Use final where possible

app/src/androidTest/java/org/schabi/newpipe/report/ErrorInfoTest.java

@@ -21,13 +21,13 @@ public class ErrorInfoTest {
 
     @Test
     public void errorInfoTestParcelable() {
-        ErrorInfo info = ErrorInfo.make(UserAction.USER_REPORT, "youtube", "request",
+        final ErrorInfo info = ErrorInfo.make(UserAction.USER_REPORT, "youtube", "request",
                 R.string.general_error);
         // Obtain a Parcel object and write the parcelable object to it:
-        Parcel parcel = Parcel.obtain();
+        final Parcel parcel = Parcel.obtain();
         info.writeToParcel(parcel, 0);
         parcel.setDataPosition(0);
-        ErrorInfo infoFromParcel = ErrorInfo.CREATOR.createFromParcel(parcel);
+        final ErrorInfo infoFromParcel = ErrorInfo.CREATOR.createFromParcel(parcel);
 
         assertEquals(UserAction.USER_REPORT, infoFromParcel.userAction);
         assertEquals("youtube", infoFromParcel.serviceName);

app/src/main/java/androidx/fragment/app/FragmentStatePagerAdapterMenuWorkaround.java

@@ -150,7 +150,7 @@ public abstract class FragmentStatePagerAdapterMenuWorkaround extends PagerAdapt
         // from its saved state, where the fragment manager has already
         // taken care of restoring the fragments we previously had instantiated.
         if (mFragments.size() > position) {
-            Fragment f = mFragments.get(position);
+            final Fragment f = mFragments.get(position);
             if (f != null) {
                 return f;
             }
@@ -160,12 +160,12 @@ public abstract class FragmentStatePagerAdapterMenuWorkaround extends PagerAdapt
             mCurTransaction = mFragmentManager.beginTransaction();
         }
 
-        Fragment fragment = getItem(position);
+        final Fragment fragment = getItem(position);
         if (DEBUG) {
             Log.v(TAG, "Adding item #" + position + ": f=" + fragment);
         }
         if (mSavedState.size() > position) {
-            Fragment.SavedState fss = mSavedState.get(position);
+            final Fragment.SavedState fss = mSavedState.get(position);
             if (fss != null) {
                 fragment.setInitialSavedState(fss);
             }
@@ -191,7 +191,7 @@ public abstract class FragmentStatePagerAdapterMenuWorkaround extends PagerAdapt
     @Override
     public void destroyItem(@NonNull final ViewGroup container, final int position,
                             @NonNull final Object object) {
-        Fragment fragment = (Fragment) object;
+        final Fragment fragment = (Fragment) object;
 
         if (mCurTransaction == null) {
             mCurTransaction = mFragmentManager.beginTransaction();
@@ -217,7 +217,7 @@ public abstract class FragmentStatePagerAdapterMenuWorkaround extends PagerAdapt
     @SuppressWarnings({"ReferenceEquality", "deprecation"})
     public void setPrimaryItem(@NonNull final ViewGroup container, final int position,
                                @NonNull final Object object) {
-        Fragment fragment = (Fragment) object;
+        final Fragment fragment = (Fragment) object;
         if (fragment != mCurrentPrimaryItem) {
             if (mCurrentPrimaryItem != null) {
                 mCurrentPrimaryItem.setMenuVisibility(false);
@@ -267,17 +267,17 @@ public abstract class FragmentStatePagerAdapterMenuWorkaround extends PagerAdapt
         Bundle state = null;
         if (mSavedState.size() > 0) {
             state = new Bundle();
-            Fragment.SavedState[] fss = new Fragment.SavedState[mSavedState.size()];
+            final Fragment.SavedState[] fss = new Fragment.SavedState[mSavedState.size()];
             mSavedState.toArray(fss);
             state.putParcelableArray("states", fss);
         }
         for (int i = 0; i < mFragments.size(); i++) {
-            Fragment f = mFragments.get(i);
+            final Fragment f = mFragments.get(i);
             if (f != null && f.isAdded()) {
                 if (state == null) {
                     state = new Bundle();
                 }
-                String key = "f" + i;
+                final String key = "f" + i;
                 mFragmentManager.putFragment(state, key, f);
 
                 //!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
@@ -294,9 +294,9 @@ public abstract class FragmentStatePagerAdapterMenuWorkaround extends PagerAdapt
     @Override
     public void restoreState(@Nullable final Parcelable state, @Nullable final ClassLoader loader) {
         if (state != null) {
-            Bundle bundle = (Bundle) state;
+            final Bundle bundle = (Bundle) state;
             bundle.setClassLoader(loader);
-            Parcelable[] fss = bundle.getParcelableArray("states");
+            final Parcelable[] fss = bundle.getParcelableArray("states");
             mSavedState.clear();
             mFragments.clear();
             if (fss != null) {
@@ -304,11 +304,11 @@ public abstract class FragmentStatePagerAdapterMenuWorkaround extends PagerAdapt
                     mSavedState.add((Fragment.SavedState) fss[i]);
                 }
             }
-            Iterable<String> keys = bundle.keySet();
+            final Iterable<String> keys = bundle.keySet();
-            for (String key: keys) {
+            for (final String key : keys) {
                 if (key.startsWith("f")) {
-                    int index = Integer.parseInt(key.substring(1));
+                    final int index = Integer.parseInt(key.substring(1));
-                    Fragment f = mFragmentManager.getFragment(bundle, key);
+                    final Fragment f = mFragmentManager.getFragment(bundle, key);
                     if (f != null) {
                         while (mFragments.size() <= index) {
                             mFragments.add(null);

app/src/main/java/com/google/android/material/appbar/FlingBehavior.java

@@ -30,19 +30,18 @@ public final class FlingBehavior extends AppBarLayout.Behavior {
     public boolean onRequestChildRectangleOnScreen(
             @NonNull final CoordinatorLayout coordinatorLayout, @NonNull final AppBarLayout child,
             @NonNull final Rect rectangle, final boolean immediate) {
-
         focusScrollRect.set(rectangle);
 
         coordinatorLayout.offsetDescendantRectToMyCoords(child, focusScrollRect);
 
-        int height = coordinatorLayout.getHeight();
+        final int height = coordinatorLayout.getHeight();
 
         if (focusScrollRect.top <= 0 && focusScrollRect.bottom >= height) {
             // the child is too big to fit inside ourselves completely, ignore request
             return false;
         }
 
-        int dy;
+        final int dy;
 
         if (focusScrollRect.bottom > height) {
             dy =  focusScrollRect.top;
@@ -54,7 +53,7 @@ public final class FlingBehavior extends AppBarLayout.Behavior {
             return false;
         }
 
-        int consumed = scroll(coordinatorLayout, child, dy, getMaxDragOffset(child), 0);
+        final int consumed = scroll(coordinatorLayout, child, dy, getMaxDragOffset(child), 0);
 
         return consumed == dy;
     }
@@ -106,14 +105,14 @@ public final class FlingBehavior extends AppBarLayout.Behavior {
     @Nullable
     private OverScroller getScrollerField() {
         try {
-            Class<?> headerBehaviorType = this.getClass()
+            final Class<?> headerBehaviorType = this.getClass()
                     .getSuperclass().getSuperclass().getSuperclass();
             if (headerBehaviorType != null) {
-                Field field = headerBehaviorType.getDeclaredField("scroller");
+                final Field field = headerBehaviorType.getDeclaredField("scroller");
                 field.setAccessible(true);
                 return ((OverScroller) field.get(this));
             }
-        } catch (NoSuchFieldException | IllegalAccessException e) {
+        } catch (final NoSuchFieldException | IllegalAccessException e) {
             // ?
         }
         return null;
@@ -122,34 +121,35 @@ public final class FlingBehavior extends AppBarLayout.Behavior {
     @Nullable
     private Field getLastNestedScrollingChildRefField() {
         try {
-            Class<?> headerBehaviorType = this.getClass().getSuperclass().getSuperclass();
+            final Class<?> headerBehaviorType = this.getClass().getSuperclass().getSuperclass();
             if (headerBehaviorType != null) {
-                Field field = headerBehaviorType.getDeclaredField("lastNestedScrollingChildRef");
+                final Field field
+                        = headerBehaviorType.getDeclaredField("lastNestedScrollingChildRef");
                 field.setAccessible(true);
                 return field;
             }
-        } catch (NoSuchFieldException e) {
+        } catch (final NoSuchFieldException e) {
             // ?
         }
         return null;
     }
 
     private void resetNestedScrollingChild() {
-        Field field = getLastNestedScrollingChildRefField();
+        final Field field = getLastNestedScrollingChildRefField();
         if (field != null) {
             try {
-                Object value = field.get(this);
+                final Object value = field.get(this);
                 if (value != null) {
                     field.set(this, null);
                 }
-            } catch (IllegalAccessException e) {
+            } catch (final IllegalAccessException e) {
                 // ?
             }
         }
     }
 
     private void stopAppBarLayoutFling() {
-        OverScroller scroller = getScrollerField();
+        final OverScroller scroller = getScrollerField();
         if (scroller != null) {
             scroller.forceFinished(true);
         }

app/src/main/java/org/schabi/newpipe/App.java

@@ -104,7 +104,7 @@ public class App extends Application {
     }
 
     protected Downloader getDownloader() {
-        DownloaderImpl downloader = DownloaderImpl.init(null);
+        final DownloaderImpl downloader = DownloaderImpl.init(null);
         setCookiesToDownloader(downloader);
         return downloader;
     }
@@ -208,7 +208,7 @@ public class App extends Application {
                     .setBuildConfigClass(BuildConfig.class)
                     .build();
             ACRA.init(this, acraConfig);
-        } catch (ACRAConfigurationException ace) {
+        } catch (final ACRAConfigurationException ace) {
             ace.printStackTrace();
             ErrorActivity.reportError(this,
                     ace,
@@ -231,10 +231,10 @@ public class App extends Application {
         // Keep this below DEFAULT to avoid making noise on every notification update
         final int importance = NotificationManager.IMPORTANCE_LOW;
 
-        NotificationChannel mChannel = new NotificationChannel(id, name, importance);
+        final NotificationChannel mChannel = new NotificationChannel(id, name, importance);
         mChannel.setDescription(description);
 
-        NotificationManager mNotificationManager =
+        final NotificationManager mNotificationManager =
                 (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
         mNotificationManager.createNotificationChannel(mChannel);
 
@@ -255,11 +255,11 @@ public class App extends Application {
         final String appUpdateDescription
                 = getString(R.string.app_update_notification_channel_description);
 
-        NotificationChannel appUpdateChannel
+        final NotificationChannel appUpdateChannel
                 = new NotificationChannel(appUpdateId, appUpdateName, importance);
         appUpdateChannel.setDescription(appUpdateDescription);
 
-        NotificationManager appUpdateNotificationManager
+        final NotificationManager appUpdateNotificationManager
                 = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
         appUpdateNotificationManager.createNotificationChannel(appUpdateChannel);
     }

app/src/main/java/org/schabi/newpipe/CheckForNewAppVersionTask.java

@@ -62,7 +62,7 @@ public class CheckForNewAppVersionTask extends AsyncTask<Void, Void, String> {
 
         try {
             packageInfo = pm.getPackageInfo(packageName, flags);
-        } catch (PackageManager.NameNotFoundException e) {
+        } catch (final PackageManager.NameNotFoundException e) {
             ErrorActivity.reportError(APP, e, null, null,
                     ErrorActivity.ErrorInfo.make(UserAction.SOMETHING_ELSE, "none",
                             "Could not find package info", R.string.app_ui_crash));
@@ -77,7 +77,7 @@ public class CheckForNewAppVersionTask extends AsyncTask<Void, Void, String> {
         try {
             final CertificateFactory cf = CertificateFactory.getInstance("X509");
             c = (X509Certificate) cf.generateCertificate(input);
-        } catch (CertificateException e) {
+        } catch (final CertificateException e) {
             ErrorActivity.reportError(APP, e, null, null,
                     ErrorActivity.ErrorInfo.make(UserAction.SOMETHING_ELSE, "none",
                             "Certificate error", R.string.app_ui_crash));
@@ -86,7 +86,7 @@ public class CheckForNewAppVersionTask extends AsyncTask<Void, Void, String> {
         String hexString = null;
 
         try {
-            MessageDigest md = MessageDigest.getInstance("SHA1");
+            final MessageDigest md = MessageDigest.getInstance("SHA1");
             final byte[] publicKey = md.digest(c.getEncoded());
             hexString = byte2HexFormatted(publicKey);
         } catch (NoSuchAlgorithmException | CertificateEncodingException e) {
@@ -167,7 +167,7 @@ public class CheckForNewAppVersionTask extends AsyncTask<Void, Void, String> {
 
                 compareAppVersionAndShowNotification(versionName, apkLocationUrl, versionCode);
 
-            } catch (JsonParserException e) {
+            } catch (final JsonParserException e) {
                 // connectivity problems, do not alarm user and fail silently
                 if (DEBUG) {
                     Log.w(TAG, Log.getStackTraceString(e));
@@ -187,7 +187,7 @@ public class CheckForNewAppVersionTask extends AsyncTask<Void, Void, String> {
     private void compareAppVersionAndShowNotification(final String versionName,
                                                       final String apkLocationUrl,
                                                       final int versionCode) {
-        int notificationId = 2000;
+        final int notificationId = 2000;
 
         if (BuildConfig.VERSION_CODE < versionCode) {
 

app/src/main/java/org/schabi/newpipe/DownloaderImpl.java

@@ -94,18 +94,18 @@ public final class DownloaderImpl extends Downloader {
     private static void enableModernTLS(final OkHttpClient.Builder builder) {
         try {
             // get the default TrustManager
-            TrustManagerFactory trustManagerFactory = TrustManagerFactory.getInstance(
+            final TrustManagerFactory trustManagerFactory = TrustManagerFactory.getInstance(
                     TrustManagerFactory.getDefaultAlgorithm());
             trustManagerFactory.init((KeyStore) null);
-            TrustManager[] trustManagers = trustManagerFactory.getTrustManagers();
+            final TrustManager[] trustManagers = trustManagerFactory.getTrustManagers();
             if (trustManagers.length != 1 || !(trustManagers[0] instanceof X509TrustManager)) {
                 throw new IllegalStateException("Unexpected default trust managers:"
                         + Arrays.toString(trustManagers));
             }
-            X509TrustManager trustManager = (X509TrustManager) trustManagers[0];
+            final X509TrustManager trustManager = (X509TrustManager) trustManagers[0];
 
             // insert our own TLSSocketFactory
-            SSLSocketFactory sslSocketFactory = TLSSocketFactoryCompat.getInstance();
+            final SSLSocketFactory sslSocketFactory = TLSSocketFactoryCompat.getInstance();
 
             builder.sslSocketFactory(sslSocketFactory, trustManager);
 
@@ -114,16 +114,16 @@ public final class DownloaderImpl extends Downloader {
             // Necessary because some servers (e.g. Framatube.org)
             // don't support the old cipher suites.
             // https://github.com/square/okhttp/issues/4053#issuecomment-402579554
-            List<CipherSuite> cipherSuites = new ArrayList<>();
+            final List<CipherSuite> cipherSuites = new ArrayList<>();
             cipherSuites.addAll(ConnectionSpec.MODERN_TLS.cipherSuites());
             cipherSuites.add(CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA);
             cipherSuites.add(CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA);
-            ConnectionSpec legacyTLS = new ConnectionSpec.Builder(ConnectionSpec.MODERN_TLS)
+            final ConnectionSpec legacyTLS = new ConnectionSpec.Builder(ConnectionSpec.MODERN_TLS)
                     .cipherSuites(cipherSuites.toArray(new CipherSuite[0]))
                     .build();
 
             builder.connectionSpecs(Arrays.asList(legacyTLS, ConnectionSpec.CLEARTEXT));
-        } catch (KeyManagementException | NoSuchAlgorithmException | KeyStoreException e) {
+        } catch (final KeyManagementException | NoSuchAlgorithmException | KeyStoreException e) {
             if (DEBUG) {
                 e.printStackTrace();
             }
@@ -131,15 +131,15 @@ public final class DownloaderImpl extends Downloader {
     }
 
     public String getCookies(final String url) {
-        List<String> resultCookies = new ArrayList<>();
+        final List<String> resultCookies = new ArrayList<>();
         if (url.contains(YOUTUBE_DOMAIN)) {
-            String youtubeCookie = getCookie(YOUTUBE_RESTRICTED_MODE_COOKIE_KEY);
+            final String youtubeCookie = getCookie(YOUTUBE_RESTRICTED_MODE_COOKIE_KEY);
             if (youtubeCookie != null) {
                 resultCookies.add(youtubeCookie);
             }
         }
         // Recaptcha cookie is always added TODO: not sure if this is necessary
-        String recaptchaCookie = getCookie(ReCaptchaActivity.RECAPTCHA_COOKIES_KEY);
+        final String recaptchaCookie = getCookie(ReCaptchaActivity.RECAPTCHA_COOKIES_KEY);
         if (recaptchaCookie != null) {
             resultCookies.add(recaptchaCookie);
         }
@@ -159,9 +159,9 @@ public final class DownloaderImpl extends Downloader {
     }
 
     public void updateYoutubeRestrictedModeCookies(final Context context) {
-        String restrictedModeEnabledKey =
+        final String restrictedModeEnabledKey =
                 context.getString(R.string.youtube_restricted_mode_enabled);
-        boolean restrictedModeEnabled = PreferenceManager.getDefaultSharedPreferences(context)
+        final boolean restrictedModeEnabled = PreferenceManager.getDefaultSharedPreferences(context)
                 .getBoolean(restrictedModeEnabledKey, false);
         updateYoutubeRestrictedModeCookies(restrictedModeEnabled);
     }
@@ -186,9 +186,9 @@ public final class DownloaderImpl extends Downloader {
         try {
             final Response response = head(url);
             return Long.parseLong(response.getHeader("Content-Length"));
-        } catch (NumberFormatException e) {
+        } catch (final NumberFormatException e) {
             throw new IOException("Invalid content length", e);
-        } catch (ReCaptchaException e) {
+        } catch (final ReCaptchaException e) {
             throw new IOException(e);
         }
     }
@@ -199,7 +199,7 @@ public final class DownloaderImpl extends Downloader {
                     .method("GET", null).url(siteUrl)
                     .addHeader("User-Agent", USER_AGENT);
 
-            String cookies = getCookies(siteUrl);
+            final String cookies = getCookies(siteUrl);
             if (!cookies.isEmpty()) {
                 requestBuilder.addHeader("Cookie", cookies);
             }
@@ -218,7 +218,7 @@ public final class DownloaderImpl extends Downloader {
             }
 
             return body.byteStream();
-        } catch (ReCaptchaException e) {
+        } catch (final ReCaptchaException e) {
             throw new IOException(e.getMessage(), e.getCause());
         }
     }
@@ -240,18 +240,18 @@ public final class DownloaderImpl extends Downloader {
                 .method(httpMethod, requestBody).url(url)
                 .addHeader("User-Agent", USER_AGENT);
 
-        String cookies = getCookies(url);
+        final String cookies = getCookies(url);
         if (!cookies.isEmpty()) {
             requestBuilder.addHeader("Cookie", cookies);
         }
 
-        for (Map.Entry<String, List<String>> pair : headers.entrySet()) {
+        for (final Map.Entry<String, List<String>> pair : headers.entrySet()) {
             final String headerName = pair.getKey();
             final List<String> headerValueList = pair.getValue();
 
             if (headerValueList.size() > 1) {
                 requestBuilder.removeHeader(headerName);
-                for (String headerValue : headerValueList) {
+                for (final String headerValue : headerValueList) {
                     requestBuilder.addHeader(headerName, headerValue);
                 }
             } else if (headerValueList.size() == 1) {

app/src/main/java/org/schabi/newpipe/ExitActivity.java

@@ -27,7 +27,7 @@ import android.os.Bundle;
 public class ExitActivity extends Activity {
 
     public static void exitAndRemoveFromRecentApps(final Activity activity) {
-        Intent intent = new Intent(activity, ExitActivity.class);
+        final Intent intent = new Intent(activity, ExitActivity.class);
 
         intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK
                 | Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS

app/src/main/java/org/schabi/newpipe/MainActivity.java

@@ -140,7 +140,7 @@ public class MainActivity extends AppCompatActivity {
         setSupportActionBar(findViewById(R.id.toolbar));
         try {
             setupDrawer();
-        } catch (Exception e) {
+        } catch (final Exception e) {
             ErrorActivity.reportUiError(this, e);
         }
 
@@ -155,8 +155,8 @@ public class MainActivity extends AppCompatActivity {
         drawerItems = findViewById(R.id.navigation);
 
         //Tabs
-        int currentServiceId = ServiceHelper.getSelectedServiceId(this);
+        final int currentServiceId = ServiceHelper.getSelectedServiceId(this);
-        StreamingService service = NewPipe.getService(currentServiceId);
+        final StreamingService service = NewPipe.getService(currentServiceId);
 
         int kioskId = 0;
 
@@ -228,7 +228,7 @@ public class MainActivity extends AppCompatActivity {
             case R.id.menu_tabs_group:
                 try {
                     tabSelected(item);
-                } catch (Exception e) {
+                } catch (final Exception e) {
                     ErrorActivity.reportUiError(this, e);
                 }
                 break;
@@ -269,8 +269,8 @@ public class MainActivity extends AppCompatActivity {
                 NavigationHelper.openStatisticFragment(getSupportFragmentManager());
                 break;
             default:
-                int currentServiceId = ServiceHelper.getSelectedServiceId(this);
+                final int currentServiceId = ServiceHelper.getSelectedServiceId(this);
-                StreamingService service = NewPipe.getService(currentServiceId);
+                final StreamingService service = NewPipe.getService(currentServiceId);
                 String serviceName = "";
 
                 int kioskId = 0;
@@ -299,8 +299,8 @@ public class MainActivity extends AppCompatActivity {
     }
 
     private void setupDrawerHeader() {
-        NavigationView navigationView = findViewById(R.id.navigation);
+        final NavigationView navigationView = findViewById(R.id.navigation);
-        View hView = navigationView.getHeaderView(0);
+        final View hView = navigationView.getHeaderView(0);
 
         serviceArrow = hView.findViewById(R.id.drawer_arrow);
         headerServiceIcon = hView.findViewById(R.id.drawer_header_service_icon);
@@ -335,7 +335,7 @@ public class MainActivity extends AppCompatActivity {
         } else {
             try {
                 showTabs();
-            } catch (Exception e) {
+            } catch (final Exception e) {
                 ErrorActivity.reportUiError(this, e);
             }
         }
@@ -344,11 +344,11 @@ public class MainActivity extends AppCompatActivity {
     private void showServices() {
         serviceArrow.setImageResource(R.drawable.ic_arrow_drop_up_white_24dp);
 
-        for (StreamingService s : NewPipe.getServices()) {
+        for (final StreamingService s : NewPipe.getServices()) {
             final String title = s.getServiceInfo().getName()
                     + (ServiceHelper.isBeta(s) ? " (beta)" : "");
 
-            MenuItem menuItem = drawerItems.getMenu()
+            final MenuItem menuItem = drawerItems.getMenu()
                     .add(R.id.menu_services_group, s.getServiceId(), ORDER, title)
                     .setIcon(ServiceHelper.getIcon(s.getServiceId()));
 
@@ -362,20 +362,20 @@ public class MainActivity extends AppCompatActivity {
     }
 
     private void enhancePeertubeMenu(final StreamingService s, final MenuItem menuItem) {
-        PeertubeInstance currentInstace = PeertubeHelper.getCurrentInstance();
+        final PeertubeInstance currentInstace = PeertubeHelper.getCurrentInstance();
         menuItem.setTitle(currentInstace.getName() + (ServiceHelper.isBeta(s) ? " (beta)" : ""));
-        Spinner spinner = (Spinner) LayoutInflater.from(this)
+        final Spinner spinner = (Spinner) LayoutInflater.from(this)
                 .inflate(R.layout.instance_spinner_layout, null);
-        List<PeertubeInstance> instances = PeertubeHelper.getInstanceList(this);
+        final List<PeertubeInstance> instances = PeertubeHelper.getInstanceList(this);
-        List<String> items = new ArrayList<>();
+        final List<String> items = new ArrayList<>();
         int defaultSelect = 0;
-        for (PeertubeInstance instance : instances) {
+        for (final PeertubeInstance instance : instances) {
             items.add(instance.getName());
             if (instance.getUrl().equals(currentInstace.getUrl())) {
                 defaultSelect = items.size() - 1;
             }
         }
-        ArrayAdapter<String> adapter = new ArrayAdapter<>(this,
+        final ArrayAdapter<String> adapter = new ArrayAdapter<>(this,
                 R.layout.instance_spinner_item, items);
         adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
         spinner.setAdapter(adapter);
@@ -384,7 +384,7 @@ public class MainActivity extends AppCompatActivity {
             @Override
             public void onItemSelected(final AdapterView<?> parent, final View view,
                                        final int position, final long id) {
-                PeertubeInstance newInstance = instances.get(position);
+                final PeertubeInstance newInstance = instances.get(position);
                 if (newInstance.getUrl().equals(PeertubeHelper.getCurrentInstance().getUrl())) {
                     return;
                 }
@@ -410,8 +410,8 @@ public class MainActivity extends AppCompatActivity {
         serviceArrow.setImageResource(R.drawable.ic_arrow_drop_down_white_24dp);
 
         //Tabs
-        int currentServiceId = ServiceHelper.getSelectedServiceId(this);
+        final int currentServiceId = ServiceHelper.getSelectedServiceId(this);
-        StreamingService service = NewPipe.getService(currentServiceId);
+        final StreamingService service = NewPipe.getService(currentServiceId);
 
         int kioskId = 0;
 
@@ -476,11 +476,12 @@ public class MainActivity extends AppCompatActivity {
             headerServiceView.post(() -> headerServiceView.setSelected(true));
             toggleServiceButton.setContentDescription(
                     getString(R.string.drawer_header_description) + selectedServiceName);
-        } catch (Exception e) {
+        } catch (final Exception e) {
             ErrorActivity.reportUiError(this, e);
         }
 
-        SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
+        final SharedPreferences sharedPreferences
+                = PreferenceManager.getDefaultSharedPreferences(this);
         if (sharedPreferences.getBoolean(Constants.KEY_THEME_CHANGE, false)) {
             if (DEBUG) {
                 Log.d(TAG, "Theme has changed, recreating activity...");
@@ -513,7 +514,7 @@ public class MainActivity extends AppCompatActivity {
         if (intent != null) {
             // Return if launched from a launcher (e.g. Nova Launcher, Pixel Launcher ...)
             // to not destroy the already created backstack
-            String action = intent.getAction();
+            final String action = intent.getAction();
             if ((action != null && action.equals(Intent.ACTION_MAIN))
                     && intent.hasCategory(Intent.CATEGORY_LAUNCHER)) {
                 return;
@@ -546,7 +547,7 @@ public class MainActivity extends AppCompatActivity {
         }
 
         if (DeviceUtils.isTv(this)) {
-            View drawerPanel = findViewById(R.id.navigation);
+            final View drawerPanel = findViewById(R.id.navigation);
             if (drawer.isDrawerOpen(drawerPanel)) {
                 drawer.closeDrawers();
                 return;
@@ -594,7 +595,7 @@ public class MainActivity extends AppCompatActivity {
     public void onRequestPermissionsResult(final int requestCode,
                                            @NonNull final String[] permissions,
                                            @NonNull final int[] grantResults) {
-        for (int i : grantResults) {
+        for (final int i : grantResults) {
             if (i == PackageManager.PERMISSION_DENIED) {
                 return;
             }
@@ -604,7 +605,7 @@ public class MainActivity extends AppCompatActivity {
                 NavigationHelper.openDownloads(this);
                 break;
             case PermissionHelper.DOWNLOAD_DIALOG_REQUEST_CODE:
-                Fragment fragment = getSupportFragmentManager()
+                final Fragment fragment = getSupportFragmentManager()
                         .findFragmentById(R.id.fragment_player_holder);
                 if (fragment instanceof VideoDetailFragment) {
                     ((VideoDetailFragment) fragment).openDownloadDialog();
@@ -656,13 +657,14 @@ public class MainActivity extends AppCompatActivity {
         }
         super.onCreateOptionsMenu(menu);
 
-        Fragment fragment = getSupportFragmentManager().findFragmentById(R.id.fragment_holder);
+        final Fragment fragment
+                = getSupportFragmentManager().findFragmentById(R.id.fragment_holder);
         if (!(fragment instanceof SearchFragment)) {
             findViewById(R.id.toolbar).findViewById(R.id.toolbar_search_container)
                     .setVisibility(View.GONE);
         }
 
-        ActionBar actionBar = getSupportActionBar();
+        final ActionBar actionBar = getSupportActionBar();
         if (actionBar != null) {
             actionBar.setDisplayHomeAsUpEnabled(false);
         }
@@ -677,7 +679,7 @@ public class MainActivity extends AppCompatActivity {
         if (DEBUG) {
             Log.d(TAG, "onOptionsItemSelected() called with: item = [" + item + "]");
         }
-        int id = item.getItemId();
+        final int id = item.getItemId();
 
         switch (id) {
             case android.R.id.home:
@@ -745,13 +747,13 @@ public class MainActivity extends AppCompatActivity {
             }
 
             if (intent.hasExtra(Constants.KEY_LINK_TYPE)) {
-                String url = intent.getStringExtra(Constants.KEY_URL);
+                final String url = intent.getStringExtra(Constants.KEY_URL);
-                int serviceId = intent.getIntExtra(Constants.KEY_SERVICE_ID, 0);
+                final int serviceId = intent.getIntExtra(Constants.KEY_SERVICE_ID, 0);
-                String title = intent.getStringExtra(Constants.KEY_TITLE);
+                final String title = intent.getStringExtra(Constants.KEY_TITLE);
                 switch (((StreamingService.LinkType) intent
                         .getSerializableExtra(Constants.KEY_LINK_TYPE))) {
                     case STREAM:
-                        boolean autoPlay = intent
+                        final boolean autoPlay = intent
                                 .getBooleanExtra(VideoDetailFragment.AUTO_PLAY, false);
                         final String intentCacheKey = intent
                                 .getStringExtra(VideoPlayer.PLAY_QUEUE_KEY);
@@ -780,7 +782,7 @@ public class MainActivity extends AppCompatActivity {
                 if (searchString == null) {
                     searchString = "";
                 }
-                int serviceId = intent.getIntExtra(Constants.KEY_SERVICE_ID, 0);
+                final int serviceId = intent.getIntExtra(Constants.KEY_SERVICE_ID, 0);
                 NavigationHelper.openSearchFragment(
                         getSupportFragmentManager(),
                         serviceId,
@@ -789,7 +791,7 @@ public class MainActivity extends AppCompatActivity {
             } else {
                 NavigationHelper.gotoMainFragment(getSupportFragmentManager());
             }
-        } catch (Exception e) {
+        } catch (final Exception e) {
             ErrorActivity.reportUiError(this, e);
         }
     }

app/src/main/java/org/schabi/newpipe/NewPipeDatabase.java

@@ -46,7 +46,7 @@ public final class NewPipeDatabase {
         if (databaseInstance == null) {
             throw new IllegalStateException("database is not initialized");
         }
-        Cursor c = databaseInstance.query("pragma wal_checkpoint(full)", null);
+        final Cursor c = databaseInstance.query("pragma wal_checkpoint(full)", null);
         if (c.moveToFirst() && c.getInt(0) == 1) {
             throw new RuntimeException("Checkpoint was blocked from completing");
         }

app/src/main/java/org/schabi/newpipe/PanicResponderActivity.java

@@ -31,7 +31,7 @@ public class PanicResponderActivity extends Activity {
     @Override
     protected void onCreate(final Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
-        Intent intent = getIntent();
+        final Intent intent = getIntent();
         if (intent != null && PANIC_TRIGGER_ACTION.equals(intent.getAction())) {
             // TODO: Explicitly clear the search results
             //  once they are restored when the app restarts

app/src/main/java/org/schabi/newpipe/ReCaptchaActivity.java

@@ -61,7 +61,7 @@ public class ReCaptchaActivity extends AppCompatActivity {
         ThemeHelper.setTheme(this);
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_recaptcha);
-        Toolbar toolbar = findViewById(R.id.toolbar);
+        final Toolbar toolbar = findViewById(R.id.toolbar);
         setSupportActionBar(toolbar);
 
         String url = getIntent().getStringExtra(RECAPTCHA_URL_EXTRA);
@@ -76,7 +76,7 @@ public class ReCaptchaActivity extends AppCompatActivity {
         webView = findViewById(R.id.reCaptchaWebView);
 
         // enable Javascript
-        WebSettings webSettings = webView.getSettings();
+        final WebSettings webSettings = webView.getSettings();
         webSettings.setJavaScriptEnabled(true);
 
         webView.setWebViewClient(new WebViewClient() {
@@ -84,7 +84,7 @@ public class ReCaptchaActivity extends AppCompatActivity {
             @Override
             public boolean shouldOverrideUrlLoading(final WebView view,
                                                     final WebResourceRequest request) {
-                String url = request.getUrl().toString();
+                final String url = request.getUrl().toString();
                 if (MainActivity.DEBUG) {
                     Log.d(TAG, "shouldOverrideUrlLoading: request.url=" + url);
                 }
@@ -113,7 +113,7 @@ public class ReCaptchaActivity extends AppCompatActivity {
         // cleaning cache, history and cookies from webView
         webView.clearCache(true);
         webView.clearHistory();
-        android.webkit.CookieManager cookieManager = CookieManager.getInstance();
+        final android.webkit.CookieManager cookieManager = CookieManager.getInstance();
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
             cookieManager.removeAllCookies(aBoolean -> {
             });
@@ -128,7 +128,7 @@ public class ReCaptchaActivity extends AppCompatActivity {
     public boolean onCreateOptionsMenu(final Menu menu) {
         getMenuInflater().inflate(R.menu.menu_recaptcha, menu);
 
-        ActionBar actionBar = getSupportActionBar();
+        final ActionBar actionBar = getSupportActionBar();
         if (actionBar != null) {
             actionBar.setDisplayHomeAsUpEnabled(false);
             actionBar.setTitle(R.string.title_activity_recaptcha);
@@ -145,7 +145,7 @@ public class ReCaptchaActivity extends AppCompatActivity {
 
     @Override
     public boolean onOptionsItemSelected(final MenuItem item) {
-        int id = item.getItemId();
+        final int id = item.getItemId();
         switch (id) {
             case R.id.menu_item_done:
                 saveCookiesAndFinish();
@@ -173,7 +173,7 @@ public class ReCaptchaActivity extends AppCompatActivity {
             setResult(RESULT_OK);
         }
 
-        Intent intent = new Intent(this, org.schabi.newpipe.MainActivity.class);
+        final Intent intent = new Intent(this, org.schabi.newpipe.MainActivity.class);
         intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
         NavUtils.navigateUpTo(this, intent);
     }
@@ -188,13 +188,13 @@ public class ReCaptchaActivity extends AppCompatActivity {
             return;
         }
 
-        String cookies = CookieManager.getInstance().getCookie(url);
+        final String cookies = CookieManager.getInstance().getCookie(url);
         handleCookies(cookies);
 
         // sometimes cookies are inside the url
-        int abuseStart = url.indexOf("google_abuse=");
+        final int abuseStart = url.indexOf("google_abuse=");
         if (abuseStart != -1) {
-            int abuseEnd = url.indexOf("+path");
+            final int abuseEnd = url.indexOf("+path");
 
             try {
                 String abuseCookie = url.substring(abuseStart + 13, abuseEnd);

app/src/main/java/org/schabi/newpipe/RouterActivity.java

@@ -310,7 +310,7 @@ public class RouterActivity extends AppCompatActivity {
         };
 
         int id = 12345;
-        for (AdapterChoiceItem item : choices) {
+        for (final AdapterChoiceItem item : choices) {
             final RadioButton radioButton
                     = (RadioButton) inflater.inflate(R.layout.list_radio_icon_item, null);
             radioButton.setText(item.description);
@@ -330,7 +330,7 @@ public class RouterActivity extends AppCompatActivity {
                     getString(R.string.preferred_open_action_last_selected_key), null);
             if (!TextUtils.isEmpty(lastSelectedPlayer)) {
                 for (int i = 0; i < choices.size(); i++) {
-                    AdapterChoiceItem c = choices.get(i);
+                    final AdapterChoiceItem c = choices.get(i);
                     if (lastSelectedPlayer.equals(c.key)) {
                         selectedRadioPosition = i;
                         break;
@@ -362,9 +362,9 @@ public class RouterActivity extends AppCompatActivity {
 
         final SharedPreferences preferences = PreferenceManager
                 .getDefaultSharedPreferences(this);
-        boolean isExtVideoEnabled = preferences.getBoolean(
+        final boolean isExtVideoEnabled = preferences.getBoolean(
                 getString(R.string.use_external_video_player_key), false);
-        boolean isExtAudioEnabled = preferences.getBoolean(
+        final boolean isExtAudioEnabled = preferences.getBoolean(
                 getString(R.string.use_external_audio_player_key), false);
 
         returnList.add(new AdapterChoiceItem(getString(R.string.show_info_key),
@@ -410,9 +410,9 @@ public class RouterActivity extends AppCompatActivity {
     }
 
     private void handleText() {
-        String searchString = getIntent().getStringExtra(Intent.EXTRA_TEXT);
+        final String searchString = getIntent().getStringExtra(Intent.EXTRA_TEXT);
-        int serviceId = getIntent().getIntExtra(Constants.KEY_SERVICE_ID, 0);
+        final int serviceId = getIntent().getIntExtra(Constants.KEY_SERVICE_ID, 0);
-        Intent intent = new Intent(getThemeWrapperContext(), MainActivity.class);
+        final Intent intent = new Intent(getThemeWrapperContext(), MainActivity.class);
         intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
         startActivity(intent);
         NavigationHelper.openSearch(getThemeWrapperContext(), serviceId, searchString);
@@ -479,14 +479,14 @@ public class RouterActivity extends AppCompatActivity {
                 .subscribeOn(Schedulers.io())
                 .observeOn(AndroidSchedulers.mainThread())
                 .subscribe((@NonNull StreamInfo result) -> {
-                    List<VideoStream> sortedVideoStreams = ListHelper
+                    final List<VideoStream> sortedVideoStreams = ListHelper
                             .getSortedStreamVideosList(this, result.getVideoStreams(),
                                     result.getVideoOnlyStreams(), false);
-                    int selectedVideoStreamIndex = ListHelper
+                    final int selectedVideoStreamIndex = ListHelper
                             .getDefaultResolutionIndex(this, sortedVideoStreams);
 
-                    FragmentManager fm = getSupportFragmentManager();
+                    final FragmentManager fm = getSupportFragmentManager();
-                    DownloadDialog downloadDialog = DownloadDialog.newInstance(result);
+                    final DownloadDialog downloadDialog = DownloadDialog.newInstance(result);
                     downloadDialog.setVideoStreams(sortedVideoStreams);
                     downloadDialog.setAudioStreams(result.getAudioStreams());
                     downloadDialog.setSelectedVideoStream(selectedVideoStreamIndex);
@@ -504,7 +504,7 @@ public class RouterActivity extends AppCompatActivity {
     public void onRequestPermissionsResult(final int requestCode,
                                            @NonNull final String[] permissions,
                                            @NonNull final int[] grantResults) {
-        for (int i : grantResults) {
+        for (final int i : grantResults) {
             if (i == PackageManager.PERMISSION_DENIED) {
                 finish();
                 return;
@@ -634,7 +634,7 @@ public class RouterActivity extends AppCompatActivity {
             if (!(serializable instanceof Choice)) {
                 return;
             }
-            Choice playerChoice = (Choice) serializable;
+            final Choice playerChoice = (Choice) serializable;
             handleChoice(playerChoice);
         }
 
@@ -682,13 +682,13 @@ public class RouterActivity extends AppCompatActivity {
 
                 final SharedPreferences preferences = PreferenceManager
                         .getDefaultSharedPreferences(this);
-                boolean isExtVideoEnabled = preferences.getBoolean(
+                final boolean isExtVideoEnabled = preferences.getBoolean(
                         getString(R.string.use_external_video_player_key), false);
-                boolean isExtAudioEnabled = preferences.getBoolean(
+                final boolean isExtAudioEnabled = preferences.getBoolean(
                         getString(R.string.use_external_audio_player_key), false);
 
                 PlayQueue playQueue;
-                String playerChoice = choice.playerChoice;
+                final String playerChoice = choice.playerChoice;
 
                 if (info instanceof StreamInfo) {
                     if (playerChoice.equals(backgroundPlayerKey) && isExtAudioEnabled) {

app/src/main/java/org/schabi/newpipe/about/AboutActivity.java

@@ -88,7 +88,7 @@ public class AboutActivity extends AppCompatActivity {
 
         setContentView(R.layout.activity_about);
 
-        Toolbar toolbar = findViewById(R.id.toolbar);
+        final Toolbar toolbar = findViewById(R.id.toolbar);
         setSupportActionBar(toolbar);
         getSupportActionBar().setDisplayHomeAsUpEnabled(true);
         // Create the adapter that will return a fragment for each of the three
@@ -99,13 +99,13 @@ public class AboutActivity extends AppCompatActivity {
         mViewPager = findViewById(R.id.container);
         mViewPager.setAdapter(mSectionsPagerAdapter);
 
-        TabLayout tabLayout = findViewById(R.id.tabs);
+        final TabLayout tabLayout = findViewById(R.id.tabs);
         tabLayout.setupWithViewPager(mViewPager);
     }
 
     @Override
     public boolean onOptionsItemSelected(final MenuItem item) {
-        int id = item.getItemId();
+        final int id = item.getItemId();
 
         switch (id) {
             case android.R.id.home:
@@ -134,25 +134,25 @@ public class AboutActivity extends AppCompatActivity {
         @Override
         public View onCreateView(final LayoutInflater inflater, final ViewGroup container,
                                  final Bundle savedInstanceState) {
-            View rootView = inflater.inflate(R.layout.fragment_about, container, false);
+            final View rootView = inflater.inflate(R.layout.fragment_about, container, false);
-            Context context = this.getContext();
+            final Context context = this.getContext();
 
-            TextView version = rootView.findViewById(R.id.app_version);
+            final TextView version = rootView.findViewById(R.id.app_version);
             version.setText(BuildConfig.VERSION_NAME);
 
-            View githubLink = rootView.findViewById(R.id.github_link);
+            final View githubLink = rootView.findViewById(R.id.github_link);
             githubLink.setOnClickListener(nv ->
                     openUrlInBrowser(context, context.getString(R.string.github_url)));
 
-            View donationLink = rootView.findViewById(R.id.donation_link);
+            final View donationLink = rootView.findViewById(R.id.donation_link);
             donationLink.setOnClickListener(v ->
                     openUrlInBrowser(context, context.getString(R.string.donation_url)));
 
-            View websiteLink = rootView.findViewById(R.id.website_link);
+            final View websiteLink = rootView.findViewById(R.id.website_link);
             websiteLink.setOnClickListener(nv ->
                     openUrlInBrowser(context, context.getString(R.string.website_url)));
 
-            View privacyPolicyLink = rootView.findViewById(R.id.privacy_policy_link);
+            final View privacyPolicyLink = rootView.findViewById(R.id.privacy_policy_link);
             privacyPolicyLink.setOnClickListener(v ->
                     openUrlInBrowser(context, context.getString(R.string.privacy_policy_url)));
 

app/src/main/java/org/schabi/newpipe/about/LicenseFragment.java

@@ -31,8 +31,8 @@ public class LicenseFragment extends Fragment {
         if (softwareComponents == null) {
             throw new NullPointerException("softwareComponents is null");
         }
-        LicenseFragment fragment = new LicenseFragment();
+        final LicenseFragment fragment = new LicenseFragment();
-        Bundle bundle = new Bundle();
+        final Bundle bundle = new Bundle();
         bundle.putParcelableArray(ARG_COMPONENTS, softwareComponents);
         fragment.setArguments(bundle);
         return fragment;

app/src/main/java/org/schabi/newpipe/about/LicenseFragmentHelper.java

@@ -51,7 +51,7 @@ public class LicenseFragmentHelper extends AsyncTask<Object, Void, Integer> {
             // split the HTML file and insert the stylesheet into the HEAD of the file
             webViewData = licenseContent.toString().replace("</head>",
                     "<style>" + getLicenseStylesheet(context) + "</style></head>");
-        } catch (IOException e) {
+        } catch (final IOException e) {
             throw new IllegalArgumentException(
                     "Could not get license file: " + license.getFilename(), e);
         }

app/src/main/java/org/schabi/newpipe/database/Converters.java

@@ -49,7 +49,7 @@ public final class Converters {
 
     @TypeConverter
     public static FeedGroupIcon feedGroupIconOf(final Integer id) {
-        for (FeedGroupIcon icon : FeedGroupIcon.values()) {
+        for (final FeedGroupIcon icon : FeedGroupIcon.values()) {
             if (icon.getId() == id) {
                 return icon;
             }

app/src/main/java/org/schabi/newpipe/database/subscription/SubscriptionEntity.java

@@ -50,7 +50,7 @@ public class SubscriptionEntity {
 
     @Ignore
     public static SubscriptionEntity from(@NonNull final ChannelInfo info) {
-        SubscriptionEntity result = new SubscriptionEntity();
+        final SubscriptionEntity result = new SubscriptionEntity();
         result.setServiceId(info.getServiceId());
         result.setUrl(info.getUrl());
         result.setData(info.getName(), info.getAvatarUrl(), info.getDescription(),
@@ -124,7 +124,7 @@ public class SubscriptionEntity {
 
     @Ignore
     public ChannelInfoItem toChannelInfoItem() {
-        ChannelInfoItem item = new ChannelInfoItem(getServiceId(), getUrl(), getName());
+        final ChannelInfoItem item = new ChannelInfoItem(getServiceId(), getUrl(), getName());
         item.setThumbnailUrl(getAvatarUrl());
         item.setSubscriberCount(getSubscriberCount());
         item.setDescription(getDescription());

app/src/main/java/org/schabi/newpipe/download/DownloadActivity.java

@@ -29,7 +29,7 @@ public class DownloadActivity extends AppCompatActivity {
     @Override
     protected void onCreate(final Bundle savedInstanceState) {
         // Service
-        Intent i = new Intent();
+        final Intent i = new Intent();
         i.setClass(this, DownloadManagerService.class);
         startService(i);
 
@@ -38,10 +38,10 @@ public class DownloadActivity extends AppCompatActivity {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_downloader);
 
-        Toolbar toolbar = findViewById(R.id.toolbar);
+        final Toolbar toolbar = findViewById(R.id.toolbar);
         setSupportActionBar(toolbar);
 
-        ActionBar actionBar = getSupportActionBar();
+        final ActionBar actionBar = getSupportActionBar();
         if (actionBar != null) {
             actionBar.setDisplayHomeAsUpEnabled(true);
             actionBar.setTitle(R.string.downloads_title);
@@ -63,7 +63,7 @@ public class DownloadActivity extends AppCompatActivity {
     }
 
     private void updateFragments() {
-        MissionsFragment fragment = new MissionsFragment();
+        final MissionsFragment fragment = new MissionsFragment();
 
         getSupportFragmentManager().beginTransaction()
                 .replace(R.id.frame, fragment, MISSIONS_FRAGMENT_TAG)
@@ -74,7 +74,7 @@ public class DownloadActivity extends AppCompatActivity {
     @Override
     public boolean onCreateOptionsMenu(final Menu menu) {
         super.onCreateOptionsMenu(menu);
-        MenuInflater inflater = getMenuInflater();
+        final MenuInflater inflater = getMenuInflater();
 
         inflater.inflate(R.menu.download_menu, menu);
 

app/src/main/java/org/schabi/newpipe/download/DownloadDialog.java

@@ -124,7 +124,7 @@ public class DownloadDialog extends DialogFragment
     private SharedPreferences prefs;
 
     public static DownloadDialog newInstance(final StreamInfo info) {
-        DownloadDialog dialog = new DownloadDialog();
+        final DownloadDialog dialog = new DownloadDialog();
         dialog.setInfo(info);
         return dialog;
     }
@@ -208,14 +208,15 @@ public class DownloadDialog extends DialogFragment
         setStyle(STYLE_NO_TITLE, ThemeHelper.getDialogTheme(context));
         Icepick.restoreInstanceState(this, savedInstanceState);
 
-        SparseArray<SecondaryStreamHelper<AudioStream>> secondaryStreams = new SparseArray<>(4);
+        final SparseArray<SecondaryStreamHelper<AudioStream>> secondaryStreams
-        List<VideoStream> videoStreams = wrappedVideoStreams.getStreamsList();
+                = new SparseArray<>(4);
+        final List<VideoStream> videoStreams = wrappedVideoStreams.getStreamsList();
 
         for (int i = 0; i < videoStreams.size(); i++) {
             if (!videoStreams.get(i).isVideoOnly()) {
                 continue;
             }
-            AudioStream audioStream = SecondaryStreamHelper
+            final AudioStream audioStream = SecondaryStreamHelper
                     .getAudioStreamFor(wrappedAudioStreams.getStreamsList(), videoStreams.get(i));
 
             if (audioStream != null) {
@@ -232,13 +233,13 @@ public class DownloadDialog extends DialogFragment
         this.audioStreamsAdapter = new StreamItemAdapter<>(context, wrappedAudioStreams);
         this.subtitleStreamsAdapter = new StreamItemAdapter<>(context, wrappedSubtitleStreams);
 
-        Intent intent = new Intent(context, DownloadManagerService.class);
+        final Intent intent = new Intent(context, DownloadManagerService.class);
         context.startService(intent);
 
         context.bindService(intent, new ServiceConnection() {
             @Override
             public void onServiceConnected(final ComponentName cname, final IBinder service) {
-                DownloadManagerBinder mgr = (DownloadManagerBinder) service;
+                final DownloadManagerBinder mgr = (DownloadManagerBinder) service;
 
                 mainStorageAudio = mgr.getMainStorageAudio();
                 mainStorageVideo = mgr.getMainStorageVideo();
@@ -296,7 +297,7 @@ public class DownloadDialog extends DialogFragment
 
         prefs = PreferenceManager.getDefaultSharedPreferences(getContext());
 
-        int threads = prefs.getInt(getString(R.string.default_download_threads), 3);
+        final int threads = prefs.getInt(getString(R.string.default_download_threads), 3);
         threadsCountTextView.setText(String.valueOf(threads));
         threadsSeekBar.setProgress(threads - 1);
         threadsSeekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
@@ -373,13 +374,13 @@ public class DownloadDialog extends DialogFragment
             }
 
             if (FilePickerActivityHelper.isOwnFileUri(context, data.getData())) {
-                File file = Utils.getFileForUri(data.getData());
+                final File file = Utils.getFileForUri(data.getData());
                 checkSelectedDownload(null, Uri.fromFile(file), file.getName(),
                         StoredFileHelper.DEFAULT_MIME);
                 return;
             }
 
-            DocumentFile docFile = DocumentFile.fromSingleUri(context, data.getData());
+            final DocumentFile docFile = DocumentFile.fromSingleUri(context, data.getData());
             if (docFile == null) {
                 showFailedDialog(R.string.general_error);
                 return;
@@ -564,7 +565,7 @@ public class DownloadDialog extends DialogFragment
     }
 
     private String getNameEditText() {
-        String str = nameEditText.getText().toString().trim();
+        final String str = nameEditText.getText().toString().trim();
 
         return FilenameUtils.createFilename(context, str.isEmpty() ? currentInfo.getName() : str);
     }
@@ -591,9 +592,9 @@ public class DownloadDialog extends DialogFragment
     }
 
     private void prepareSelectedDownload() {
-        StoredDirectoryHelper mainStorage;
+        final StoredDirectoryHelper mainStorage;
-        MediaFormat format;
+        final MediaFormat format;
-        String mime;
+        final String mime;
 
         // first, build the filename and get the output folder (if possible)
         // later, run a very very very large file checking logic
@@ -683,15 +684,17 @@ public class DownloadDialog extends DialogFragment
                 storage = new StoredFileHelper(context, mainStorage.getUri(), targetFile,
                         mainStorage.getTag());
             }
-        } catch (Exception e) {
+        } catch (final Exception e) {
             showErrorActivity(e);
             return;
         }
 
         // check if is our file
-        MissionState state = downloadManager.checkForExistingMission(storage);
+        final MissionState state = downloadManager.checkForExistingMission(storage);
-        @StringRes int msgBtn;
+        @StringRes
-        @StringRes int msgBody;
+        final int msgBtn;
+        @StringRes
+        final int msgBody;
 
         switch (state) {
             case Finished:
@@ -744,8 +747,7 @@ public class DownloadDialog extends DialogFragment
                 return;
         }
 
-
+        final AlertDialog.Builder askDialog = new AlertDialog.Builder(context)
-        AlertDialog.Builder askDialog = new AlertDialog.Builder(context)
                 .setTitle(R.string.download_dialog_title)
                 .setMessage(msgBody)
                 .setNegativeButton(android.R.string.cancel, null);
@@ -787,7 +789,7 @@ public class DownloadDialog extends DialogFragment
                             // try take (or steal) the file
                             storageNew = new StoredFileHelper(context, mainStorage.getUri(),
                                     targetFile, mainStorage.getTag());
-                        } catch (IOException e) {
+                        } catch (final IOException e) {
                             Log.e(TAG, "Failed to take (or steal) the file in "
                                     + targetFile.toString());
                             storageNew = null;
@@ -825,18 +827,18 @@ public class DownloadDialog extends DialogFragment
             if (storage.length() > 0) {
                 storage.truncate();
             }
-        } catch (IOException e) {
+        } catch (final IOException e) {
             Log.e(TAG, "failed to truncate the file: " + storage.getUri().toString(), e);
             showFailedDialog(R.string.overwrite_failed);
             return;
         }
 
-        Stream selectedStream;
+        final Stream selectedStream;
         Stream secondaryStream = null;
-        char kind;
+        final char kind;
         int threads = threadsSeekBar.getProgress() + 1;
-        String[] urls;
+        final String[] urls;
-        MissionRecoveryInfo[] recoveryInfo;
+        final MissionRecoveryInfo[] recoveryInfo;
         String psName = null;
         String[] psArgs = null;
         long nearLength = 0;
@@ -857,7 +859,7 @@ public class DownloadDialog extends DialogFragment
                 kind = 'v';
                 selectedStream = videoStreamsAdapter.getItem(selectedVideoIndex);
 
-                SecondaryStreamHelper<AudioStream> secondary = videoStreamsAdapter
+                final SecondaryStreamHelper<AudioStream> secondary = videoStreamsAdapter
                         .getAllSecondary()
                         .get(wrappedVideoStreams.getStreamsList().indexOf(selectedStream));
 
@@ -871,7 +873,7 @@ public class DownloadDialog extends DialogFragment
                     }
 
                     psArgs = null;
-                    long videoSize = wrappedVideoStreams
+                    final long videoSize = wrappedVideoStreams
                             .getSizeInBytes((VideoStream) selectedStream);
 
                     // set nearLength, only, if both sizes are fetched or known. This probably

app/src/main/java/org/schabi/newpipe/fragments/BaseStateFragment.java

@@ -230,7 +230,7 @@ public abstract class BaseStateFragment<I> extends BaseFragment implements ViewC
         }
         Toast.makeText(activity, R.string.recaptcha_request_toast, Toast.LENGTH_LONG).show();
         // Starting ReCaptcha Challenge Activity
-        Intent intent = new Intent(activity, ReCaptchaActivity.class);
+        final Intent intent = new Intent(activity, ReCaptchaActivity.class);
         intent.putExtra(ReCaptchaActivity.RECAPTCHA_URL_EXTRA, exception.getUrl());
         startActivityForResult(intent, ReCaptchaActivity.RECAPTCHA_REQUEST);
 

app/src/main/java/org/schabi/newpipe/fragments/MainFragment.java

@@ -104,7 +104,7 @@ public class MainFragment extends BaseFragment implements TabLayout.OnTabSelecte
     public void onResume() {
         super.onResume();
 
-        boolean youtubeRestrictedModeEnabled =
+        final boolean youtubeRestrictedModeEnabled =
                 PreferenceManager.getDefaultSharedPreferences(getContext())
                         .getBoolean(youtubeRestrictedModeEnabledKey, false);
         if (previousYoutubeRestrictedModeEnabled != youtubeRestrictedModeEnabled) {
@@ -137,7 +137,7 @@ public class MainFragment extends BaseFragment implements TabLayout.OnTabSelecte
         }
         inflater.inflate(R.menu.main_fragment_menu, menu);
 
-        ActionBar supportActionBar = activity.getSupportActionBar();
+        final ActionBar supportActionBar = activity.getSupportActionBar();
         if (supportActionBar != null) {
             supportActionBar.setDisplayHomeAsUpEnabled(false);
         }
@@ -150,7 +150,7 @@ public class MainFragment extends BaseFragment implements TabLayout.OnTabSelecte
                 try {
                     NavigationHelper.openSearchFragment(getFM(),
                             ServiceHelper.getSelectedServiceId(activity), "");
-                } catch (Exception e) {
+                } catch (final Exception e) {
                     ErrorActivity.reportUiError((AppCompatActivity) getActivity(), e);
                 }
                 return true;
@@ -237,7 +237,7 @@ public class MainFragment extends BaseFragment implements TabLayout.OnTabSelecte
             Fragment fragment = null;
             try {
                 fragment = tab.getFragment(context);
-            } catch (ExtractionException e) {
+            } catch (final ExtractionException e) {
                 throwable = e;
             }
 

app/src/main/java/org/schabi/newpipe/fragments/OnScrollBelowItemsListener.java

@@ -14,9 +14,9 @@ public abstract class OnScrollBelowItemsListener extends RecyclerView.OnScrollLi
         super.onScrolled(recyclerView, dx, dy);
         if (dy > 0) {
             int pastVisibleItems = 0;
-            int visibleItemCount;
+            final int visibleItemCount;
-            int totalItemCount;
+            final int totalItemCount;
-            RecyclerView.LayoutManager layoutManager = recyclerView.getLayoutManager();
+            final RecyclerView.LayoutManager layoutManager = recyclerView.getLayoutManager();
 
             visibleItemCount = layoutManager.getChildCount();
             totalItemCount = layoutManager.getItemCount();
@@ -26,7 +26,7 @@ public abstract class OnScrollBelowItemsListener extends RecyclerView.OnScrollLi
                 pastVisibleItems = ((LinearLayoutManager) layoutManager)
                         .findFirstVisibleItemPosition();
             } else if (layoutManager instanceof StaggeredGridLayoutManager) {
-                int[] positions = ((StaggeredGridLayoutManager) layoutManager)
+                final int[] positions = ((StaggeredGridLayoutManager) layoutManager)
                         .findFirstVisibleItemPositions(null);
                 if (positions != null && positions.length > 0) {
                     pastVisibleItems = positions[0];

app/src/main/java/org/schabi/newpipe/fragments/detail/TabAdaptor.java

@@ -50,7 +50,7 @@ public class TabAdaptor extends FragmentPagerAdapter {
     }
 
     public void updateItem(final String title, final Fragment fragment) {
-        int index = mFragmentTitleList.indexOf(title);
+        final int index = mFragmentTitleList.indexOf(title);
         if (index != -1) {
             updateItem(index, fragment);
         }

app/src/main/java/org/schabi/newpipe/fragments/detail/VideoDetailFragment.java

@@ -18,6 +18,12 @@ import android.os.Handler;
 import android.os.IBinder;
 import android.preference.PreferenceManager;
 import android.provider.Settings;
+import android.text.Html;
+import android.text.Spanned;
+import android.text.TextUtils;
+import android.text.util.Linkify;
+import android.util.DisplayMetrics;
+import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.MotionEvent;
 import android.view.View;
@@ -30,31 +36,25 @@ import android.widget.ImageView;
 import android.widget.LinearLayout;
 import android.widget.RelativeLayout;
 import android.widget.TextView;
+
 import androidx.annotation.DrawableRes;
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.appcompat.app.AlertDialog;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.appcompat.content.res.AppCompatResources;
 import androidx.appcompat.widget.Toolbar;
 import androidx.coordinatorlayout.widget.CoordinatorLayout;
+import androidx.core.content.ContextCompat;
+import androidx.fragment.app.Fragment;
+import androidx.viewpager.widget.ViewPager;
+
 import com.google.android.exoplayer2.ExoPlaybackException;
 import com.google.android.exoplayer2.PlaybackParameters;
 import com.google.android.exoplayer2.Player;
 import com.google.android.material.appbar.AppBarLayout;
 import com.google.android.material.bottomsheet.BottomSheetBehavior;
 import com.google.android.material.tabs.TabLayout;
-import androidx.fragment.app.Fragment;
-import androidx.core.content.ContextCompat;
-import androidx.viewpager.widget.ViewPager;
-import android.text.Html;
-import android.text.Spanned;
-import android.text.TextUtils;
-import android.text.util.Linkify;
-import android.util.DisplayMetrics;
-import android.util.Log;
-
-import androidx.appcompat.app.AppCompatActivity;
-import androidx.appcompat.content.res.AppCompatResources;
-
 import com.nostra13.universalimageloader.core.assist.FailReason;
 import com.nostra13.universalimageloader.core.listener.ImageLoadingListener;
 import com.nostra13.universalimageloader.core.listener.SimpleImageLoadingListener;
@@ -93,8 +93,8 @@ import org.schabi.newpipe.player.playqueue.PlayQueueItem;
 import org.schabi.newpipe.player.playqueue.SinglePlayQueue;
 import org.schabi.newpipe.report.ErrorActivity;
 import org.schabi.newpipe.report.UserAction;
-import org.schabi.newpipe.util.DeviceUtils;
 import org.schabi.newpipe.util.Constants;
+import org.schabi.newpipe.util.DeviceUtils;
 import org.schabi.newpipe.util.ExtractorHelper;
 import org.schabi.newpipe.util.ImageDisplayConstants;
 import org.schabi.newpipe.util.InfoCache;
@@ -124,9 +124,9 @@ import io.reactivex.disposables.Disposable;
 import io.reactivex.schedulers.Schedulers;
 
 import static org.schabi.newpipe.extractor.StreamingService.ServiceInfo.MediaCapability.COMMENTS;
+import static org.schabi.newpipe.extractor.stream.StreamExtractor.NO_AGE_LIMIT;
 import static org.schabi.newpipe.player.helper.PlayerHelper.isClearingQueueConfirmationRequired;
 import static org.schabi.newpipe.player.playqueue.PlayQueueItem.RECOVERY_UNSET;
-import static org.schabi.newpipe.extractor.stream.StreamExtractor.NO_AGE_LIMIT;
 import static org.schabi.newpipe.util.AnimationUtils.animateView;
 
 public class VideoDetailFragment
@@ -371,7 +371,7 @@ public class VideoDetailFragment
 
     public static VideoDetailFragment getInstance(final int serviceId, final String videoUrl,
                                                   final String name, final PlayQueue playQueue) {
-        VideoDetailFragment instance = new VideoDetailFragment();
+        final VideoDetailFragment instance = new VideoDetailFragment();
         instance.setInitialData(serviceId, videoUrl, name, playQueue);
         return instance;
     }
@@ -635,7 +635,7 @@ public class VideoDetailFragment
         try {
             NavigationHelper.openChannelFragment(getFM(), currentInfo.getServiceId(),
                     subChannelUrl, subChannelName);
-        } catch (Exception e) {
+        } catch (final Exception e) {
             ErrorActivity.reportUiError((AppCompatActivity) getActivity(), e);
         }
     }
@@ -1062,7 +1062,7 @@ public class VideoDetailFragment
         if (pageAdapter.getCount() < 2) {
             tabLayout.setVisibility(View.GONE);
         } else {
-            int position = pageAdapter.getItemPositionByTitle(selectedTabTag);
+            final int position = pageAdapter.getItemPositionByTitle(selectedTabTag);
             if (position != -1) {
                 viewPager.setCurrentItem(position);
             }
@@ -1076,7 +1076,7 @@ public class VideoDetailFragment
                     .getServiceInfo()
                     .getMediaCapabilities()
                     .contains(COMMENTS);
-        } catch (ExtractionException e) {
+        } catch (final ExtractionException e) {
             return false;
         }
     }
@@ -1304,7 +1304,7 @@ public class VideoDetailFragment
         if (description.getType() == Description.HTML) {
             disposables.add(Single.just(description.getContent())
                     .map((@NonNull String descriptionText) -> {
-                        Spanned parsedDescription;
+                        final Spanned parsedDescription;
                         if (Build.VERSION.SDK_INT >= 24) {
                             parsedDescription = Html.fromHtml(descriptionText, 0);
                         } else {
@@ -1409,7 +1409,7 @@ public class VideoDetailFragment
                 }
             }
         };
-        IntentFilter intentFilter = new IntentFilter();
+        final IntentFilter intentFilter = new IntentFilter();
         intentFilter.addAction(ACTION_SHOW_MAIN_PLAYER);
         intentFilter.addAction(ACTION_HIDE_MAIN_PLAYER);
         activity.registerReceiver(broadcastReceiver, intentFilter);
@@ -1512,7 +1512,7 @@ public class VideoDetailFragment
             uploaderThumb.setVisibility(View.GONE);
         }
 
-        Drawable buddyDrawable = AppCompatResources.getDrawable(activity, R.drawable.buddy);
+        final Drawable buddyDrawable = AppCompatResources.getDrawable(activity, R.drawable.buddy);
         subChannelThumb.setImageDrawable(buddyDrawable);
         uploaderThumb.setImageDrawable(buddyDrawable);
 
@@ -1676,7 +1676,7 @@ public class VideoDetailFragment
             downloadDialog.setSubtitleStreams(currentInfo.getSubtitles());
 
             downloadDialog.show(activity.getSupportFragmentManager(), "downloadDialog");
-        } catch (Exception e) {
+        } catch (final Exception e) {
             final ErrorActivity.ErrorInfo info = ErrorActivity.ErrorInfo.make(UserAction.UI_ERROR,
                     ServiceList.all()
                             .get(currentInfo
@@ -1702,7 +1702,7 @@ public class VideoDetailFragment
             return true;
         }
 
-        int errorId = exception instanceof YoutubeStreamExtractor.DecryptException
+        final int errorId = exception instanceof YoutubeStreamExtractor.DecryptException
                 ? R.string.youtube_signature_decryption_error
                 : exception instanceof ExtractionException
                 ? R.string.parsing_error
@@ -2112,11 +2112,11 @@ public class VideoDetailFragment
         if (sortedVideoStreams == null) {
             return;
         }
-        CharSequence[] resolutions = new CharSequence[sortedVideoStreams.size()];
+        final CharSequence[] resolutions = new CharSequence[sortedVideoStreams.size()];
         for (int i = 0; i < sortedVideoStreams.size(); i++) {
             resolutions[i] = sortedVideoStreams.get(i).getResolution();
         }
-        AlertDialog.Builder builder = new AlertDialog.Builder(activity)
+        final AlertDialog.Builder builder = new AlertDialog.Builder(activity)
                 .setNegativeButton(android.R.string.cancel, null)
                 .setNeutralButton(R.string.open_in_browser, (dialog, i) ->
                         ShareUtils.openUrlInBrowser(requireActivity(), url)

app/src/main/java/org/schabi/newpipe/fragments/list/BaseListFragment.java

@@ -136,7 +136,7 @@ public abstract class BaseListFragment<I, N> extends BaseStateFragment<I>
             final RecyclerView.ViewHolder itemHolder =
                     itemsList.findContainingViewHolder(focusedItem);
             return itemHolder.getAdapterPosition();
-        } catch (NullPointerException e) {
+        } catch (final NullPointerException e) {
             return -1;
         }
     }
@@ -169,7 +169,7 @@ public abstract class BaseListFragment<I, N> extends BaseStateFragment<I>
         }
 
         itemsList.post(() -> {
-            RecyclerView.ViewHolder focusedHolder =
+            final RecyclerView.ViewHolder focusedHolder =
                     itemsList.findViewHolderForAdapterPosition(position);
 
             if (focusedHolder != null) {
@@ -279,7 +279,7 @@ public abstract class BaseListFragment<I, N> extends BaseStateFragment<I>
                             selectedItem.getServiceId(),
                             selectedItem.getUrl(),
                             selectedItem.getName());
-                } catch (Exception e) {
+                } catch (final Exception e) {
                     ErrorActivity.reportUiError((AppCompatActivity) getActivity(), e);
                 }
             }
@@ -294,7 +294,7 @@ public abstract class BaseListFragment<I, N> extends BaseStateFragment<I>
                             selectedItem.getServiceId(),
                             selectedItem.getUrl(),
                             selectedItem.getName());
-                } catch (Exception e) {
+                } catch (final Exception e) {
                     ErrorActivity.reportUiError((AppCompatActivity) getActivity(), e);
                 }
             }
@@ -367,7 +367,7 @@ public abstract class BaseListFragment<I, N> extends BaseStateFragment<I>
                     + "menu = [" + menu + "], inflater = [" + inflater + "]");
         }
         super.onCreateOptionsMenu(menu, inflater);
-        ActionBar supportActionBar = activity.getSupportActionBar();
+        final ActionBar supportActionBar = activity.getSupportActionBar();
         if (supportActionBar != null) {
             supportActionBar.setDisplayShowTitleEnabled(true);
             if (useAsFrontPage) {

app/src/main/java/org/schabi/newpipe/fragments/list/channel/ChannelFragment.java

@@ -98,7 +98,7 @@ public class ChannelFragment extends BaseListInfoFragment<ChannelInfo>
 
     public static ChannelFragment getInstance(final int serviceId, final String url,
                                               final String name) {
-        ChannelFragment instance = new ChannelFragment();
+        final ChannelFragment instance = new ChannelFragment();
         instance.setInitialData(serviceId, url, name);
         return instance;
     }
@@ -189,7 +189,7 @@ public class ChannelFragment extends BaseListInfoFragment<ChannelInfo>
     @Override
     public void onCreateOptionsMenu(final Menu menu, final MenuInflater inflater) {
         super.onCreateOptionsMenu(menu, inflater);
-        ActionBar supportActionBar = activity.getSupportActionBar();
+        final ActionBar supportActionBar = activity.getSupportActionBar();
         if (useAsFrontPage && supportActionBar != null) {
             supportActionBar.setDisplayHomeAsUpEnabled(false);
         } else {
@@ -206,7 +206,7 @@ public class ChannelFragment extends BaseListInfoFragment<ChannelInfo>
     private void openRssFeed() {
         final ChannelInfo info = currentInfo;
         if (info != null) {
-            Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(info.getFeedUrl()));
+            final Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(info.getFeedUrl()));
             startActivity(intent);
         }
     }
@@ -345,7 +345,7 @@ public class ChannelFragment extends BaseListInfoFragment<ChannelInfo>
                 if (DEBUG) {
                     Log.d(TAG, "No subscription to this channel!");
                 }
-                SubscriptionEntity channel = new SubscriptionEntity();
+                final SubscriptionEntity channel = new SubscriptionEntity();
                 channel.setServiceId(info.getServiceId());
                 channel.setUrl(info.getUrl());
                 channel.setData(info.getName(),
@@ -371,16 +371,16 @@ public class ChannelFragment extends BaseListInfoFragment<ChannelInfo>
                     + "isSubscribed = [" + isSubscribed + "]");
         }
 
-        boolean isButtonVisible = headerSubscribeButton.getVisibility() == View.VISIBLE;
+        final boolean isButtonVisible = headerSubscribeButton.getVisibility() == View.VISIBLE;
-        int backgroundDuration = isButtonVisible ? 300 : 0;
+        final int backgroundDuration = isButtonVisible ? 300 : 0;
-        int textDuration = isButtonVisible ? 200 : 0;
+        final int textDuration = isButtonVisible ? 200 : 0;
 
-        int subscribeBackground = ThemeHelper
+        final int subscribeBackground = ThemeHelper
                 .resolveColorFromAttr(activity, R.attr.colorPrimary);
-        int subscribeText = ContextCompat.getColor(activity, R.color.subscribe_text_color);
+        final int subscribeText = ContextCompat.getColor(activity, R.color.subscribe_text_color);
-        int subscribedBackground = ContextCompat
+        final int subscribedBackground = ContextCompat
                 .getColor(activity, R.color.subscribed_background_color);
-        int subscribedText = ContextCompat.getColor(activity, R.color.subscribed_text_color);
+        final int subscribedText = ContextCompat.getColor(activity, R.color.subscribed_text_color);
 
         if (!isSubscribed) {
             headerSubscribeButton.setText(R.string.subscribe_button_title);
@@ -429,7 +429,7 @@ public class ChannelFragment extends BaseListInfoFragment<ChannelInfo>
                         NavigationHelper.openChannelFragment(getFM(), currentInfo.getServiceId(),
                                 currentInfo.getParentChannelUrl(),
                                 currentInfo.getParentChannelName());
-                    } catch (Exception e) {
+                    } catch (final Exception e) {
                         ErrorActivity.reportUiError((AppCompatActivity) getActivity(), e);
                     }
                 } else if (DEBUG) {
@@ -490,13 +490,13 @@ public class ChannelFragment extends BaseListInfoFragment<ChannelInfo>
 
         playlistCtrl.setVisibility(View.VISIBLE);
 
-        List<Throwable> errors = new ArrayList<>(result.getErrors());
+        final List<Throwable> errors = new ArrayList<>(result.getErrors());
         if (!errors.isEmpty()) {
 
             // handling ContentNotSupportedException not to show the error but an appropriate string
             // so that crashes won't be sent uselessly and the user will understand what happened
             for (Iterator<Throwable> it = errors.iterator(); it.hasNext();) {
-                Throwable throwable = it.next();
+                final Throwable throwable = it.next();
                 if (throwable instanceof ContentNotSupportedException) {
                     showContentNotSupported();
                     it.remove();
@@ -549,7 +549,7 @@ public class ChannelFragment extends BaseListInfoFragment<ChannelInfo>
 
     private PlayQueue getPlayQueue(final int index) {
         final List<StreamInfoItem> streamItems = new ArrayList<>();
-        for (InfoItem i : infoListAdapter.getItemsList()) {
+        for (final InfoItem i : infoListAdapter.getItemsList()) {
             if (i instanceof StreamInfoItem) {
                 streamItems.add((StreamInfoItem) i);
             }
@@ -581,7 +581,7 @@ public class ChannelFragment extends BaseListInfoFragment<ChannelInfo>
             return true;
         }
 
-        int errorId = exception instanceof ExtractionException
+        final int errorId = exception instanceof ExtractionException
                 ? R.string.parsing_error : R.string.general_error;
 
         onUnrecoverableError(exception, UserAction.REQUESTED_CHANNEL,

app/src/main/java/org/schabi/newpipe/fragments/list/comments/CommentsFragment.java

@@ -30,7 +30,7 @@ public class CommentsFragment extends BaseListInfoFragment<CommentsInfo> {
 
     public static CommentsFragment getInstance(final int serviceId, final  String url,
                                                final String name) {
-        CommentsFragment instance = new CommentsFragment();
+        final CommentsFragment instance = new CommentsFragment();
         instance.setInitialData(serviceId, url, name);
         return instance;
     }

app/src/main/java/org/schabi/newpipe/fragments/list/kiosk/DefaultKioskFragment.java

@@ -45,7 +45,7 @@ public class DefaultKioskFragment extends KioskFragment {
 
             currentInfo = null;
             currentNextPage = null;
-        } catch (ExtractionException e) {
+        } catch (final ExtractionException e) {
             onUnrecoverableError(e, UserAction.REQUESTED_KIOSK, "none",
                     "Loading default kiosk from selected service", 0);
         }

app/src/main/java/org/schabi/newpipe/fragments/list/kiosk/KioskFragment.java

@@ -72,9 +72,9 @@ public class KioskFragment extends BaseListInfoFragment<KioskInfo> {
 
     public static KioskFragment getInstance(final int serviceId, final String kioskId)
             throws ExtractionException {
-        KioskFragment instance = new KioskFragment();
+        final KioskFragment instance = new KioskFragment();
-        StreamingService service = NewPipe.getService(serviceId);
+        final StreamingService service = NewPipe.getService(serviceId);
-        ListLinkHandlerFactory kioskLinkHandlerFactory = service.getKioskList()
+        final ListLinkHandlerFactory kioskLinkHandlerFactory = service.getKioskList()
                 .getListLinkHandlerFactoryByType(kioskId);
         instance.setInitialData(serviceId,
                 kioskLinkHandlerFactory.fromId(kioskId).getUrl(), kioskId);
@@ -101,7 +101,7 @@ public class KioskFragment extends BaseListInfoFragment<KioskInfo> {
         if (useAsFrontPage && isVisibleToUser && activity != null) {
             try {
                 setTitle(kioskTranslatedName);
-            } catch (Exception e) {
+            } catch (final Exception e) {
                 onUnrecoverableError(e, UserAction.UI_ERROR,
                         "none",
                         "none", R.string.app_ui_crash);
@@ -132,7 +132,7 @@ public class KioskFragment extends BaseListInfoFragment<KioskInfo> {
     @Override
     public void onCreateOptionsMenu(final Menu menu, final MenuInflater inflater) {
         super.onCreateOptionsMenu(menu, inflater);
-        ActionBar supportActionBar = activity.getSupportActionBar();
+        final ActionBar supportActionBar = activity.getSupportActionBar();
         if (supportActionBar != null && useAsFrontPage) {
             supportActionBar.setDisplayHomeAsUpEnabled(false);
         }

app/src/main/java/org/schabi/newpipe/fragments/list/playlist/PlaylistFragment.java

@@ -85,7 +85,7 @@ public class PlaylistFragment extends BaseListInfoFragment<PlaylistInfo> {
 
     public static PlaylistFragment getInstance(final int serviceId, final String url,
                                                final String name) {
-        PlaylistFragment instance = new PlaylistFragment();
+        final PlaylistFragment instance = new PlaylistFragment();
         instance.setInitialData(serviceId, url, name);
         return instance;
     }
@@ -288,7 +288,7 @@ public class PlaylistFragment extends BaseListInfoFragment<PlaylistInfo> {
                     try {
                         NavigationHelper.openChannelFragment(getFM(), result.getServiceId(),
                                 result.getUploaderUrl(), result.getUploaderName());
-                    } catch (Exception e) {
+                    } catch (final Exception e) {
                         ErrorActivity.reportUiError((AppCompatActivity) getActivity(), e);
                     }
                 });
@@ -339,7 +339,7 @@ public class PlaylistFragment extends BaseListInfoFragment<PlaylistInfo> {
 
     private PlayQueue getPlayQueue(final int index) {
         final List<StreamInfoItem> infoItems = new ArrayList<>();
-        for (InfoItem i : infoListAdapter.getItemsList()) {
+        for (final InfoItem i : infoListAdapter.getItemsList()) {
             if (i instanceof StreamInfoItem) {
                 infoItems.add((StreamInfoItem) i);
             }
@@ -373,7 +373,7 @@ public class PlaylistFragment extends BaseListInfoFragment<PlaylistInfo> {
             return true;
         }
 
-        int errorId = exception instanceof ExtractionException
+        final int errorId = exception instanceof ExtractionException
                 ? R.string.parsing_error : R.string.general_error;
         onUnrecoverableError(exception, UserAction.REQUESTED_PLAYLIST,
                 NewPipe.getNameOfService(serviceId), url, errorId);

app/src/main/java/org/schabi/newpipe/fragments/list/search/SearchFragment.java

@@ -161,7 +161,7 @@ public class SearchFragment extends BaseListFragment<SearchInfo, ListExtractor.I
     private TextWatcher textWatcher;
 
     public static SearchFragment getInstance(final int serviceId, final String searchString) {
-        SearchFragment searchFragment = new SearchFragment();
+        final SearchFragment searchFragment = new SearchFragment();
         searchFragment.setQuery(serviceId, searchString, new String[0], "");
 
         if (!TextUtils.isEmpty(searchString)) {
@@ -187,8 +187,9 @@ public class SearchFragment extends BaseListFragment<SearchInfo, ListExtractor.I
         super.onAttach(context);
 
         suggestionListAdapter = new SuggestionListAdapter(activity);
-        SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(activity);
+        final SharedPreferences preferences
-        boolean isSearchHistoryEnabled = preferences
+                = PreferenceManager.getDefaultSharedPreferences(activity);
+        final boolean isSearchHistoryEnabled = preferences
                 .getBoolean(getString(R.string.enable_search_history_key), true);
         suggestionListAdapter.setShowSuggestionHistory(isSearchHistoryEnabled);
 
@@ -199,7 +200,8 @@ public class SearchFragment extends BaseListFragment<SearchInfo, ListExtractor.I
     public void onCreate(final Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
 
-        SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(activity);
+        final SharedPreferences preferences
+                = PreferenceManager.getDefaultSharedPreferences(activity);
         isSuggestionsEnabled = preferences
                 .getBoolean(getString(R.string.show_search_suggestions_key), true);
         contentCountry = preferences.getString(getString(R.string.content_country_key),
@@ -246,7 +248,7 @@ public class SearchFragment extends BaseListFragment<SearchInfo, ListExtractor.I
 
         try {
             service = NewPipe.getService(serviceId);
-        } catch (Exception e) {
+        } catch (final Exception e) {
             ErrorActivity.reportError(getActivity(), e, getActivity().getClass(),
                     getActivity().findViewById(android.R.id.content),
                     ErrorActivity.ErrorInfo.make(UserAction.UI_ERROR,
@@ -413,7 +415,7 @@ public class SearchFragment extends BaseListFragment<SearchInfo, ListExtractor.I
     public void onCreateOptionsMenu(final Menu menu, final MenuInflater inflater) {
         super.onCreateOptionsMenu(menu, inflater);
 
-        ActionBar supportActionBar = activity.getSupportActionBar();
+        final ActionBar supportActionBar = activity.getSupportActionBar();
         if (supportActionBar != null) {
             supportActionBar.setDisplayShowTitleEnabled(false);
             supportActionBar.setDisplayHomeAsUpEnabled(true);
@@ -424,16 +426,16 @@ public class SearchFragment extends BaseListFragment<SearchInfo, ListExtractor.I
         int itemId = 0;
         boolean isFirstItem = true;
         final Context c = getContext();
-        for (String filter : service.getSearchQHFactory().getAvailableContentFilter()) {
+        for (final String filter : service.getSearchQHFactory().getAvailableContentFilter()) {
             if (filter.equals("music_songs")) {
-                MenuItem musicItem = menu.add(2,
+                final MenuItem musicItem = menu.add(2,
                         itemId++,
                         0,
                         "YouTube Music");
                 musicItem.setEnabled(false);
             }
             menuItemToFilterName.put(itemId, filter);
-            MenuItem item = menu.add(1,
+            final MenuItem item = menu.add(1,
                     itemId++,
                     0,
                     ServiceHelper.getTranslatedFilterString(filter, c));
@@ -449,7 +451,7 @@ public class SearchFragment extends BaseListFragment<SearchInfo, ListExtractor.I
 
     @Override
     public boolean onOptionsItemSelected(final MenuItem item) {
-        List<String> cf = new ArrayList<>(1);
+        final List<String> cf = new ArrayList<>(1);
         cf.add(menuItemToFilterName.get(item.getItemId()));
         changeContentFilter(item, cf);
 
@@ -458,7 +460,7 @@ public class SearchFragment extends BaseListFragment<SearchInfo, ListExtractor.I
 
     private void restoreFilterChecked(final Menu menu, final int itemId) {
         if (itemId != -1) {
-            MenuItem item = menu.findItem(itemId);
+            final MenuItem item = menu.findItem(itemId);
             if (item == null) {
                 return;
             }
@@ -578,7 +580,7 @@ public class SearchFragment extends BaseListFragment<SearchInfo, ListExtractor.I
 
             @Override
             public void afterTextChanged(final Editable s) {
-                String newText = searchEditText.getText().toString();
+                final String newText = searchEditText.getText().toString();
                 suggestionPublisher.onNext(newText);
             }
         };
@@ -644,7 +646,7 @@ public class SearchFragment extends BaseListFragment<SearchInfo, ListExtractor.I
         }
 
         if (searchEditText.requestFocus()) {
-            InputMethodManager imm = (InputMethodManager) activity.getSystemService(
+            final InputMethodManager imm = (InputMethodManager) activity.getSystemService(
                     Context.INPUT_METHOD_SERVICE);
             imm.showSoftInput(searchEditText, InputMethodManager.SHOW_FORCED);
         }
@@ -658,7 +660,7 @@ public class SearchFragment extends BaseListFragment<SearchInfo, ListExtractor.I
             return;
         }
 
-        InputMethodManager imm = (InputMethodManager) activity
+        final InputMethodManager imm = (InputMethodManager) activity
                 .getSystemService(Context.INPUT_METHOD_SERVICE);
         imm.hideSoftInputFromWindow(searchEditText.getWindowToken(),
                 InputMethodManager.RESULT_UNCHANGED_SHOWN);
@@ -725,8 +727,8 @@ public class SearchFragment extends BaseListFragment<SearchInfo, ListExtractor.I
                             .getRelatedSearches(query, 3, 25);
                     final Observable<List<SuggestionItem>> local = flowable.toObservable()
                             .map(searchHistoryEntries -> {
-                                List<SuggestionItem> result = new ArrayList<>();
+                                final List<SuggestionItem> result = new ArrayList<>();
-                                for (SearchHistoryEntry entry : searchHistoryEntries) {
+                                for (final SearchHistoryEntry entry : searchHistoryEntries) {
                                     result.add(new SuggestionItem(true, entry.getSearch()));
                                 }
                                 return result;
@@ -742,15 +744,15 @@ public class SearchFragment extends BaseListFragment<SearchInfo, ListExtractor.I
                             .suggestionsFor(serviceId, query)
                             .toObservable()
                             .map(strings -> {
-                                List<SuggestionItem> result = new ArrayList<>();
+                                final List<SuggestionItem> result = new ArrayList<>();
-                                for (String entry : strings) {
+                                for (final String entry : strings) {
                                     result.add(new SuggestionItem(false, entry));
                                 }
                                 return result;
                             });
 
                     return Observable.zip(local, network, (localResult, networkResult) -> {
-                        List<SuggestionItem> result = new ArrayList<>();
+                        final List<SuggestionItem> result = new ArrayList<>();
                         if (localResult.size() > 0) {
                             result.addAll(localResult);
                         }
@@ -759,7 +761,7 @@ public class SearchFragment extends BaseListFragment<SearchInfo, ListExtractor.I
                         final Iterator<SuggestionItem> iterator = networkResult.iterator();
                         while (iterator.hasNext() && localResult.size() > 0) {
                             final SuggestionItem next = iterator.next();
-                            for (SuggestionItem item : localResult) {
+                            for (final SuggestionItem item : localResult) {
                                 if (item.query.equals(next.query)) {
                                     iterator.remove();
                                     break;
@@ -813,7 +815,7 @@ public class SearchFragment extends BaseListFragment<SearchInfo, ListExtractor.I
                                 showError(getString(R.string.url_not_supported_toast), false)));
                 return;
             }
-        } catch (Exception ignored) {
+        } catch (final Exception ignored) {
             // Exception occurred, it's not a url
         }
 
@@ -935,7 +937,7 @@ public class SearchFragment extends BaseListFragment<SearchInfo, ListExtractor.I
             return;
         }
 
-        int errorId = exception instanceof ParsingException
+        final int errorId = exception instanceof ParsingException
                 ? R.string.parsing_error
                 : R.string.general_error;
         onUnrecoverableError(exception, UserAction.GET_SUGGESTIONS,
@@ -1051,7 +1053,7 @@ public class SearchFragment extends BaseListFragment<SearchInfo, ListExtractor.I
             infoListAdapter.clearStreamItemList();
             showEmptyState();
         } else {
-            int errorId = exception instanceof ParsingException
+            final int errorId = exception instanceof ParsingException
                     ? R.string.parsing_error
                     : R.string.general_error;
             onUnrecoverableError(exception, UserAction.SEARCHED,

app/src/main/java/org/schabi/newpipe/fragments/list/search/SuggestionListAdapter.java

@@ -33,7 +33,7 @@ public class SuggestionListAdapter
             this.items.addAll(items);
         } else {
             // remove history items if history is disabled
-            for (SuggestionItem item : items) {
+            for (final SuggestionItem item : items) {
                 if (!item.fromHistory) {
                     this.items.add(item);
                 }
@@ -123,8 +123,8 @@ public class SuggestionListAdapter
 
         private static int resolveResourceIdFromAttr(final Context context,
                                                      @AttrRes final int attr) {
-            TypedArray a = context.getTheme().obtainStyledAttributes(new int[]{attr});
+            final TypedArray a = context.getTheme().obtainStyledAttributes(new int[]{attr});
-            int attributeResourceId = a.getResourceId(0, 0);
+            final int attributeResourceId = a.getResourceId(0, 0);
             a.recycle();
             return attributeResourceId;
         }

app/src/main/java/org/schabi/newpipe/fragments/list/videos/RelatedVideosFragment.java

@@ -42,7 +42,7 @@ public class RelatedVideosFragment extends BaseListInfoFragment<RelatedStreamInf
     private Switch autoplaySwitch;
 
     public static RelatedVideosFragment getInstance(final StreamInfo info) {
-        RelatedVideosFragment instance = new RelatedVideosFragment();
+        final RelatedVideosFragment instance = new RelatedVideosFragment();
         instance.setInitialData(info);
         return instance;
     }
@@ -191,7 +191,7 @@ public class RelatedVideosFragment extends BaseListInfoFragment<RelatedStreamInf
     protected void onRestoreInstanceState(@NonNull final Bundle savedState) {
         super.onRestoreInstanceState(savedState);
         if (savedState != null) {
-            Serializable serializable = savedState.getSerializable(INFO_KEY);
+            final Serializable serializable = savedState.getSerializable(INFO_KEY);
             if (serializable instanceof RelatedStreamInfo) {
                 this.relatedStreamInfo = (RelatedStreamInfo) serializable;
             }
@@ -201,8 +201,8 @@ public class RelatedVideosFragment extends BaseListInfoFragment<RelatedStreamInf
     @Override
     public void onSharedPreferenceChanged(final SharedPreferences sharedPreferences,
                                           final String s) {
-        SharedPreferences pref = PreferenceManager.getDefaultSharedPreferences(getContext());
+        final SharedPreferences pref = PreferenceManager.getDefaultSharedPreferences(getContext());
-        boolean autoplay = pref.getBoolean(getString(R.string.auto_queue_key), false);
+        final boolean autoplay = pref.getBoolean(getString(R.string.auto_queue_key), false);
         if (autoplaySwitch != null) {
             autoplaySwitch.setChecked(autoplay);
         }

app/src/main/java/org/schabi/newpipe/info_list/InfoItemBuilder.java

@@ -70,7 +70,8 @@ public class InfoItemBuilder {
     public View buildView(@NonNull final ViewGroup parent, @NonNull final InfoItem infoItem,
                           final HistoryRecordManager historyRecordManager,
                           final boolean useMiniVariant) {
-        InfoItemHolder holder = holderFromInfoType(parent, infoItem.getInfoType(), useMiniVariant);
+        final InfoItemHolder holder
+                = holderFromInfoType(parent, infoItem.getInfoType(), useMiniVariant);
         holder.updateFromItem(infoItem, historyRecordManager);
         return holder.itemView;
     }

app/src/main/java/org/schabi/newpipe/info_list/InfoItemDialog.java

@@ -31,10 +31,10 @@ public class InfoItemDialog {
         final View bannerView = View.inflate(activity, R.layout.dialog_title, null);
         bannerView.setSelected(true);
 
-        TextView titleView = bannerView.findViewById(R.id.itemTitleView);
+        final TextView titleView = bannerView.findViewById(R.id.itemTitleView);
         titleView.setText(title);
 
-        TextView detailsView = bannerView.findViewById(R.id.itemAdditionalDetails);
+        final TextView detailsView = bannerView.findViewById(R.id.itemAdditionalDetails);
         if (additionalDetail != null) {
             detailsView.setText(additionalDetail);
             detailsView.setVisibility(View.VISIBLE);

app/src/main/java/org/schabi/newpipe/info_list/InfoListAdapter.java

@@ -123,7 +123,7 @@ public class InfoListAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolde
                     + infoItemList.size() + ", data.size() = " + data.size());
         }
 
-        int offsetStart = sizeConsideringHeaderOffset();
+        final int offsetStart = sizeConsideringHeaderOffset();
         infoItemList.addAll(data);
 
         if (DEBUG) {
@@ -135,7 +135,7 @@ public class InfoListAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolde
         notifyItemRangeInserted(offsetStart, data.size());
 
         if (footer != null && showFooter) {
-            int footerNow = sizeConsideringHeaderOffset();
+            final int footerNow = sizeConsideringHeaderOffset();
             notifyItemMoved(offsetStart, footerNow);
 
             if (DEBUG) {
@@ -160,7 +160,7 @@ public class InfoListAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolde
                     + infoItemList.size() + ", thread = " + Thread.currentThread());
         }
 
-        int positionInserted = sizeConsideringHeaderOffset();
+        final int positionInserted = sizeConsideringHeaderOffset();
         infoItemList.add(data);
 
         if (DEBUG) {
@@ -172,7 +172,7 @@ public class InfoListAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolde
         notifyItemInserted(positionInserted);
 
         if (footer != null && showFooter) {
-            int footerNow = sizeConsideringHeaderOffset();
+            final int footerNow = sizeConsideringHeaderOffset();
             notifyItemMoved(positionInserted, footerNow);
 
             if (DEBUG) {
@@ -191,7 +191,7 @@ public class InfoListAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolde
     }
 
     public void setHeader(final View header) {
-        boolean changed = header != this.header;
+        final boolean changed = header != this.header;
         this.header = header;
         if (changed) {
             notifyDataSetChanged();
@@ -219,7 +219,7 @@ public class InfoListAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolde
     }
 
     private int sizeConsideringHeaderOffset() {
-        int i = infoItemList.size() + (header != null ? 1 : 0);
+        final int i = infoItemList.size() + (header != null ? 1 : 0);
         if (DEBUG) {
             Log.d(TAG, "sizeConsideringHeaderOffset() called → " + i);
         }
@@ -347,7 +347,7 @@ public class InfoListAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolde
     public void onBindViewHolder(@NonNull final RecyclerView.ViewHolder holder, final int position,
                                  @NonNull final List<Object> payloads) {
         if (!payloads.isEmpty() && holder instanceof InfoItemHolder) {
-            for (Object payload : payloads) {
+            for (final Object payload : payloads) {
                 if (payload instanceof StreamStateEntity) {
                     ((InfoItemHolder) holder).updateState(infoItemList
                             .get(header == null ? position : position - 1), recordManager);

app/src/main/java/org/schabi/newpipe/info_list/holder/ChannelInfoItemHolder.java

@@ -56,8 +56,8 @@ public class ChannelInfoItemHolder extends ChannelMiniInfoItemHolder {
         String details = super.getDetailLine(item);
 
         if (item.getStreamCount() >= 0) {
-            String formattedVideoAmount = Localization.localizeStreamCount(itemBuilder.getContext(),
+            final String formattedVideoAmount = Localization.localizeStreamCount(
-                    item.getStreamCount());
+                    itemBuilder.getContext(), item.getStreamCount());
 
             if (!details.isEmpty()) {
                 details += " • " + formattedVideoAmount;

app/src/main/java/org/schabi/newpipe/info_list/holder/CommentsMiniInfoItemHolder.java

@@ -45,9 +45,9 @@ public class CommentsMiniInfoItemHolder extends InfoItemHolder {
         @Override
         public String transformUrl(final Matcher match, final String url) {
             int timestamp = 0;
-            String hours = match.group(1);
+            final String hours = match.group(1);
-            String minutes = match.group(2);
+            final String minutes = match.group(2);
-            String seconds = match.group(3);
+            final String seconds = match.group(3);
             if (hours != null) {
                 timestamp += (Integer.parseInt(hours.replace(":", "")) * 3600);
             }
@@ -146,7 +146,7 @@ public class CommentsMiniInfoItemHolder extends InfoItemHolder {
                     item.getServiceId(),
                     item.getUploaderUrl(),
                     item.getUploaderName());
-        } catch (Exception e) {
+        } catch (final Exception e) {
             ErrorActivity.reportUiError((AppCompatActivity) itemBuilder.getContext(), e);
         }
     }
@@ -164,7 +164,7 @@ public class CommentsMiniInfoItemHolder extends InfoItemHolder {
             return false;
         }
 
-        URLSpan[] urls = itemContentView.getUrls();
+        final URLSpan[] urls = itemContentView.getUrls();
 
         return urls != null && urls.length != 0;
     }
@@ -181,12 +181,13 @@ public class CommentsMiniInfoItemHolder extends InfoItemHolder {
         boolean hasEllipsis = false;
 
         if (itemContentView.getLineCount() > COMMENT_DEFAULT_LINES) {
-            int endOfLastLine = itemContentView.getLayout().getLineEnd(COMMENT_DEFAULT_LINES - 1);
+            final int endOfLastLine
+                    = itemContentView.getLayout().getLineEnd(COMMENT_DEFAULT_LINES - 1);
             int end = itemContentView.getText().toString().lastIndexOf(' ', endOfLastLine - 2);
             if (end == -1) {
                 end = Math.max(endOfLastLine - 2, 0);
             }
-            String newVal = itemContentView.getText().subSequence(0, end) + " …";
+            final String newVal = itemContentView.getText().subSequence(0, end) + " …";
             itemContentView.setText(newVal);
             hasEllipsis = true;
         }

app/src/main/java/org/schabi/newpipe/info_list/holder/StreamMiniInfoItemHolder.java

@@ -60,7 +60,7 @@ public class StreamMiniInfoItemHolder extends InfoItemHolder {
                     R.color.duration_background_color));
             itemDurationView.setVisibility(View.VISIBLE);
 
-            StreamStateEntity state2 = historyRecordManager.loadStreamState(infoItem)
+            final StreamStateEntity state2 = historyRecordManager.loadStreamState(infoItem)
                     .blockingGet()[0];
             if (state2 != null) {
                 itemProgressView.setVisibility(View.VISIBLE);
@@ -113,7 +113,8 @@ public class StreamMiniInfoItemHolder extends InfoItemHolder {
                             final HistoryRecordManager historyRecordManager) {
         final StreamInfoItem item = (StreamInfoItem) infoItem;
 
-        StreamStateEntity state = historyRecordManager.loadStreamState(infoItem).blockingGet()[0];
+        final StreamStateEntity state
+                = historyRecordManager.loadStreamState(infoItem).blockingGet()[0];
         if (state != null && item.getDuration() > 0
                 && item.getStreamType() != StreamType.LIVE_STREAM) {
             itemProgressView.setMax((int) item.getDuration());

app/src/main/java/org/schabi/newpipe/local/LocalItemListAdapter.java

@@ -101,7 +101,7 @@ public class LocalItemListAdapter extends RecyclerView.Adapter<RecyclerView.View
                     + localItems.size() + ", data.size() = " + data.size());
         }
 
-        int offsetStart = sizeConsideringHeader();
+        final int offsetStart = sizeConsideringHeader();
         localItems.addAll(data);
 
         if (DEBUG) {
@@ -113,7 +113,7 @@ public class LocalItemListAdapter extends RecyclerView.Adapter<RecyclerView.View
         notifyItemRangeInserted(offsetStart, data.size());
 
         if (footer != null && showFooter) {
-            int footerNow = sizeConsideringHeader();
+            final int footerNow = sizeConsideringHeader();
             notifyItemMoved(offsetStart, footerNow);
 
             if (DEBUG) {
@@ -158,7 +158,7 @@ public class LocalItemListAdapter extends RecyclerView.Adapter<RecyclerView.View
     }
 
     public void setHeader(final View header) {
-        boolean changed = header != this.header;
+        final boolean changed = header != this.header;
         this.header = header;
         if (changed) {
             notifyDataSetChanged();
@@ -316,7 +316,7 @@ public class LocalItemListAdapter extends RecyclerView.Adapter<RecyclerView.View
     public void onBindViewHolder(@NonNull final RecyclerView.ViewHolder holder, final int position,
                                  @NonNull final List<Object> payloads) {
         if (!payloads.isEmpty() && holder instanceof LocalItemHolder) {
-            for (Object payload : payloads) {
+            for (final Object payload : payloads) {
                 if (payload instanceof StreamStateEntity) {
                     ((LocalItemHolder) holder).updateState(localItems
                             .get(header == null ? position : position - 1), recordManager);

app/src/main/java/org/schabi/newpipe/local/bookmark/BookmarkFragment.java

@@ -265,11 +265,11 @@ public final class BookmarkFragment extends BaseLocalListFragment<List<PlaylistL
     }
 
     private void showLocalDialog(final PlaylistMetadataEntry selectedItem) {
-        View dialogView = View.inflate(getContext(), R.layout.dialog_bookmark, null);
+        final View dialogView = View.inflate(getContext(), R.layout.dialog_bookmark, null);
-        EditText editText = dialogView.findViewById(R.id.playlist_name_edit_text);
+        final EditText editText = dialogView.findViewById(R.id.playlist_name_edit_text);
         editText.setText(selectedItem.name);
 
-        Builder builder = new AlertDialog.Builder(activity);
+        final Builder builder = new AlertDialog.Builder(activity);
         builder.setView(dialogView)
                 .setPositiveButton(R.string.rename_playlist, (dialog, which) -> {
                     changeLocalPlaylistName(selectedItem.uid, editText.getText().toString());

app/src/main/java/org/schabi/newpipe/local/dialog/PlaylistAppendDialog.java

@@ -39,14 +39,14 @@ public final class PlaylistAppendDialog extends PlaylistDialog {
     private CompositeDisposable playlistDisposables = new CompositeDisposable();
 
     public static PlaylistAppendDialog fromStreamInfo(final StreamInfo info) {
-        PlaylistAppendDialog dialog = new PlaylistAppendDialog();
+        final PlaylistAppendDialog dialog = new PlaylistAppendDialog();
         dialog.setInfo(Collections.singletonList(new StreamEntity(info)));
         return dialog;
     }
 
     public static PlaylistAppendDialog fromStreamInfoItems(final List<StreamInfoItem> items) {
-        PlaylistAppendDialog dialog = new PlaylistAppendDialog();
+        final PlaylistAppendDialog dialog = new PlaylistAppendDialog();
-        List<StreamEntity> entities = new ArrayList<>(items.size());
+        final List<StreamEntity> entities = new ArrayList<>(items.size());
         for (final StreamInfoItem item : items) {
             entities.add(new StreamEntity(item));
         }
@@ -55,8 +55,8 @@ public final class PlaylistAppendDialog extends PlaylistDialog {
     }
 
     public static PlaylistAppendDialog fromPlayQueueItems(final List<PlayQueueItem> items) {
-        PlaylistAppendDialog dialog = new PlaylistAppendDialog();
+        final PlaylistAppendDialog dialog = new PlaylistAppendDialog();
-        List<StreamEntity> entities = new ArrayList<>(items.size());
+        final List<StreamEntity> entities = new ArrayList<>(items.size());
         for (final PlayQueueItem item : items) {
             entities.add(new StreamEntity(item));
         }

app/src/main/java/org/schabi/newpipe/local/dialog/PlaylistCreationDialog.java

@@ -21,7 +21,7 @@ import io.reactivex.android.schedulers.AndroidSchedulers;
 
 public final class PlaylistCreationDialog extends PlaylistDialog {
     public static PlaylistCreationDialog newInstance(final List<StreamEntity> streams) {
-        PlaylistCreationDialog dialog = new PlaylistCreationDialog();
+        final PlaylistCreationDialog dialog = new PlaylistCreationDialog();
         dialog.setInfo(streams);
         return dialog;
     }
@@ -37,8 +37,8 @@ public final class PlaylistCreationDialog extends PlaylistDialog {
             return super.onCreateDialog(savedInstanceState);
         }
 
-        View dialogView = View.inflate(getContext(), R.layout.dialog_playlist_name, null);
+        final View dialogView = View.inflate(getContext(), R.layout.dialog_playlist_name, null);
-        EditText nameInput = dialogView.findViewById(R.id.playlist_name);
+        final EditText nameInput = dialogView.findViewById(R.id.playlist_name);
 
         final AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(getContext())
                 .setTitle(R.string.create_playlist)

app/src/main/java/org/schabi/newpipe/local/history/HistoryRecordManager.java

@@ -88,7 +88,7 @@ public class HistoryRecordManager {
         final Date currentTime = new Date();
         return Maybe.fromCallable(() -> database.runInTransaction(() -> {
             final long streamId = streamTable.upsert(new StreamEntity(info));
-            StreamHistoryEntity latestEntry = streamHistoryTable.getLatestEntry(streamId);
+            final StreamHistoryEntity latestEntry = streamHistoryTable.getLatestEntry(streamId);
 
             if (latestEntry != null) {
                 streamHistoryTable.delete(latestEntry);
@@ -129,7 +129,7 @@ public class HistoryRecordManager {
     }
 
     public Single<List<Long>> insertStreamHistory(final Collection<StreamHistoryEntry> entries) {
-        List<StreamHistoryEntity> entities = new ArrayList<>(entries.size());
+        final List<StreamHistoryEntity> entities = new ArrayList<>(entries.size());
         for (final StreamHistoryEntry entry : entries) {
             entities.add(entry.toStreamHistoryEntity());
         }
@@ -138,7 +138,7 @@ public class HistoryRecordManager {
     }
 
     public Single<Integer> deleteStreamHistory(final Collection<StreamHistoryEntry> entries) {
-        List<StreamHistoryEntity> entities = new ArrayList<>(entries.size());
+        final List<StreamHistoryEntity> entities = new ArrayList<>(entries.size());
         for (final StreamHistoryEntry entry : entries) {
             entities.add(entry.toStreamHistoryEntity());
         }
@@ -163,7 +163,7 @@ public class HistoryRecordManager {
         final SearchHistoryEntry newEntry = new SearchHistoryEntry(currentTime, serviceId, search);
 
         return Maybe.fromCallable(() -> database.runInTransaction(() -> {
-            SearchHistoryEntry latestEntry = searchHistoryTable.getLatestEntry();
+            final SearchHistoryEntry latestEntry = searchHistoryTable.getLatestEntry();
             if (latestEntry != null && latestEntry.hasEqualValues(newEntry)) {
                 latestEntry.setCreationDate(currentTime);
                 return (long) searchHistoryTable.update(latestEntry);
@@ -256,7 +256,7 @@ public class HistoryRecordManager {
     public Single<List<StreamStateEntity>> loadStreamStateBatch(final List<InfoItem> infos) {
         return Single.fromCallable(() -> {
             final List<StreamStateEntity> result = new ArrayList<>(infos.size());
-            for (InfoItem info : infos) {
+            for (final InfoItem info : infos) {
                 final List<StreamEntity> entities = streamTable
                         .getStream(info.getServiceId(), info.getUrl()).blockingFirst();
                 if (entities.isEmpty()) {
@@ -279,8 +279,8 @@ public class HistoryRecordManager {
             final List<? extends LocalItem> items) {
         return Single.fromCallable(() -> {
             final List<StreamStateEntity> result = new ArrayList<>(items.size());
-            for (LocalItem item : items) {
+            for (final LocalItem item : items) {
-                long streamId;
+                final long streamId;
                 if (item instanceof StreamStatisticsEntry) {
                     streamId = ((StreamStatisticsEntry) item).getStreamId();
                 } else if (item instanceof PlaylistStreamEntity) {

app/src/main/java/org/schabi/newpipe/local/history/StatisticsPlaylistFragment.java

@@ -455,7 +455,7 @@ public class StatisticsPlaylistFragment
         }
 
         final List<LocalItem> infoItems = itemListAdapter.getItemsList();
-        List<StreamInfoItem> streamInfoItems = new ArrayList<>(infoItems.size());
+        final List<StreamInfoItem> streamInfoItems = new ArrayList<>(infoItems.size());
         for (final LocalItem item : infoItems) {
             if (item instanceof StreamStatisticsEntry) {
                 streamInfoItems.add(((StreamStatisticsEntry) item).toStreamInfoItem());

app/src/main/java/org/schabi/newpipe/local/holder/LocalPlaylistStreamItemHolder.java

@@ -70,7 +70,7 @@ public class LocalPlaylistStreamItemHolder extends LocalItemHolder {
                     R.color.duration_background_color));
             itemDurationView.setVisibility(View.VISIBLE);
 
-            StreamStateEntity state = historyRecordManager
+            final StreamStateEntity state = historyRecordManager
                     .loadLocalStreamStateBatch(new ArrayList<LocalItem>() {{
                 add(localItem);
             }}).blockingGet().get(0);
@@ -116,7 +116,7 @@ public class LocalPlaylistStreamItemHolder extends LocalItemHolder {
         }
         final PlaylistStreamEntry item = (PlaylistStreamEntry) localItem;
 
-        StreamStateEntity state = historyRecordManager
+        final StreamStateEntity state = historyRecordManager
                 .loadLocalStreamStateBatch(new ArrayList<LocalItem>() {{
             add(localItem);
         }}).blockingGet().get(0);

app/src/main/java/org/schabi/newpipe/local/holder/LocalStatisticStreamItemHolder.java

@@ -98,7 +98,7 @@ public class LocalStatisticStreamItemHolder extends LocalItemHolder {
                     R.color.duration_background_color));
             itemDurationView.setVisibility(View.VISIBLE);
 
-            StreamStateEntity state = historyRecordManager
+            final StreamStateEntity state = historyRecordManager
                     .loadLocalStreamStateBatch(new ArrayList<LocalItem>() {{
                 add(localItem);
             }}).blockingGet().get(0);
@@ -146,7 +146,7 @@ public class LocalStatisticStreamItemHolder extends LocalItemHolder {
         }
         final StreamStatisticsEntry item = (StreamStatisticsEntry) localItem;
 
-        StreamStateEntity state = historyRecordManager
+        final StreamStateEntity state = historyRecordManager
                 .loadLocalStreamStateBatch(new ArrayList<LocalItem>() {{
             add(localItem);
         }}).blockingGet().get(0);

app/src/main/java/org/schabi/newpipe/local/playlist/LocalPlaylistFragment.java

@@ -98,7 +98,7 @@ public class LocalPlaylistFragment extends BaseLocalListFragment<List<PlaylistSt
     private boolean isRemovingWatched = false;
 
     public static LocalPlaylistFragment getInstance(final long playlistId, final String name) {
-        LocalPlaylistFragment instance = new LocalPlaylistFragment();
+        final LocalPlaylistFragment instance = new LocalPlaylistFragment();
         instance.setInitialData(playlistId, name);
         return instance;
     }
@@ -411,7 +411,7 @@ public class LocalPlaylistFragment extends BaseLocalListFragment<List<PlaylistSt
                     if (removePartiallyWatched) {
                         while (playlistIter.hasNext()) {
                             final PlaylistStreamEntry playlistItem = playlistIter.next();
-                            int indexInHistory = Collections.binarySearch(historyStreamIds,
+                            final int indexInHistory = Collections.binarySearch(historyStreamIds,
                                     playlistItem.getStreamId());
 
                             if (indexInHistory < 0) {
@@ -427,7 +427,7 @@ public class LocalPlaylistFragment extends BaseLocalListFragment<List<PlaylistSt
                                 .loadLocalStreamStateBatch(playlist).blockingGet().iterator();
 
                         while (playlistIter.hasNext()) {
-                            PlaylistStreamEntry playlistItem = playlistIter.next();
+                            final PlaylistStreamEntry playlistItem = playlistIter.next();
                             final int indexInHistory = Collections.binarySearch(historyStreamIds,
                                     playlistItem.getStreamId());
 
@@ -544,7 +544,7 @@ public class LocalPlaylistFragment extends BaseLocalListFragment<List<PlaylistSt
         }
 
         final View dialogView = View.inflate(getContext(), R.layout.dialog_playlist_name, null);
-        EditText nameEdit = dialogView.findViewById(R.id.playlist_name);
+        final EditText nameEdit = dialogView.findViewById(R.id.playlist_name);
         nameEdit.setText(name);
         nameEdit.setSelection(nameEdit.getText().length());
 
@@ -601,7 +601,7 @@ public class LocalPlaylistFragment extends BaseLocalListFragment<List<PlaylistSt
     }
 
     private void updateThumbnailUrl() {
-        String newThumbnailUrl;
+        final String newThumbnailUrl;
 
         if (!itemListAdapter.getItemsList().isEmpty()) {
             newThumbnailUrl = ((PlaylistStreamEntry) itemListAdapter.getItemsList().get(0))
@@ -662,7 +662,7 @@ public class LocalPlaylistFragment extends BaseLocalListFragment<List<PlaylistSt
         }
 
         final List<LocalItem> items = itemListAdapter.getItemsList();
-        List<Long> streamIds = new ArrayList<>(items.size());
+        final List<Long> streamIds = new ArrayList<>(items.size());
         for (final LocalItem item : items) {
             if (item instanceof PlaylistStreamEntry) {
                 streamIds.add(((PlaylistStreamEntry) item).getStreamId());
@@ -815,7 +815,7 @@ public class LocalPlaylistFragment extends BaseLocalListFragment<List<PlaylistSt
         }
 
         final List<LocalItem> infoItems = itemListAdapter.getItemsList();
-        List<StreamInfoItem> streamInfoItems = new ArrayList<>(infoItems.size());
+        final List<StreamInfoItem> streamInfoItems = new ArrayList<>(infoItems.size());
         for (final LocalItem item : infoItems) {
             if (item instanceof PlaylistStreamEntry) {
                 streamInfoItems.add(((PlaylistStreamEntry) item).toStreamInfoItem());

app/src/main/java/org/schabi/newpipe/local/playlist/LocalPlaylistManager.java

@@ -61,7 +61,7 @@ public class LocalPlaylistManager {
                                      final List<StreamEntity> streams,
                                      final int indexOffset) {
 
-        List<PlaylistStreamEntity> joinEntities = new ArrayList<>(streams.size());
+        final List<PlaylistStreamEntity> joinEntities = new ArrayList<>(streams.size());
         final List<Long> streamIds = streamTable.upsertAll(streams);
         for (int index = 0; index < streamIds.size(); index++) {
             joinEntities.add(new PlaylistStreamEntity(playlistId, streamIds.get(index),
@@ -71,7 +71,7 @@ public class LocalPlaylistManager {
     }
 
     public Completable updateJoin(final long playlistId, final List<Long> streamIds) {
-        List<PlaylistStreamEntity> joinEntities = new ArrayList<>(streamIds.size());
+        final List<PlaylistStreamEntity> joinEntities = new ArrayList<>(streamIds.size());
         for (int i = 0; i < streamIds.size(); i++) {
             joinEntities.add(new PlaylistStreamEntity(playlistId, streamIds.get(i), i));
         }
@@ -115,7 +115,7 @@ public class LocalPlaylistManager {
                 .firstElement()
                 .filter(playlistEntities -> !playlistEntities.isEmpty())
                 .map(playlistEntities -> {
-                    PlaylistEntity playlist = playlistEntities.get(0);
+                    final PlaylistEntity playlist = playlistEntities.get(0);
                     if (name != null) {
                         playlist.setName(name);
                     }

app/src/main/java/org/schabi/newpipe/local/playlist/RemotePlaylistManager.java

@@ -42,7 +42,7 @@ public class RemotePlaylistManager {
 
     public Single<Integer> onUpdate(final long playlistId, final PlaylistInfo playlistInfo) {
         return Single.fromCallable(() -> {
-            PlaylistRemoteEntity playlist = new PlaylistRemoteEntity(playlistInfo);
+            final PlaylistRemoteEntity playlist = new PlaylistRemoteEntity(playlistInfo);
             playlist.setUid(playlistId);
             return playlistRemoteTable.update(playlist);
         }).subscribeOn(Schedulers.io());

app/src/main/java/org/schabi/newpipe/local/subscription/SubscriptionsImportFragment.java

@@ -64,7 +64,7 @@ public class SubscriptionsImportFragment extends BaseFragment {
     private Button inputButton;
 
     public static SubscriptionsImportFragment getInstance(final int serviceId) {
-        SubscriptionsImportFragment instance = new SubscriptionsImportFragment();
+        final SubscriptionsImportFragment instance = new SubscriptionsImportFragment();
         instance.setInitialData(serviceId);
         return instance;
     }
@@ -140,7 +140,7 @@ public class SubscriptionsImportFragment extends BaseFragment {
             setInfoText("");
         }
 
-        ActionBar supportActionBar = activity.getSupportActionBar();
+        final ActionBar supportActionBar = activity.getSupportActionBar();
         if (supportActionBar != null) {
             supportActionBar.setDisplayShowTitleEnabled(true);
             setTitle(getString(R.string.import_title));
@@ -206,7 +206,7 @@ public class SubscriptionsImportFragment extends BaseFragment {
                 relatedUrl = extractor.getRelatedUrl();
                 instructionsString = ServiceHelper.getImportInstructions(currentServiceId);
                 return;
-            } catch (ExtractionException ignored) {
+            } catch (final ExtractionException ignored) {
             }
         }
 

app/src/main/java/org/schabi/newpipe/local/subscription/services/ImportExportJsonHelper.java

@@ -86,12 +86,12 @@ public final class ImportExportJsonHelper {
                 eventListener.onSizeReceived(channelsArray.size());
             }
 
-            for (Object o : channelsArray) {
+            for (final Object o : channelsArray) {
                 if (o instanceof JsonObject) {
-                    JsonObject itemObject = (JsonObject) o;
+                    final JsonObject itemObject = (JsonObject) o;
-                    int serviceId = itemObject.getInt(JSON_SERVICE_ID_KEY, 0);
+                    final int serviceId = itemObject.getInt(JSON_SERVICE_ID_KEY, 0);
-                    String url = itemObject.getString(JSON_URL_KEY);
+                    final String url = itemObject.getString(JSON_URL_KEY);
-                    String name = itemObject.getString(JSON_NAME_KEY);
+                    final String name = itemObject.getString(JSON_NAME_KEY);
 
                     if (url != null && name != null && !url.isEmpty() && !name.isEmpty()) {
                         channels.add(new SubscriptionItem(serviceId, url, name));
@@ -101,7 +101,7 @@ public final class ImportExportJsonHelper {
                     }
                 }
             }
-        } catch (Throwable e) {
+        } catch (final Throwable e) {
             throw new InvalidSourceException("Couldn't parse json", e);
         }
 
@@ -117,7 +117,7 @@ public final class ImportExportJsonHelper {
      */
     public static void writeTo(final List<SubscriptionItem> items, final OutputStream out,
                                @Nullable final ImportExportEventListener eventListener) {
-        JsonAppendableWriter writer = JsonWriter.on(out);
+        final JsonAppendableWriter writer = JsonWriter.on(out);
         writeTo(items, writer, eventListener);
         writer.done();
     }
@@ -140,7 +140,7 @@ public final class ImportExportJsonHelper {
         writer.value(JSON_APP_VERSION_INT_KEY, BuildConfig.VERSION_CODE);
 
         writer.array(JSON_SUBSCRIPTIONS_ARRAY_KEY);
-        for (SubscriptionItem item : items) {
+        for (final SubscriptionItem item : items) {
             writer.object();
             writer.value(JSON_SERVICE_ID_KEY, item.getServiceId());
             writer.value(JSON_URL_KEY, item.getUrl());

app/src/main/java/org/schabi/newpipe/local/subscription/services/SubscriptionsExportService.java

@@ -74,7 +74,7 @@ public class SubscriptionsExportService extends BaseImportExportService {
         try {
             outFile = new File(path);
             outputStream = new FileOutputStream(outFile);
-        } catch (FileNotFoundException e) {
+        } catch (final FileNotFoundException e) {
             handleError(e);
             return START_NOT_STICKY;
         }
@@ -109,7 +109,7 @@ public class SubscriptionsExportService extends BaseImportExportService {
                 .map(subscriptionEntities -> {
                     final List<SubscriptionItem> result
                             = new ArrayList<>(subscriptionEntities.size());
-                    for (SubscriptionEntity entity : subscriptionEntities) {
+                    for (final SubscriptionEntity entity : subscriptionEntities) {
                         result.add(new SubscriptionItem(entity.getServiceId(), entity.getUrl(),
                                 entity.getName()));
                     }

app/src/main/java/org/schabi/newpipe/local/subscription/services/SubscriptionsImportService.java

@@ -110,7 +110,7 @@ public class SubscriptionsImportService extends BaseImportExportService {
 
             try {
                 inputStream = new FileInputStream(new File(filePath));
-            } catch (FileNotFoundException e) {
+            } catch (final FileNotFoundException e) {
                 handleError(e);
                 return START_NOT_STICKY;
             }
@@ -187,7 +187,7 @@ public class SubscriptionsImportService extends BaseImportExportService {
                                 .getChannelInfo(subscriptionItem.getServiceId(),
                                         subscriptionItem.getUrl(), true)
                                 .blockingGet());
-                    } catch (Throwable e) {
+                    } catch (final Throwable e) {
                         return Notification.createOnError(e);
                     }
                 })
@@ -239,7 +239,7 @@ public class SubscriptionsImportService extends BaseImportExportService {
     private Consumer<Notification<ChannelInfo>> getNotificationsConsumer() {
         return notification -> {
             if (notification.isOnNext()) {
-                String name = notification.getValue().getName();
+                final String name = notification.getValue().getName();
                 eventListener.onItemCompleted(!TextUtils.isEmpty(name) ? name : "");
             } else if (notification.isOnError()) {
                 final Throwable error = notification.getError();
@@ -260,7 +260,7 @@ public class SubscriptionsImportService extends BaseImportExportService {
     private Function<List<Notification<ChannelInfo>>, List<SubscriptionEntity>> upsertBatch() {
         return notificationList -> {
             final List<ChannelInfo> infoList = new ArrayList<>(notificationList.size());
-            for (Notification<ChannelInfo> n : notificationList) {
+            for (final Notification<ChannelInfo> n : notificationList) {
                 if (n.isOnNext()) {
                     infoList.add(n.getValue());
                 }

app/src/main/java/org/schabi/newpipe/player/BasePlayer.java

@@ -54,7 +54,6 @@ import com.nostra13.universalimageloader.core.ImageLoader;
 import com.nostra13.universalimageloader.core.assist.FailReason;
 import com.nostra13.universalimageloader.core.listener.ImageLoadingListener;
 
-import io.reactivex.android.schedulers.AndroidSchedulers;
 import org.schabi.newpipe.BuildConfig;
 import org.schabi.newpipe.DownloaderImpl;
 import org.schabi.newpipe.R;
@@ -79,6 +78,7 @@ import org.schabi.newpipe.util.SerializedCache;
 import java.io.IOException;
 
 import io.reactivex.Observable;
+import io.reactivex.android.schedulers.AndroidSchedulers;
 import io.reactivex.disposables.CompositeDisposable;
 import io.reactivex.disposables.Disposable;
 import io.reactivex.disposables.SerialDisposable;
@@ -280,7 +280,7 @@ public abstract class BasePlayer implements
 
         // Resolve append intents
         if (intent.getBooleanExtra(APPEND_ONLY, false) && playQueue != null) {
-            int sizeBeforeAppend = playQueue.size();
+            final int sizeBeforeAppend = playQueue.size();
             playQueue.append(queue.getStreams());
 
             if ((intent.getBooleanExtra(SELECT_ON_APPEND, false)
@@ -1460,7 +1460,7 @@ public abstract class BasePlayer implements
             return false;
         }
 
-        Timeline.Window timelineWindow = new Timeline.Window();
+        final Timeline.Window timelineWindow = new Timeline.Window();
         currentTimeline.getWindow(currentWindowIndex, timelineWindow);
         return timelineWindow.getDefaultPositionMs() <= simpleExoPlayer.getCurrentPosition();
     }
@@ -1471,7 +1471,7 @@ public abstract class BasePlayer implements
         }
         try {
             return simpleExoPlayer.isCurrentWindowDynamic();
-        } catch (@NonNull IndexOutOfBoundsException e) {
+        } catch (@NonNull final IndexOutOfBoundsException e) {
             // Why would this even happen =(
             // But lets log it anyway. Save is save
             if (DEBUG) {

app/src/main/java/org/schabi/newpipe/player/ServicePlayerActivity.java

@@ -580,7 +580,7 @@ public abstract class ServicePlayerActivity extends AppCompatActivity
     ////////////////////////////////////////////////////////////////////////////
 
     private void shareUrl(final String subject, final String url) {
-        Intent intent = new Intent(Intent.ACTION_SEND);
+        final Intent intent = new Intent(Intent.ACTION_SEND);
         intent.setType("text/plain");
         intent.putExtra(Intent.EXTRA_SUBJECT, subject);
         intent.putExtra(Intent.EXTRA_TEXT, url);
@@ -734,7 +734,7 @@ public abstract class ServicePlayerActivity extends AppCompatActivity
 
     private void onMaybeMuteChanged() {
         if (menu != null && player != null) {
-            MenuItem item = menu.findItem(R.id.action_mute);
+            final MenuItem item = menu.findItem(R.id.action_mute);
 
             //Change the mute-button item in ActionBar
             //1) Text change:

app/src/main/java/org/schabi/newpipe/player/VideoPlayer.java

@@ -167,7 +167,7 @@ public abstract class VideoPlayer extends BasePlayer
 
     // workaround to match normalized captions like english to English or deutsch to Deutsch
     private static boolean containsCaseInsensitive(final List<String> list, final String toFind) {
-        for (String i : list) {
+        for (final String i : list) {
             if (i.equalsIgnoreCase(toFind)) {
                 return true;
             }
@@ -279,7 +279,7 @@ public abstract class VideoPlayer extends BasePlayer
 
         qualityPopupMenu.getMenu().removeGroup(qualityPopupMenuGroupId);
         for (int i = 0; i < availableStreams.size(); i++) {
-            VideoStream videoStream = availableStreams.get(i);
+            final VideoStream videoStream = availableStreams.get(i);
             qualityPopupMenu.getMenu().add(qualityPopupMenuGroupId, i, Menu.NONE, MediaFormat
                     .getNameById(videoStream.getFormatId()) + " " + videoStream.resolution);
         }
@@ -311,7 +311,7 @@ public abstract class VideoPlayer extends BasePlayer
         }
         captionPopupMenu.getMenu().removeGroup(captionPopupMenuGroupId);
 
-        String userPreferredLanguage = PreferenceManager.getDefaultSharedPreferences(context)
+        final String userPreferredLanguage = PreferenceManager.getDefaultSharedPreferences(context)
                 .getString(context.getString(R.string.caption_user_set_key), null);
         /*
          * only search for autogenerated cc as fallback
@@ -323,7 +323,7 @@ public abstract class VideoPlayer extends BasePlayer
                 && !userPreferredLanguage.contains("(");
 
         // Add option for turning off caption
-        MenuItem captionOffItem = captionPopupMenu.getMenu().add(captionPopupMenuGroupId,
+        final MenuItem captionOffItem = captionPopupMenu.getMenu().add(captionPopupMenuGroupId,
                 0, Menu.NONE, R.string.caption_none);
         captionOffItem.setOnMenuItemClickListener(menuItem -> {
             final int textRendererIndex = getRendererIndex(C.TRACK_TYPE_TEXT);
@@ -339,7 +339,7 @@ public abstract class VideoPlayer extends BasePlayer
         // Add all available captions
         for (int i = 0; i < availableLanguages.size(); i++) {
             final String captionLanguage = availableLanguages.get(i);
-            MenuItem captionItem = captionPopupMenu.getMenu().add(captionPopupMenuGroupId,
+            final MenuItem captionItem = captionPopupMenu.getMenu().add(captionPopupMenuGroupId,
                     i + 1, Menu.NONE, captionLanguage);
             captionItem.setOnMenuItemClickListener(menuItem -> {
                 final int textRendererIndex = getRendererIndex(C.TRACK_TYPE_TEXT);
@@ -579,7 +579,7 @@ public abstract class VideoPlayer extends BasePlayer
                 .getTrackGroups(textRenderer);
 
         // Extract all loaded languages
-        List<String> availableLanguages = new ArrayList<>(textTracks.length);
+        final List<String> availableLanguages = new ArrayList<>(textTracks.length);
         for (int i = 0; i < textTracks.length; i++) {
             final TrackGroup textTrack = textTracks.get(i);
             if (textTrack.length > 0 && textTrack.getFormat(0) != null) {
@@ -729,8 +729,8 @@ public abstract class VideoPlayer extends BasePlayer
             qualityTextView.setText(menuItem.getTitle());
             return true;
         } else if (playbackSpeedPopupMenuGroupId == menuItem.getGroupId()) {
-            int speedIndex = menuItem.getItemId();
+            final int speedIndex = menuItem.getItemId();
-            float speed = PLAYBACK_SPEEDS[speedIndex];
+            final float speed = PLAYBACK_SPEEDS[speedIndex];
 
             setPlaybackSpeed(speed);
             playbackSpeedTextView.setText(formatSpeed(speed));
@@ -921,10 +921,10 @@ public abstract class VideoPlayer extends BasePlayer
             return;
         }
 
-        float scaleFrom = goneOnEnd ? 1f : 1f;
+        final float scaleFrom = goneOnEnd ? 1f : 1f;
-        float scaleTo = goneOnEnd ? 1.8f : 1.4f;
+        final float scaleTo = goneOnEnd ? 1.8f : 1.4f;
-        float alphaFrom = goneOnEnd ? 1f : 0f;
+        final float alphaFrom = goneOnEnd ? 1f : 0f;
-        float alphaTo = goneOnEnd ? 0f : 1f;
+        final float alphaTo = goneOnEnd ? 0f : 1f;
 
 
         controlViewAnimator = ObjectAnimator.ofPropertyValuesHolder(controlAnimationView,

app/src/main/java/org/schabi/newpipe/player/VideoPlayerImpl.java

@@ -320,7 +320,7 @@ public class VideoPlayerImpl extends VideoPlayer
                                      final float captionScale,
                                      @NonNull final CaptionStyleCompat captionStyle) {
         if (popupPlayerSelected()) {
-            float captionRatio = (captionScale - 1.0f) / 5.0f + 1.0f;
+            final float captionRatio = (captionScale - 1.0f) / 5.0f + 1.0f;
             view.setFractionalTextSize(SubtitleView.DEFAULT_TEXT_SIZE_FRACTION * captionRatio);
             view.setApplyEmbeddedStyles(captionStyle.equals(CaptionStyleCompat.DEFAULT));
             view.setStyle(captionStyle);
@@ -717,7 +717,7 @@ public class VideoPlayerImpl extends VideoPlayer
         if (popupPlayerSelected()) {
             setRecovery();
             service.removeViewFromParent();
-            Intent intent = NavigationHelper.getPlayerIntent(
+            final Intent intent = NavigationHelper.getPlayerIntent(
                     service,
                     MainActivity.class,
                     this.getPlayQueue(),
@@ -894,7 +894,7 @@ public class VideoPlayerImpl extends VideoPlayer
         onPause();
         try {
             NavigationHelper.playWithKore(getParentActivity(), Uri.parse(getVideoUrl()));
-        } catch (Exception e) {
+        } catch (final Exception e) {
             if (DEBUG) {
                 Log.i(TAG, "Failed to start kore", e);
             }
@@ -979,9 +979,9 @@ public class VideoPlayerImpl extends VideoPlayer
         if (l != ol || t != ot || r != or || b != ob) {
             // Use smaller value to be consistent between screen orientations
             // (and to make usage easier)
-            int width = r - l;
+            final int width = r - l;
-            int height = b - t;
+            final int height = b - t;
-            int min = Math.min(width, height);
+            final int min = Math.min(width, height);
             maxGestureLength = (int) (min * MAX_GESTURE_LENGTH);
 
             if (DEBUG) {
@@ -995,7 +995,7 @@ public class VideoPlayerImpl extends VideoPlayer
             queueLayout.getLayoutParams().height = height - queueLayout.getTop();
 
             if (popupPlayerSelected()) {
-                float widthDp = Math.abs(r - l) / service.getResources()
+                final float widthDp = Math.abs(r - l) / service.getResources()
                         .getDisplayMetrics().density;
                 final int visibility = widthDp > MINIMUM_SHOW_EXTRA_WIDTH_DP
                         ? View.VISIBLE

app/src/main/java/org/schabi/newpipe/player/event/PlayerGestureListener.java

@@ -227,8 +227,8 @@ public class PlayerGestureListener
 
         isMovingInMain = true;
 
-        boolean acceptAnyArea = isVolumeGestureEnabled != isBrightnessGestureEnabled;
+        final boolean acceptAnyArea = isVolumeGestureEnabled != isBrightnessGestureEnabled;
-        boolean acceptVolumeArea = acceptAnyArea
+        final boolean acceptVolumeArea = acceptAnyArea
                 || initialEvent.getX() > playerImpl.getRootView().getWidth() / 2.0;
 
         if (isVolumeGestureEnabled && acceptVolumeArea) {
@@ -563,13 +563,13 @@ public class PlayerGestureListener
     private boolean handleMultiDrag(final MotionEvent event) {
         if (initPointerDistance != -1 && event.getPointerCount() == 2) {
             // get the movements of the fingers
-            double firstPointerMove = Math.hypot(event.getX(0) - initFirstPointerX,
+            final double firstPointerMove = Math.hypot(event.getX(0) - initFirstPointerX,
                     event.getY(0) - initFirstPointerY);
-            double secPointerMove = Math.hypot(event.getX(1) - initSecPointerX,
+            final double secPointerMove = Math.hypot(event.getX(1) - initSecPointerX,
                     event.getY(1) - initSecPointerY);
 
             // minimum threshold beyond which pinch gesture will work
-            int minimumMove = ViewConfiguration.get(service).getScaledTouchSlop();
+            final int minimumMove = ViewConfiguration.get(service).getScaledTouchSlop();
 
             if (Math.max(firstPointerMove, secPointerMove) > minimumMove) {
                 // calculate current distance between the pointers
@@ -577,9 +577,9 @@ public class PlayerGestureListener
                         Math.hypot(event.getX(0) - event.getX(1),
                                 event.getY(0) - event.getY(1));
 
-                double popupWidth = playerImpl.getPopupWidth();
+                final double popupWidth = playerImpl.getPopupWidth();
                 // change co-ordinates of popup so the center stays at the same position
-                double newWidth = (popupWidth * currentPointerDistance / initPointerDistance);
+                final double newWidth = (popupWidth * currentPointerDistance / initPointerDistance);
                 initPointerDistance = currentPointerDistance;
                 playerImpl.getPopupLayoutParams().x += (popupWidth - newWidth) / 2;
 
@@ -601,7 +601,7 @@ public class PlayerGestureListener
      * */
 
     private int getNavigationBarHeight(final Context context) {
-        int resId = context.getResources()
+        final int resId = context.getResources()
                 .getIdentifier("navigation_bar_height", "dimen", "android");
         if (resId > 0) {
             return context.getResources().getDimensionPixelSize(resId);
@@ -610,7 +610,7 @@ public class PlayerGestureListener
     }
 
     private int getStatusBarHeight(final Context context) {
-        int resId = context.getResources()
+        final int resId = context.getResources()
                 .getIdentifier("status_bar_height", "dimen", "android");
         if (resId > 0) {
             return context.getResources().getDimensionPixelSize(resId);

app/src/main/java/org/schabi/newpipe/player/helper/AudioReactor.java

@@ -133,7 +133,7 @@ public class AudioReactor implements AudioManager.OnAudioFocusChangeListener, An
     }
 
     private void animateAudio(final float from, final float to) {
-        ValueAnimator valueAnimator = new ValueAnimator();
+        final ValueAnimator valueAnimator = new ValueAnimator();
         valueAnimator.setFloatValues(from, to);
         valueAnimator.setDuration(AudioReactor.DUCK_DURATION);
         valueAnimator.addListener(new AnimatorListenerAdapter() {

app/src/main/java/org/schabi/newpipe/player/helper/CacheFactory.java

@@ -80,13 +80,13 @@ import java.io.File;
         }
 
         try {
-            for (File file : cacheDir.listFiles()) {
+            for (final File file : cacheDir.listFiles()) {
                 final String filePath = file.getAbsolutePath();
                 final boolean deleteSuccessful = file.delete();
 
                 Log.d(TAG, "tryDeleteCacheFiles: " + filePath + " deleted = " + deleteSuccessful);
             }
-        } catch (Exception ignored) {
+        } catch (final Exception ignored) {
             Log.e(TAG, "Failed to delete file.", ignored);
         }
     }

app/src/main/java/org/schabi/newpipe/player/helper/LoadController.java

@@ -29,7 +29,7 @@ public class LoadController implements LoadControl {
                            final int optimalPlaybackBufferMs) {
         this.initialPlaybackBufferUs = initialPlaybackBufferMs * 1000;
 
-        DefaultLoadControl.Builder builder = new DefaultLoadControl.Builder();
+        final DefaultLoadControl.Builder builder = new DefaultLoadControl.Builder();
         builder.setBufferDurationsMs(minimumPlaybackbufferMs, optimalPlaybackBufferMs,
                 initialPlaybackBufferMs, initialPlaybackBufferMs);
         internalLoadControl = builder.createDefaultLoadControl();

app/src/main/java/org/schabi/newpipe/player/helper/MediaSessionManager.java

@@ -62,7 +62,7 @@ public class MediaSessionManager {
                         .build()
         );
 
-        MediaStyle mediaStyle = new MediaStyle()
+        final MediaStyle mediaStyle = new MediaStyle()
                 .setMediaSession(mediaSession.getSessionToken());
 
         builder.setStyle(mediaStyle);
@@ -76,7 +76,7 @@ public class MediaSessionManager {
                         .build()
         );
 
-        MediaStyle mediaStyle = new MediaStyle()
+        final MediaStyle mediaStyle = new MediaStyle()
                 .setMediaSession(mediaSession.getSessionToken());
 
         builder.setStyle(mediaStyle);

app/src/main/java/org/schabi/newpipe/player/helper/PlaybackParameterDialog.java

@@ -94,7 +94,7 @@ public class PlaybackParameterDialog extends DialogFragment {
                                                       final double playbackPitch,
                                                       final boolean playbackSkipSilence,
                                                       final Callback callback) {
-        PlaybackParameterDialog dialog = new PlaybackParameterDialog();
+        final PlaybackParameterDialog dialog = new PlaybackParameterDialog();
         dialog.callback = callback;
         dialog.initialTempo = playbackTempo;
         dialog.initialPitch = playbackPitch;
@@ -187,8 +187,8 @@ public class PlaybackParameterDialog extends DialogFragment {
 
     private void setupTempoControl(@NonNull final View rootView) {
         tempoSlider = rootView.findViewById(R.id.tempoSeekbar);
-        TextView tempoMinimumText = rootView.findViewById(R.id.tempoMinimumText);
+        final TextView tempoMinimumText = rootView.findViewById(R.id.tempoMinimumText);
-        TextView tempoMaximumText = rootView.findViewById(R.id.tempoMaximumText);
+        final TextView tempoMaximumText = rootView.findViewById(R.id.tempoMaximumText);
         tempoCurrentText = rootView.findViewById(R.id.tempoCurrentText);
         tempoStepUpText = rootView.findViewById(R.id.tempoStepUp);
         tempoStepDownText = rootView.findViewById(R.id.tempoStepDown);
@@ -212,8 +212,8 @@ public class PlaybackParameterDialog extends DialogFragment {
 
     private void setupPitchControl(@NonNull final View rootView) {
         pitchSlider = rootView.findViewById(R.id.pitchSeekbar);
-        TextView pitchMinimumText = rootView.findViewById(R.id.pitchMinimumText);
+        final TextView pitchMinimumText = rootView.findViewById(R.id.pitchMinimumText);
-        TextView pitchMaximumText = rootView.findViewById(R.id.pitchMaximumText);
+        final TextView pitchMaximumText = rootView.findViewById(R.id.pitchMaximumText);
         pitchCurrentText = rootView.findViewById(R.id.pitchCurrentText);
         pitchStepDownText = rootView.findViewById(R.id.pitchStepDown);
         pitchStepUpText = rootView.findViewById(R.id.pitchStepUp);
@@ -269,12 +269,12 @@ public class PlaybackParameterDialog extends DialogFragment {
     }
 
     private void setupStepSizeSelector(@NonNull final View rootView) {
-        TextView stepSizeOnePercentText = rootView.findViewById(R.id.stepSizeOnePercent);
+        final TextView stepSizeOnePercentText = rootView.findViewById(R.id.stepSizeOnePercent);
-        TextView stepSizeFivePercentText = rootView.findViewById(R.id.stepSizeFivePercent);
+        final TextView stepSizeFivePercentText = rootView.findViewById(R.id.stepSizeFivePercent);
-        TextView stepSizeTenPercentText = rootView.findViewById(R.id.stepSizeTenPercent);
+        final TextView stepSizeTenPercentText = rootView.findViewById(R.id.stepSizeTenPercent);
-        TextView stepSizeTwentyFivePercentText = rootView
+        final TextView stepSizeTwentyFivePercentText = rootView
                 .findViewById(R.id.stepSizeTwentyFivePercent);
-        TextView stepSizeOneHundredPercentText = rootView
+        final TextView stepSizeOneHundredPercentText = rootView
                 .findViewById(R.id.stepSizeOneHundredPercent);
 
         if (stepSizeOnePercentText != null) {

app/src/main/java/org/schabi/newpipe/player/helper/PlayerHelper.java

@@ -76,10 +76,10 @@ public final class PlayerHelper {
     ////////////////////////////////////////////////////////////////////////////
 
     public static String getTimeString(final int milliSeconds) {
-        int seconds = (milliSeconds % 60000) / 1000;
+        final int seconds = (milliSeconds % 60000) / 1000;
-        int minutes = (milliSeconds % 3600000) / 60000;
+        final int minutes = (milliSeconds % 3600000) / 60000;
-        int hours = (milliSeconds % 86400000) / 3600000;
+        final int hours = (milliSeconds % 86400000) / 3600000;
-        int days = (milliSeconds % (86400000 * 7)) / 86400000;
+        final int days = (milliSeconds % (86400000 * 7)) / 86400000;
 
         STRING_BUILDER.setLength(0);
         return days > 0
@@ -405,7 +405,7 @@ public final class PlayerHelper {
 
     private static void setScreenBrightness(@NonNull final Context context,
                                             final float screenBrightness, final long timestamp) {
-        SharedPreferences.Editor editor = getPreferences(context).edit();
+        final SharedPreferences.Editor editor = getPreferences(context).edit();
         editor.putFloat(context.getString(R.string.screen_brightness_key), screenBrightness);
         editor.putLong(context.getString(R.string.screen_brightness_timestamp_key), timestamp);
         editor.apply();
@@ -413,8 +413,8 @@ public final class PlayerHelper {
 
     private static float getScreenBrightness(@NonNull final Context context,
                                              final float screenBrightness) {
-        SharedPreferences sp = getPreferences(context);
+        final SharedPreferences sp = getPreferences(context);
-        long timestamp = sp
+        final long timestamp = sp
                 .getLong(context.getString(R.string.screen_brightness_timestamp_key), 0);
         // Hypothesis: 4h covers a viewing block, e.g. evening.
         // External lightning conditions will change in the next
@@ -441,7 +441,7 @@ public final class PlayerHelper {
 
     private static SinglePlayQueue getAutoQueuedSinglePlayQueue(
             final StreamInfoItem streamInfoItem) {
-        SinglePlayQueue singlePlayQueue = new SinglePlayQueue(streamInfoItem);
+        final SinglePlayQueue singlePlayQueue = new SinglePlayQueue(streamInfoItem);
         singlePlayQueue.getItem().setAutoQueued(true);
         return singlePlayQueue;
     }

app/src/main/java/org/schabi/newpipe/player/mediasession/PlayQueueNavigator.java

@@ -87,13 +87,13 @@ public class PlayQueueNavigator implements MediaSessionConnector.QueueNavigator
         }
 
         // Yes this is almost a copypasta, got a problem with that? =\
-        int windowCount = callback.getQueueSize();
+        final int windowCount = callback.getQueueSize();
-        int currentWindowIndex = callback.getCurrentPlayingIndex();
+        final int currentWindowIndex = callback.getCurrentPlayingIndex();
-        int queueSize = Math.min(maxQueueSize, windowCount);
+        final int queueSize = Math.min(maxQueueSize, windowCount);
-        int startIndex = Util.constrainValue(currentWindowIndex - ((queueSize - 1) / 2), 0,
+        final int startIndex = Util.constrainValue(currentWindowIndex - ((queueSize - 1) / 2), 0,
                 windowCount - queueSize);
 
-        List<MediaSessionCompat.QueueItem> queue = new ArrayList<>();
+        final List<MediaSessionCompat.QueueItem> queue = new ArrayList<>();
         for (int i = startIndex; i < startIndex + queueSize; i++) {
             queue.add(new MediaSessionCompat.QueueItem(callback.getQueueMetadata(i), i));
         }

app/src/main/java/org/schabi/newpipe/player/playback/BasePlayerMediaSession.java

@@ -57,13 +57,14 @@ public class BasePlayerMediaSession implements MediaSessionCallback {
         }
 
         final PlayQueueItem item = player.getPlayQueue().getItem(index);
-        MediaDescriptionCompat.Builder descriptionBuilder = new MediaDescriptionCompat.Builder()
+        final MediaDescriptionCompat.Builder descriptionBuilder
+                = new MediaDescriptionCompat.Builder()
                 .setMediaId(String.valueOf(index))
                 .setTitle(item.getTitle())
                 .setSubtitle(item.getUploader());
 
         // set additional metadata for A2DP/AVRCP
-        Bundle additionalMetadata = new Bundle();
+        final Bundle additionalMetadata = new Bundle();
         additionalMetadata.putString(MediaMetadataCompat.METADATA_KEY_TITLE, item.getTitle());
         additionalMetadata.putString(MediaMetadataCompat.METADATA_KEY_ARTIST, item.getUploader());
         additionalMetadata

app/src/main/java/org/schabi/newpipe/player/playback/CustomTrackSelector.java

@@ -60,14 +60,14 @@ public class CustomTrackSelector extends DefaultTrackSelector {
         TextTrackScore selectedTrackScore = null;
 
         for (int groupIndex = 0; groupIndex < groups.length; groupIndex++) {
-            TrackGroup trackGroup = groups.get(groupIndex);
+            final TrackGroup trackGroup = groups.get(groupIndex);
-            @Capabilities int[] trackFormatSupport = formatSupport[groupIndex];
+            @Capabilities final int[] trackFormatSupport = formatSupport[groupIndex];
 
             for (int trackIndex = 0; trackIndex < trackGroup.length; trackIndex++) {
                 if (isSupported(trackFormatSupport[trackIndex],
                         params.exceedRendererCapabilitiesIfNecessary)) {
-                    Format format = trackGroup.getFormat(trackIndex);
+                    final Format format = trackGroup.getFormat(trackIndex);
-                    TextTrackScore trackScore = new TextTrackScore(format, params,
+                    final TextTrackScore trackScore = new TextTrackScore(format, params,
                             trackFormatSupport[trackIndex], selectedAudioLanguage);
 
                     if (formatHasLanguage(format, preferredTextLanguage)) {

app/src/main/java/org/schabi/newpipe/player/playqueue/AbstractInfoPlayQueue.java

@@ -129,7 +129,7 @@ abstract class AbstractInfoPlayQueue<T extends ListInfo, U extends InfoItem> ext
     }
 
     private static List<PlayQueueItem> extractListItems(final List<StreamInfoItem> infos) {
-        List<PlayQueueItem> result = new ArrayList<>();
+        final List<PlayQueueItem> result = new ArrayList<>();
         for (final InfoItem stream : infos) {
             if (stream instanceof StreamInfoItem) {
                 result.add(new PlayQueueItem((StreamInfoItem) stream));

app/src/main/java/org/schabi/newpipe/player/playqueue/SinglePlayQueue.java

@@ -26,7 +26,7 @@ public final class SinglePlayQueue extends PlayQueue {
     }
 
     private static List<PlayQueueItem> playQueueItemsOf(final List<StreamInfoItem> items) {
-        List<PlayQueueItem> playQueueItems = new ArrayList<>(items.size());
+        final List<PlayQueueItem> playQueueItems = new ArrayList<>(items.size());
         for (final StreamInfoItem item : items) {
             playQueueItems.add(new PlayQueueItem(item));
         }

app/src/main/java/org/schabi/newpipe/player/resolver/VideoPlaybackResolver.java

@@ -52,7 +52,7 @@ public class VideoPlaybackResolver implements PlaybackResolver {
             return liveSource;
         }
 
-        List<MediaSource> mediaSources = new ArrayList<>();
+        final List<MediaSource> mediaSources = new ArrayList<>();
 
         // Create video stream source
         final List<VideoStream> videos = ListHelper.getSortedStreamVideosList(context,

app/src/main/java/org/schabi/newpipe/report/ErrorActivity.java

@@ -112,9 +112,9 @@ public class ErrorActivity extends AppCompatActivity {
 
     private static void startErrorActivity(final Class returnActivity, final Context context,
                                            final ErrorInfo errorInfo, final List<Throwable> el) {
-        ActivityCommunicator ac = ActivityCommunicator.getCommunicator();
+        final ActivityCommunicator ac = ActivityCommunicator.getCommunicator();
         ac.setReturnActivity(returnActivity);
-        Intent intent = new Intent(context, ErrorActivity.class);
+        final Intent intent = new Intent(context, ErrorActivity.class);
         intent.putExtra(ERROR_INFO, errorInfo);
         intent.putExtra(ERROR_LIST, elToSl(el));
         intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
@@ -154,9 +154,9 @@ public class ErrorActivity extends AppCompatActivity {
 
     public static void reportError(final Context context, final CrashReportData report,
                                    final ErrorInfo errorInfo) {
-        String[] el = new String[]{report.getString(ReportField.STACK_TRACE)};
+        final String[] el = new String[]{report.getString(ReportField.STACK_TRACE)};
 
-        Intent intent = new Intent(context, ErrorActivity.class);
+        final Intent intent = new Intent(context, ErrorActivity.class);
         intent.putExtra(ERROR_INFO, errorInfo);
         intent.putExtra(ERROR_LIST, el);
         intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
@@ -172,7 +172,7 @@ public class ErrorActivity extends AppCompatActivity {
 
     // errorList to StringList
     private static String[] elToSl(final List<Throwable> stackTraces) {
-        String[] out = new String[stackTraces.size()];
+        final String[] out = new String[stackTraces.size()];
         for (int i = 0; i < stackTraces.size(); i++) {
             out[i] = getStackTrace(stackTraces.get(i));
         }
@@ -186,12 +186,12 @@ public class ErrorActivity extends AppCompatActivity {
         ThemeHelper.setTheme(this);
         setContentView(R.layout.activity_error);
 
-        Intent intent = getIntent();
+        final Intent intent = getIntent();
 
-        Toolbar toolbar = findViewById(R.id.toolbar);
+        final Toolbar toolbar = findViewById(R.id.toolbar);
         setSupportActionBar(toolbar);
 
-        ActionBar actionBar = getSupportActionBar();
+        final ActionBar actionBar = getSupportActionBar();
         if (actionBar != null) {
             actionBar.setDisplayHomeAsUpEnabled(true);
             actionBar.setTitle(R.string.error_report_title);
@@ -203,11 +203,11 @@ public class ErrorActivity extends AppCompatActivity {
         final Button reportGithubButton = findViewById(R.id.errorReportGitHubButton);
 
         userCommentBox = findViewById(R.id.errorCommentBox);
-        TextView errorView = findViewById(R.id.errorView);
+        final TextView errorView = findViewById(R.id.errorView);
-        TextView infoView = findViewById(R.id.errorInfosView);
+        final TextView infoView = findViewById(R.id.errorInfosView);
-        TextView errorMessageView = findViewById(R.id.errorMessageView);
+        final TextView errorMessageView = findViewById(R.id.errorMessageView);
 
-        ActivityCommunicator ac = ActivityCommunicator.getCommunicator();
+        final ActivityCommunicator ac = ActivityCommunicator.getCommunicator();
         returnActivity = ac.getReturnActivity();
         errorInfo = intent.getParcelableExtra(ERROR_INFO);
         errorList = intent.getStringArrayExtra(ERROR_LIST);
@@ -242,27 +242,27 @@ public class ErrorActivity extends AppCompatActivity {
         errorView.setText(formErrorText(errorList));
 
         // print stack trace once again for debugging:
-        for (String e : errorList) {
+        for (final String e : errorList) {
             Log.e(TAG, e);
         }
     }
 
     @Override
     public boolean onCreateOptionsMenu(final Menu menu) {
-        MenuInflater inflater = getMenuInflater();
+        final MenuInflater inflater = getMenuInflater();
         inflater.inflate(R.menu.error_menu, menu);
         return true;
     }
 
     @Override
     public boolean onOptionsItemSelected(final MenuItem item) {
-        int id = item.getItemId();
+        final int id = item.getItemId();
         switch (id) {
             case android.R.id.home:
                 goToReturnActivity();
                 break;
             case R.id.menu_item_share_error:
-                Intent intent = new Intent();
+                final Intent intent = new Intent();
                 intent.setAction(Intent.ACTION_SEND);
                 intent.putExtra(Intent.EXTRA_TEXT, buildJson());
                 intent.setType("text/plain");
@@ -304,9 +304,9 @@ public class ErrorActivity extends AppCompatActivity {
     }
 
     private String formErrorText(final String[] el) {
-        StringBuilder text = new StringBuilder();
+        final StringBuilder text = new StringBuilder();
         if (el != null) {
-            for (String e : el) {
+            for (final String e : el) {
                 text.append("-------------------------------------\n").append(e);
             }
         }
@@ -334,19 +334,19 @@ public class ErrorActivity extends AppCompatActivity {
     }
 
     private void goToReturnActivity() {
-        Class<? extends Activity> checkedReturnActivity = getReturnActivity(returnActivity);
+        final Class<? extends Activity> checkedReturnActivity = getReturnActivity(returnActivity);
         if (checkedReturnActivity == null) {
             super.onBackPressed();
         } else {
-            Intent intent = new Intent(this, checkedReturnActivity);
+            final Intent intent = new Intent(this, checkedReturnActivity);
             intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
             NavUtils.navigateUpTo(this, intent);
         }
     }
 
     private void buildInfo(final ErrorInfo info) {
-        TextView infoLabelView = findViewById(R.id.errorInfoLabelsView);
+        final TextView infoLabelView = findViewById(R.id.errorInfoLabelsView);
-        TextView infoView = findViewById(R.id.errorInfosView);
+        final TextView infoView = findViewById(R.id.errorInfosView);
         String text = "";
 
         infoLabelView.setText(getString(R.string.info_labels).replace("\\n", "\n"));
@@ -383,7 +383,7 @@ public class ErrorActivity extends AppCompatActivity {
                     .value("user_comment", userCommentBox.getText().toString())
                     .end()
                     .done();
-        } catch (Throwable e) {
+        } catch (final Throwable e) {
             Log.e(TAG, "Error while erroring: Could not build json");
             e.printStackTrace();
         }
@@ -441,7 +441,7 @@ public class ErrorActivity extends AppCompatActivity {
             }
             htmlErrorReport.append("<hr>\n");
             return htmlErrorReport.toString();
-        } catch (Throwable e) {
+        } catch (final Throwable e) {
             Log.e(TAG, "Error while erroring: Could not build markdown");
             e.printStackTrace();
             return "";
@@ -478,7 +478,7 @@ public class ErrorActivity extends AppCompatActivity {
 
     private void addGuruMeditation() {
         //just an easter egg
-        TextView sorryView = findViewById(R.id.errorSorryView);
+        final TextView sorryView = findViewById(R.id.errorSorryView);
         String text = sorryView.getText().toString();
         text += "\n" + getString(R.string.guru_meditation);
         sorryView.setText(text);
@@ -491,7 +491,7 @@ public class ErrorActivity extends AppCompatActivity {
     }
 
     public String getCurrentTimeStamp() {
-        SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm");
+        final SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm");
         df.setTimeZone(TimeZone.getTimeZone("GMT"));
         return df.format(new Date());
     }

app/src/main/java/org/schabi/newpipe/settings/AppearanceSettingsFragment.java

@@ -42,7 +42,7 @@ public class AppearanceSettingsFragment extends BasePreferenceFragment {
     @Override
     public void onCreate(@Nullable final Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
-        String themeKey = getString(R.string.theme_key);
+        final String themeKey = getString(R.string.theme_key);
         startThemeKey = defaultPreferences
                 .getString(themeKey, getString(R.string.default_theme_value));
         findPreference(themeKey).setOnPreferenceChangeListener(themePreferenceChange);
@@ -64,7 +64,7 @@ public class AppearanceSettingsFragment extends BasePreferenceFragment {
         if (preference.getKey().equals(captionSettingsKey) && CAPTIONING_SETTINGS_ACCESSIBLE) {
             try {
                 startActivity(new Intent(Settings.ACTION_CAPTIONING_SETTINGS));
-            } catch (ActivityNotFoundException e) {
+            } catch (final ActivityNotFoundException e) {
                 Toast.makeText(getActivity(), R.string.general_error, Toast.LENGTH_SHORT).show();
             }
         }

app/src/main/java/org/schabi/newpipe/settings/BasePreferenceFragment.java

@@ -39,7 +39,7 @@ public abstract class BasePreferenceFragment extends PreferenceFragmentCompat {
 
     private void updateTitle() {
         if (getActivity() instanceof AppCompatActivity) {
-            ActionBar actionBar = ((AppCompatActivity) getActivity()).getSupportActionBar();
+            final ActionBar actionBar = ((AppCompatActivity) getActivity()).getSupportActionBar();
             if (actionBar != null) {
                 actionBar.setTitle(getPreferenceScreen().getTitle());
             }

app/src/main/java/org/schabi/newpipe/settings/ContentSettingsFragment.java

@@ -32,7 +32,6 @@ import org.schabi.newpipe.util.ZipHelper;
 import java.io.BufferedOutputStream;
 import java.io.File;
 import java.io.FileInputStream;
-import java.io.FileNotFoundException;
 import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.ObjectInputStream;
@@ -91,7 +90,7 @@ public class ContentSettingsFragment extends BasePreferenceFragment {
         }
 
         if (preference.getKey().equals(youtubeRestrictedModeEnabledKey)) {
-            Context context = getContext();
+            final Context context = getContext();
             if (context != null) {
                 DownloaderImpl.getInstance().updateYoutubeRestrictedModeCookies(context);
             } else {
@@ -105,7 +104,7 @@ public class ContentSettingsFragment extends BasePreferenceFragment {
     @Override
     public void onCreatePreferences(final Bundle savedInstanceState, final String rootKey) {
 
-        String homeDir = getActivity().getApplicationInfo().dataDir;
+        final String homeDir = getActivity().getApplicationInfo().dataDir;
         databasesDir = new File(homeDir + "/databases");
         newpipeDb = new File(homeDir + "/databases/newpipe.db");
         newpipeDbJournal = new File(homeDir + "/databases/newpipe.db-journal");
@@ -117,9 +116,9 @@ public class ContentSettingsFragment extends BasePreferenceFragment {
 
         addPreferencesFromResource(R.xml.content_settings);
 
-        Preference importDataPreference = findPreference(getString(R.string.import_data));
+        final Preference importDataPreference = findPreference(getString(R.string.import_data));
         importDataPreference.setOnPreferenceClickListener((Preference p) -> {
-            Intent i = new Intent(getActivity(), FilePickerActivityHelper.class)
+            final Intent i = new Intent(getActivity(), FilePickerActivityHelper.class)
                     .putExtra(FilePickerActivityHelper.EXTRA_ALLOW_MULTIPLE, false)
                     .putExtra(FilePickerActivityHelper.EXTRA_ALLOW_CREATE_DIR, false)
                     .putExtra(FilePickerActivityHelper.EXTRA_MODE,
@@ -128,9 +127,9 @@ public class ContentSettingsFragment extends BasePreferenceFragment {
             return true;
         });
 
-        Preference exportDataPreference = findPreference(getString(R.string.export_data));
+        final Preference exportDataPreference = findPreference(getString(R.string.export_data));
         exportDataPreference.setOnPreferenceClickListener((Preference p) -> {
-            Intent i = new Intent(getActivity(), FilePickerActivityHelper.class)
+            final Intent i = new Intent(getActivity(), FilePickerActivityHelper.class)
                     .putExtra(FilePickerActivityHelper.EXTRA_ALLOW_MULTIPLE, false)
                     .putExtra(FilePickerActivityHelper.EXTRA_ALLOW_CREATE_DIR, true)
                     .putExtra(FilePickerActivityHelper.EXTRA_MODE,
@@ -175,12 +174,12 @@ public class ContentSettingsFragment extends BasePreferenceFragment {
 
         if ((requestCode == REQUEST_IMPORT_PATH || requestCode == REQUEST_EXPORT_PATH)
                 && resultCode == Activity.RESULT_OK && data.getData() != null) {
-            String path = Utils.getFileForUri(data.getData()).getAbsolutePath();
+            final String path = Utils.getFileForUri(data.getData()).getAbsolutePath();
             if (requestCode == REQUEST_EXPORT_PATH) {
-                SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd_HHmmss", Locale.US);
+                final SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd_HHmmss", Locale.US);
                 exportDatabase(path + "/NewPipeData-" + sdf.format(new Date()) + ".zip");
             } else {
-                AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
+                final AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
                 builder.setMessage(R.string.override_current_data)
                         .setPositiveButton(getString(R.string.finish),
                                 (DialogInterface d, int id) -> importDatabase(path))
@@ -196,7 +195,7 @@ public class ContentSettingsFragment extends BasePreferenceFragment {
             //checkpoint before export
             NewPipeDatabase.checkpoint();
 
-            ZipOutputStream outZip = new ZipOutputStream(
+            final ZipOutputStream outZip = new ZipOutputStream(
                     new BufferedOutputStream(
                             new FileOutputStream(path)));
             ZipHelper.addFileToZip(outZip, newpipeDb.getPath(), "newpipe.db");
@@ -208,7 +207,7 @@ public class ContentSettingsFragment extends BasePreferenceFragment {
 
             Toast.makeText(getContext(), R.string.export_complete_toast, Toast.LENGTH_SHORT)
                     .show();
-        } catch (Exception e) {
+        } catch (final Exception e) {
             onError(e);
         }
     }
@@ -217,12 +216,11 @@ public class ContentSettingsFragment extends BasePreferenceFragment {
         ObjectOutputStream output = null;
         try {
             output = new ObjectOutputStream(new FileOutputStream(dst));
-            SharedPreferences pref = PreferenceManager.getDefaultSharedPreferences(getContext());
+            final SharedPreferences pref
+                    = PreferenceManager.getDefaultSharedPreferences(getContext());
             output.writeObject(pref.getAll());
 
-        } catch (FileNotFoundException e) {
+        } catch (final IOException e) {
-            e.printStackTrace();
-        } catch (IOException e) {
             e.printStackTrace();
         } finally {
             try {
@@ -230,7 +228,7 @@ public class ContentSettingsFragment extends BasePreferenceFragment {
                     output.flush();
                     output.close();
                 }
-            } catch (IOException ex) {
+            } catch (final IOException ex) {
                 ex.printStackTrace();
             }
         }
@@ -241,14 +239,14 @@ public class ContentSettingsFragment extends BasePreferenceFragment {
         ZipFile zipFile = null;
         try {
             zipFile = new ZipFile(filePath);
-        } catch (IOException ioe) {
+        } catch (final IOException ioe) {
             Toast.makeText(getContext(), R.string.no_valid_zip_file, Toast.LENGTH_SHORT)
                     .show();
             return;
         } finally {
             try {
                 zipFile.close();
-            } catch (Exception ignored) {
+            } catch (final Exception ignored) {
             }
         }
 
@@ -272,7 +270,7 @@ public class ContentSettingsFragment extends BasePreferenceFragment {
             //If settings file exist, ask if it should be imported.
             if (ZipHelper.extractFileFromZip(filePath, newpipeSettings.getPath(),
                     "newpipe.settings")) {
-                AlertDialog.Builder alert = new AlertDialog.Builder(getContext());
+                final AlertDialog.Builder alert = new AlertDialog.Builder(getContext());
                 alert.setTitle(R.string.import_settings);
 
                 alert.setNegativeButton(android.R.string.no, (dialog, which) -> {
@@ -291,7 +289,7 @@ public class ContentSettingsFragment extends BasePreferenceFragment {
                 // restart app to properly load db
                 System.exit(0);
             }
-        } catch (Exception e) {
+        } catch (final Exception e) {
             onError(e);
         }
     }
@@ -300,13 +298,13 @@ public class ContentSettingsFragment extends BasePreferenceFragment {
         ObjectInputStream input = null;
         try {
             input = new ObjectInputStream(new FileInputStream(src));
-            SharedPreferences.Editor prefEdit = PreferenceManager
+            final SharedPreferences.Editor prefEdit = PreferenceManager
                     .getDefaultSharedPreferences(getContext()).edit();
             prefEdit.clear();
-            Map<String, ?> entries = (Map<String, ?>) input.readObject();
+            final Map<String, ?> entries = (Map<String, ?>) input.readObject();
-            for (Map.Entry<String, ?> entry : entries.entrySet()) {
+            for (final Map.Entry<String, ?> entry : entries.entrySet()) {
-                Object v = entry.getValue();
+                final Object v = entry.getValue();
-                String key = entry.getKey();
+                final String key = entry.getKey();
 
                 if (v instanceof Boolean) {
                     prefEdit.putBoolean(key, (Boolean) v);
@@ -321,18 +319,14 @@ public class ContentSettingsFragment extends BasePreferenceFragment {
                 }
             }
             prefEdit.commit();
-        } catch (FileNotFoundException e) {
+        } catch (final IOException | ClassNotFoundException e) {
-            e.printStackTrace();
-        } catch (IOException e) {
-            e.printStackTrace();
-        } catch (ClassNotFoundException e) {
             e.printStackTrace();
         } finally {
             try {
                 if (input != null) {
                     input.close();
                 }
-            } catch (IOException ex) {
+            } catch (final IOException ex) {
                 ex.printStackTrace();
             }
         }

app/src/main/java/org/schabi/newpipe/settings/DownloadSettingsFragment.java

@@ -120,7 +120,7 @@ public class DownloadSettingsFragment extends BasePreferenceFragment {
 
         try {
             rawUri = URLDecoder.decode(rawUri, StandardCharsets.UTF_8.name());
-        } catch (UnsupportedEncodingException e) {
+        } catch (final UnsupportedEncodingException e) {
             // nothing to do
         }
 
@@ -132,7 +132,7 @@ public class DownloadSettingsFragment extends BasePreferenceFragment {
     }
 
     private boolean hasInvalidPath(final String prefKey) {
-        String value = defaultPreferences.getString(prefKey, null);
+        final String value = defaultPreferences.getString(prefKey, null);
         return value == null || value.isEmpty();
     }
 
@@ -152,20 +152,20 @@ public class DownloadSettingsFragment extends BasePreferenceFragment {
         }
 
         try {
-            Uri uri = Uri.parse(oldPath);
+            final Uri uri = Uri.parse(oldPath);
 
             context.getContentResolver()
                     .releasePersistableUriPermission(uri, StoredDirectoryHelper.PERMISSION_FLAGS);
             context.revokeUriPermission(uri, StoredDirectoryHelper.PERMISSION_FLAGS);
 
             Log.i(TAG, "Revoke old path permissions success on " + oldPath);
-        } catch (Exception err) {
+        } catch (final Exception err) {
             Log.e(TAG, "Error revoking old path permissions on " + oldPath, err);
         }
     }
 
     private void showMessageDialog(@StringRes final int title, @StringRes final int message) {
-        AlertDialog.Builder msg = new AlertDialog.Builder(ctx);
+        final AlertDialog.Builder msg = new AlertDialog.Builder(ctx);
         msg.setTitle(title);
         msg.setMessage(message);
         msg.setPositiveButton(getString(R.string.finish), null);
@@ -179,8 +179,8 @@ public class DownloadSettingsFragment extends BasePreferenceFragment {
                     + "preference = [" + preference + "]");
         }
 
-        String key = preference.getKey();
+        final String key = preference.getKey();
-        int request;
+        final int request;
 
         if (key.equals(storageUseSafPreference)) {
             Toast.makeText(getContext(), R.string.download_choose_new_path,
@@ -194,7 +194,7 @@ public class DownloadSettingsFragment extends BasePreferenceFragment {
             return super.onPreferenceTreeClick(preference);
         }
 
-        Intent i;
+        final Intent i;
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP
                 && NewPipeSettings.useStorageAccessFramework(ctx)) {
             i = new Intent(Intent.ACTION_OPEN_DOCUMENT_TREE)
@@ -229,7 +229,7 @@ public class DownloadSettingsFragment extends BasePreferenceFragment {
             return;
         }
 
-        String key;
+        final String key;
         if (requestCode == REQUEST_DOWNLOAD_VIDEO_PATH) {
             key = downloadPathVideoPreference;
         } else if (requestCode == REQUEST_DOWNLOAD_AUDIO_PATH) {
@@ -262,19 +262,20 @@ public class DownloadSettingsFragment extends BasePreferenceFragment {
                 context.grantUriPermission(context.getPackageName(), uri,
                         StoredDirectoryHelper.PERMISSION_FLAGS);
 
-                StoredDirectoryHelper mainStorage = new StoredDirectoryHelper(context, uri, null);
+                final StoredDirectoryHelper mainStorage
+                        = new StoredDirectoryHelper(context, uri, null);
                 Log.i(TAG, "Acquiring tree success from " + uri.toString());
 
                 if (!mainStorage.canWrite()) {
                     throw new IOException("No write permissions on " + uri.toString());
                 }
-            } catch (IOException err) {
+            } catch (final IOException err) {
                 Log.e(TAG, "Error acquiring tree from " + uri.toString(), err);
                 showMessageDialog(R.string.general_error, R.string.no_available_dir);
                 return;
             }
         } else {
-            File target = Utils.getFileForUri(uri);
+            final File target = Utils.getFileForUri(uri);
             if (!target.canWrite()) {
                 showMessageDialog(R.string.download_to_sdcard_error_title,
                         R.string.download_to_sdcard_error_message);

app/src/main/java/org/schabi/newpipe/settings/NewPipeSettings.java

@@ -60,14 +60,14 @@ public final class NewPipeSettings {
 
     private static void getDir(final Context context, final int keyID,
                                final String defaultDirectoryName) {
-        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
+        final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
         final String key = context.getString(keyID);
-        String downloadPath = prefs.getString(key, null);
+        final String downloadPath = prefs.getString(key, null);
         if ((downloadPath != null) && (!downloadPath.isEmpty())) {
             return;
         }
 
-        SharedPreferences.Editor spEditor = prefs.edit();
+        final SharedPreferences.Editor spEditor = prefs.edit();
         spEditor.putString(key, getNewPipeChildFolderPathForDir(getDir(defaultDirectoryName)));
         spEditor.apply();
     }

app/src/main/java/org/schabi/newpipe/settings/PeertubeInstanceListFragment.java

@@ -96,16 +96,16 @@ public class PeertubeInstanceListFragment extends Fragment {
     }
 
     private void initViews(@NonNull final View rootView) {
-        TextView instanceHelpTV = rootView.findViewById(R.id.instanceHelpTV);
+        final TextView instanceHelpTV = rootView.findViewById(R.id.instanceHelpTV);
         instanceHelpTV.setText(getString(R.string.peertube_instance_url_help,
                 getString(R.string.peertube_instance_list_url)));
 
         initButton(rootView);
 
-        RecyclerView listInstances = rootView.findViewById(R.id.instances);
+        final RecyclerView listInstances = rootView.findViewById(R.id.instances);
         listInstances.setLayoutManager(new LinearLayoutManager(requireContext()));
 
-        ItemTouchHelper itemTouchHelper = new ItemTouchHelper(getItemTouchCallback());
+        final ItemTouchHelper itemTouchHelper = new ItemTouchHelper(getItemTouchCallback());
         itemTouchHelper.attachToRecyclerView(listInstances);
 
         instanceListAdapter = new InstanceListAdapter(requireContext(), itemTouchHelper);
@@ -178,7 +178,7 @@ public class PeertubeInstanceListFragment extends Fragment {
 
     private void updateTitle() {
         if (getActivity() instanceof AppCompatActivity) {
-            ActionBar actionBar = ((AppCompatActivity) getActivity()).getSupportActionBar();
+            final ActionBar actionBar = ((AppCompatActivity) getActivity()).getSupportActionBar();
             if (actionBar != null) {
                 actionBar.setTitle(R.string.peertube_instance_url_title);
             }
@@ -186,14 +186,14 @@ public class PeertubeInstanceListFragment extends Fragment {
     }
 
     private void saveChanges() {
-        JsonStringWriter jsonWriter = JsonWriter.string().object().array("instances");
+        final JsonStringWriter jsonWriter = JsonWriter.string().object().array("instances");
-        for (PeertubeInstance instance : instanceList) {
+        for (final PeertubeInstance instance : instanceList) {
             jsonWriter.object();
             jsonWriter.value("name", instance.getName());
             jsonWriter.value("url", instance.getUrl());
             jsonWriter.end();
         }
-        String jsonToSave = jsonWriter.end().end().done();
+        final String jsonToSave = jsonWriter.end().end().done();
         sharedPreferences.edit().putString(savedInstanceListKey, jsonToSave).apply();
     }
 
@@ -222,12 +222,12 @@ public class PeertubeInstanceListFragment extends Fragment {
         final EditText urlET = new EditText(c);
         urlET.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_URI);
         urlET.setHint(R.string.peertube_instance_add_help);
-        AlertDialog dialog = new AlertDialog.Builder(c)
+        final AlertDialog dialog = new AlertDialog.Builder(c)
                 .setTitle(R.string.peertube_instance_add_title)
                 .setIcon(R.drawable.place_holder_peertube)
                 .setNegativeButton(R.string.cancel, null)
                 .setPositiveButton(R.string.finish, (dialog1, which) -> {
-                    String url = urlET.getText().toString();
+                    final String url = urlET.getText().toString();
                     addInstance(url);
                 })
                 .create();
@@ -236,13 +236,13 @@ public class PeertubeInstanceListFragment extends Fragment {
     }
 
     private void addInstance(final String url) {
-        String cleanUrl = cleanUrl(url);
+        final String cleanUrl = cleanUrl(url);
         if (cleanUrl == null) {
             return;
         }
         progressBar.setVisibility(View.VISIBLE);
-        Disposable disposable = Single.fromCallable(() -> {
+        final Disposable disposable = Single.fromCallable(() -> {
-            PeertubeInstance instance = new PeertubeInstance(cleanUrl);
+            final PeertubeInstance instance = new PeertubeInstance(cleanUrl);
             instance.fetchInstanceMetaData();
             return instance;
         }).subscribeOn(Schedulers.io()).observeOn(AndroidSchedulers.mainThread())
@@ -273,7 +273,7 @@ public class PeertubeInstanceListFragment extends Fragment {
             return null;
         }
         // only allow if not already exists
-        for (PeertubeInstance instance : instanceList) {
+        for (final PeertubeInstance instance : instanceList) {
             if (instance.getUrl().equals(cleanUrl)) {
                 Toast.makeText(getActivity(), R.string.peertube_instance_add_exists,
                         Toast.LENGTH_SHORT).show();
@@ -331,7 +331,7 @@ public class PeertubeInstanceListFragment extends Fragment {
 
             @Override
             public void onSwiped(final RecyclerView.ViewHolder viewHolder, final int swipeDir) {
-                int position = viewHolder.getAdapterPosition();
+                final int position = viewHolder.getAdapterPosition();
                 // do not allow swiping the selected instance
                 if (instanceList.get(position).getUrl().equals(selectedInstance.getUrl())) {
                     instanceListAdapter.notifyItemChanged(position);
@@ -372,7 +372,7 @@ public class PeertubeInstanceListFragment extends Fragment {
         @Override
         public InstanceListAdapter.TabViewHolder onCreateViewHolder(@NonNull final ViewGroup parent,
                                                                     final int viewType) {
-            View view = inflater.inflate(R.layout.item_instance, parent, false);
+            final View view = inflater.inflate(R.layout.item_instance, parent, false);
             return new InstanceListAdapter.TabViewHolder(view);
         }
 

app/src/main/java/org/schabi/newpipe/settings/SelectChannelFragment.java

@@ -94,10 +94,10 @@ public class SelectChannelFragment extends DialogFragment {
     @Override
     public View onCreateView(@NonNull final LayoutInflater inflater, final ViewGroup container,
                              final Bundle savedInstanceState) {
-        View v = inflater.inflate(R.layout.select_channel_fragment, container, false);
+        final View v = inflater.inflate(R.layout.select_channel_fragment, container, false);
         recyclerView = v.findViewById(R.id.items_list);
         recyclerView.setLayoutManager(new LinearLayoutManager(getContext()));
-        SelectChannelAdapter channelAdapter = new SelectChannelAdapter();
+        final SelectChannelAdapter channelAdapter = new SelectChannelAdapter();
         recyclerView.setAdapter(channelAdapter);
 
         progressBar = v.findViewById(R.id.progressBar);
@@ -107,7 +107,7 @@ public class SelectChannelFragment extends DialogFragment {
         emptyView.setVisibility(View.GONE);
 
 
-        SubscriptionManager subscriptionManager = new SubscriptionManager(getContext());
+        final SubscriptionManager subscriptionManager = new SubscriptionManager(getContext());
         subscriptionManager.subscriptions().toObservable()
                 .subscribeOn(Schedulers.io())
                 .observeOn(AndroidSchedulers.mainThread())
@@ -130,7 +130,7 @@ public class SelectChannelFragment extends DialogFragment {
 
     private void clickedItem(final int position) {
         if (onSelectedListener != null) {
-            SubscriptionEntity entry = subscriptions.get(position);
+            final SubscriptionEntity entry = subscriptions.get(position);
             onSelectedListener
                     .onChannelSelected(entry.getServiceId(), entry.getUrl(), entry.getName());
         }
@@ -199,14 +199,14 @@ public class SelectChannelFragment extends DialogFragment {
         @Override
         public SelectChannelItemHolder onCreateViewHolder(final ViewGroup parent,
                                                           final int viewType) {
-            View item = LayoutInflater.from(parent.getContext())
+            final View item = LayoutInflater.from(parent.getContext())
                     .inflate(R.layout.select_channel_item, parent, false);
             return new SelectChannelItemHolder(item);
         }
 
         @Override
         public void onBindViewHolder(final SelectChannelItemHolder holder, final int position) {
-            SubscriptionEntity entry = subscriptions.get(position);
+            final SubscriptionEntity entry = subscriptions.get(position);
             holder.titleView.setText(entry.getName());
             holder.view.setOnClickListener(new View.OnClickListener() {
                 @Override

app/src/main/java/org/schabi/newpipe/settings/SelectKioskFragment.java

@@ -76,12 +76,12 @@ public class SelectKioskFragment extends DialogFragment {
     @Override
     public View onCreateView(final LayoutInflater inflater, final ViewGroup container,
                              final Bundle savedInstanceState) {
-        View v = inflater.inflate(R.layout.select_kiosk_fragment, container, false);
+        final View v = inflater.inflate(R.layout.select_kiosk_fragment, container, false);
         recyclerView = v.findViewById(R.id.items_list);
         recyclerView.setLayoutManager(new LinearLayoutManager(getContext()));
         try {
             selectKioskAdapter = new SelectKioskAdapter();
-        } catch (Exception e) {
+        } catch (final Exception e) {
             onError(e);
         }
         recyclerView.setAdapter(selectKioskAdapter);
@@ -135,9 +135,9 @@ public class SelectKioskFragment extends DialogFragment {
         private final List<Entry> kioskList = new Vector<>();
 
         SelectKioskAdapter() throws Exception {
-            for (StreamingService service : NewPipe.getServices()) {
+            for (final StreamingService service : NewPipe.getServices()) {
-                for (String kioskId : service.getKioskList().getAvailableKiosks()) {
+                for (final String kioskId : service.getKioskList().getAvailableKiosks()) {
-                    String name = String.format(getString(R.string.service_kiosk_string),
+                    final String name = String.format(getString(R.string.service_kiosk_string),
                             service.getServiceInfo().getName(),
                             KioskTranslator.getTranslatedKioskName(kioskId, getContext()));
                     kioskList.add(new Entry(ServiceHelper.getIcon(service.getServiceId()),
@@ -151,7 +151,7 @@ public class SelectKioskFragment extends DialogFragment {
         }
 
         public SelectKioskItemHolder onCreateViewHolder(final ViewGroup parent, final int type) {
-            View item = LayoutInflater.from(parent.getContext())
+            final View item = LayoutInflater.from(parent.getContext())
                     .inflate(R.layout.select_kiosk_item, parent, false);
             return new SelectKioskItemHolder(item);
         }

app/src/main/java/org/schabi/newpipe/settings/SelectPlaylistFragment.java

@@ -74,7 +74,7 @@ public class SelectPlaylistFragment extends DialogFragment {
                 inflater.inflate(R.layout.select_playlist_fragment, container, false);
         recyclerView = v.findViewById(R.id.items_list);
         recyclerView.setLayoutManager(new LinearLayoutManager(getContext()));
-        SelectPlaylistAdapter playlistAdapter = new SelectPlaylistAdapter();
+        final SelectPlaylistAdapter playlistAdapter = new SelectPlaylistAdapter();
         recyclerView.setAdapter(playlistAdapter);
 
         progressBar = v.findViewById(R.id.progressBar);

app/src/main/java/org/schabi/newpipe/settings/SettingsActivity.java

@@ -53,7 +53,7 @@ public class SettingsActivity extends AppCompatActivity
         super.onCreate(savedInstanceBundle);
         setContentView(R.layout.settings_layout);
 
-        Toolbar toolbar = findViewById(R.id.toolbar);
+        final Toolbar toolbar = findViewById(R.id.toolbar);
         setSupportActionBar(toolbar);
 
         if (savedInstanceBundle == null) {
@@ -69,7 +69,7 @@ public class SettingsActivity extends AppCompatActivity
 
     @Override
     public boolean onCreateOptionsMenu(final Menu menu) {
-        ActionBar actionBar = getSupportActionBar();
+        final ActionBar actionBar = getSupportActionBar();
         if (actionBar != null) {
             actionBar.setDisplayHomeAsUpEnabled(true);
             actionBar.setDisplayShowTitleEnabled(true);
@@ -80,7 +80,7 @@ public class SettingsActivity extends AppCompatActivity
 
     @Override
     public boolean onOptionsItemSelected(final MenuItem item) {
-        int id = item.getItemId();
+        final int id = item.getItemId();
         if (id == android.R.id.home) {
             if (getSupportFragmentManager().getBackStackEntryCount() == 0) {
                 finish();
@@ -95,7 +95,7 @@ public class SettingsActivity extends AppCompatActivity
     @Override
     public boolean onPreferenceStartFragment(final PreferenceFragmentCompat caller,
                                              final Preference preference) {
-        Fragment fragment = Fragment
+        final Fragment fragment = Fragment
                 .instantiate(this, preference.getFragment(), preference.getExtras());
         getSupportFragmentManager().beginTransaction()
                 .setCustomAnimations(R.animator.custom_fade_in, R.animator.custom_fade_out,

app/src/main/java/org/schabi/newpipe/settings/UpdateSettingsFragment.java

@@ -19,7 +19,7 @@ public class UpdateSettingsFragment extends BasePreferenceFragment {
     public void onCreate(@Nullable final Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
 
-        String updateToggleKey = getString(R.string.update_app_key);
+        final String updateToggleKey = getString(R.string.update_app_key);
         findPreference(updateToggleKey).setOnPreferenceChangeListener(updatePreferenceChange);
     }
 

app/src/main/java/org/schabi/newpipe/settings/VideoAudioSettingsFragment.java

@@ -35,7 +35,7 @@ public class VideoAudioSettingsFragment extends BasePreferenceFragment {
             // show a snackbar to let the user give permission
             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M
                     && s.equals(getString(R.string.minimize_on_exit_key))) {
-                String newSetting = sharedPreferences.getString(s, null);
+                final String newSetting = sharedPreferences.getString(s, null);
                 if (newSetting != null
                         && newSetting.equals(getString(R.string.minimize_on_exit_popup_key))
                         && !Settings.canDrawOverlays(getContext())) {
@@ -68,7 +68,7 @@ public class VideoAudioSettingsFragment extends BasePreferenceFragment {
         final boolean inexactSeek = getPreferenceManager().getSharedPreferences()
                 .getBoolean(res.getString(R.string.use_inexact_seek_key), false);
 
-        for (String durationsValue : durationsValues) {
+        for (final String durationsValue : durationsValues) {
             currentDurationValue =
                     Integer.parseInt(durationsValue) / (int) DateUtils.SECOND_IN_MILLIS;
             if (inexactSeek && currentDurationValue % 10 == 5) {
@@ -81,7 +81,7 @@ public class VideoAudioSettingsFragment extends BasePreferenceFragment {
                         res.getQuantityString(R.plurals.seconds,
                                 currentDurationValue),
                         currentDurationValue));
-            } catch (Resources.NotFoundException ignored) {
+            } catch (final Resources.NotFoundException ignored) {
                 // if this happens, the translation is missing,
                 // and the english string will be displayed instead
             }
@@ -96,7 +96,7 @@ public class VideoAudioSettingsFragment extends BasePreferenceFragment {
             final int newDuration = selectedDuration / (int) DateUtils.SECOND_IN_MILLIS + 5;
             durations.setValue(Integer.toString(newDuration * (int) DateUtils.SECOND_IN_MILLIS));
 
-            Toast toast = Toast
+            final Toast toast = Toast
                     .makeText(getContext(),
                             getString(R.string.new_seek_duration_toast, newDuration),
                             Toast.LENGTH_LONG);

app/src/main/java/org/schabi/newpipe/settings/tabs/ChooseTabsFragment.java

@@ -173,7 +173,7 @@ public class ChooseTabsFragment extends Fragment {
                 return;
             }
 
-            Dialog.OnClickListener actionListener = (dialog, which) -> {
+            final Dialog.OnClickListener actionListener = (dialog, which) -> {
                 final ChooseTabListItem selected = availableTabs[which];
                 addTab(selected.tabId);
             };
@@ -201,19 +201,19 @@ public class ChooseTabsFragment extends Fragment {
 
         switch (type) {
             case KIOSK:
-                SelectKioskFragment selectKioskFragment = new SelectKioskFragment();
+                final SelectKioskFragment selectKioskFragment = new SelectKioskFragment();
                 selectKioskFragment.setOnSelectedListener((serviceId, kioskId, kioskName) ->
                         addTab(new Tab.KioskTab(serviceId, kioskId)));
                 selectKioskFragment.show(requireFragmentManager(), "select_kiosk");
                 return;
             case CHANNEL:
-                SelectChannelFragment selectChannelFragment = new SelectChannelFragment();
+                final SelectChannelFragment selectChannelFragment = new SelectChannelFragment();
                 selectChannelFragment.setOnSelectedListener((serviceId, url, name) ->
                         addTab(new Tab.ChannelTab(serviceId, url, name)));
                 selectChannelFragment.show(requireFragmentManager(), "select_channel");
                 return;
             case PLAYLIST:
-                SelectPlaylistFragment selectPlaylistFragment = new SelectPlaylistFragment();
+                final SelectPlaylistFragment selectPlaylistFragment = new SelectPlaylistFragment();
                 selectPlaylistFragment.setOnSelectedListener(
                         new SelectPlaylistFragment.OnSelectedListener() {
                             @Override
@@ -238,7 +238,7 @@ public class ChooseTabsFragment extends Fragment {
     private ChooseTabListItem[] getAvailableTabs(final Context context) {
         final ArrayList<ChooseTabListItem> returnList = new ArrayList<>();
 
-        for (Tab.Type type : Tab.Type.values()) {
+        for (final Tab.Type type : Tab.Type.values()) {
             final Tab tab = type.getTab();
             switch (type) {
                 case BLANK:
@@ -329,7 +329,7 @@ public class ChooseTabsFragment extends Fragment {
 
             @Override
             public void onSwiped(final RecyclerView.ViewHolder viewHolder, final int swipeDir) {
-                int position = viewHolder.getAdapterPosition();
+                final int position = viewHolder.getAdapterPosition();
                 tabList.remove(position);
                 selectedTabsAdapter.notifyItemRemoved(position);
 

app/src/main/java/org/schabi/newpipe/settings/tabs/Tab.java

@@ -65,7 +65,7 @@ public abstract class Tab {
 
     @Nullable
     public static Type typeFrom(final int tabId) {
-        for (Type available : Type.values()) {
+        for (final Type available : Type.values()) {
             if (available.getTabId() == tabId) {
                 return available;
             }
@@ -481,7 +481,7 @@ public abstract class Tab {
             try {
                 final StreamingService service = NewPipe.getService(kioskServiceId);
                 kioskId = service.getKioskList().getDefaultKioskId();
-            } catch (ExtractionException e) {
+            } catch (final ExtractionException e) {
                 ErrorActivity.reportError(context, e, null, null,
                         ErrorActivity.ErrorInfo.make(UserAction.REQUESTED_KIOSK, "none",
                                 "Loading default kiosk from selected service", 0));

app/src/main/java/org/schabi/newpipe/settings/tabs/TabsJsonHelper.java

@@ -59,7 +59,7 @@ public final class TabsJsonHelper {
 
             final JsonArray tabsArray = outerJsonObject.getArray(JSON_TABS_ARRAY_KEY);
 
-            for (Object o : tabsArray) {
+            for (final Object o : tabsArray) {
                 if (!(o instanceof JsonObject)) {
                     continue;
                 }
@@ -70,7 +70,7 @@ public final class TabsJsonHelper {
                     returnTabs.add(tab);
                 }
             }
-        } catch (JsonParserException e) {
+        } catch (final JsonParserException e) {
             throw new InvalidJsonException(e);
         }
 
@@ -93,7 +93,7 @@ public final class TabsJsonHelper {
 
         jsonWriter.array(JSON_TABS_ARRAY_KEY);
         if (tabList != null) {
-            for (Tab tab : tabList) {
+            for (final Tab tab : tabList) {
                 tab.writeJsonOn(jsonWriter);
             }
         }

app/src/main/java/org/schabi/newpipe/settings/tabs/TabsManager.java

@@ -30,7 +30,7 @@ public final class TabsManager {
         final String savedJson = sharedPreferences.getString(savedTabsKey, null);
         try {
             return TabsJsonHelper.getTabsFromJson(savedJson);
-        } catch (TabsJsonHelper.InvalidJsonException e) {
+        } catch (final TabsJsonHelper.InvalidJsonException e) {
             Toast.makeText(context, R.string.saved_tabs_invalid_json, Toast.LENGTH_SHORT).show();
             return getDefaultTabs();
         }

app/src/main/java/org/schabi/newpipe/streams/DataReader.java

@@ -70,7 +70,7 @@ public class DataReader {
     }
 
     public long readUnsignedInt()  throws IOException {
-        long value = readInt();
+        final long value = readInt();
         return value & 0xffffffffL;
     }
 
@@ -82,8 +82,9 @@ public class DataReader {
 
     public long readLong() throws IOException {
         primitiveRead(LONG_SIZE);
-        long high = primitive[0] << 24 | primitive[1] << 16 | primitive[2] << 8 | primitive[3];
+        final long high
-        long low = primitive[4] << 24 | primitive[5] << 16 | primitive[6] << 8 | primitive[7];
+                = primitive[0] << 24 | primitive[1] << 16 | primitive[2] << 8 | primitive[3];
+        final long low = primitive[4] << 24 | primitive[5] << 16 | primitive[6] << 8 | primitive[7];
         return high << 32 | low;
     }
 
@@ -114,7 +115,7 @@ public class DataReader {
             total += Math.max(stream.read(buffer, offset, count), 0);
         } else {
             while (count > 0 && !fillBuffer()) {
-                int read = Math.min(readCount, count);
+                final int read = Math.min(readCount, count);
                 System.arraycopy(readBuffer, readOffset, buffer, offset, read);
 
                 readOffset += read;
@@ -169,7 +170,7 @@ public class DataReader {
                     if (viewSize < 1) {
                         return -1;
                     }
-                    int res = DataReader.this.read();
+                    final int res = DataReader.this.read();
                     if (res > 0) {
                         viewSize--;
                     }
@@ -188,7 +189,7 @@ public class DataReader {
                         return -1;
                     }
 
-                    int res = DataReader.this.read(buffer, offset, Math.min(viewSize, count));
+                    final int res = DataReader.this.read(buffer, offset, Math.min(viewSize, count));
                     viewSize -= res;
 
                     return res;
@@ -199,7 +200,7 @@ public class DataReader {
                     if (viewSize < 1) {
                         return 0;
                     }
-                    int res = (int) DataReader.this.skipBytes(Math.min(amount, viewSize));
+                    final int res = (int) DataReader.this.skipBytes(Math.min(amount, viewSize));
                     viewSize -= res;
 
                     return res;
@@ -230,8 +231,8 @@ public class DataReader {
     private final short[] primitive = new short[LONG_SIZE];
 
     private void primitiveRead(final int amount) throws IOException {
-        byte[] buffer = new byte[amount];
+        final byte[] buffer = new byte[amount];
-        int read = read(buffer, 0, amount);
+        final int read = read(buffer, 0, amount);
 
         if (read != amount) {
             throw new EOFException("Truncated stream, missing "

app/src/main/java/org/schabi/newpipe/streams/Mp4DashReader.java

@@ -116,7 +116,7 @@ public class Mp4DashReader {
             tracks[i].trak = moov.trak[i];
 
             if (moov.mvexTrex != null) {
-                for (Trex mvexTrex : moov.mvexTrex) {
+                for (final Trex mvexTrex : moov.mvexTrex) {
                     if (tracks[i].trak.tkhd.trackId == mvexTrex.trackId) {
                         tracks[i].trex = mvexTrex;
                     }
@@ -174,7 +174,7 @@ public class Mp4DashReader {
     }
 
     public Mp4DashChunk getNextChunk(final boolean infoOnly) throws IOException {
-        Mp4Track track = tracks[selectedTrack];
+        final Mp4Track track = tracks[selectedTrack];
 
         while (stream.available()) {
 
@@ -233,7 +233,7 @@ public class Mp4DashReader {
                         continue; // find another chunk
                     }
 
-                    Mp4DashChunk chunk = new Mp4DashChunk();
+                    final Mp4DashChunk chunk = new Mp4DashChunk();
                     chunk.moof = moof;
                     if (!infoOnly) {
                         chunk.data = stream.getView(moof.traf.trun.chunkSize);
@@ -261,13 +261,13 @@ public class Mp4DashReader {
     private String boxName(final int type) {
         try {
             return new String(ByteBuffer.allocate(4).putInt(type).array(), "UTF-8");
-        } catch (UnsupportedEncodingException e) {
+        } catch (final UnsupportedEncodingException e) {
             return "0x" + Integer.toHexString(type);
         }
     }
 
     private Box readBox() throws IOException {
-        Box b = new Box();
+        final Box b = new Box();
         b.offset = stream.position();
         b.size = stream.readUnsignedInt();
         b.type = stream.readInt();
@@ -280,7 +280,7 @@ public class Mp4DashReader {
     }
 
     private Box readBox(final int expected) throws IOException {
-        Box b = readBox();
+        final Box b = readBox();
         if (b.type != expected) {
             throw new NoSuchElementException("expected " + boxName(expected)
                     + " found " + boxName(b));
@@ -290,13 +290,13 @@ public class Mp4DashReader {
 
     private byte[] readFullBox(final Box ref) throws IOException {
         // full box reading is limited to 2 GiB, and should be enough
-        int size = (int) ref.size;
+        final int size = (int) ref.size;
 
-        ByteBuffer buffer = ByteBuffer.allocate(size);
+        final ByteBuffer buffer = ByteBuffer.allocate(size);
         buffer.putInt(size);
         buffer.putInt(ref.type);
 
-        int read = size - 8;
+        final int read = size - 8;
 
         if (stream.read(buffer.array(), 8, read) != read) {
             throw new EOFException(String.format("EOF reached in box: type=%s offset=%s size=%s",
@@ -307,7 +307,7 @@ public class Mp4DashReader {
     }
 
     private void ensure(final Box ref) throws IOException {
-        long skip = ref.offset + ref.size - stream.position();
+        final long skip = ref.offset + ref.size - stream.position();
 
         if (skip == 0) {
             return;
@@ -325,7 +325,7 @@ public class Mp4DashReader {
         Box b;
         while (stream.position() < (ref.offset + ref.size)) {
             b = readBox();
-            for (int type : expected) {
+            for (final int type : expected) {
                 if (b.type == type) {
                     return b;
                 }
@@ -345,7 +345,7 @@ public class Mp4DashReader {
     }
 
     private Moof parseMoof(final Box ref, final int trackId) throws IOException {
-        Moof obj = new Moof();
+        final Moof obj = new Moof();
 
         Box b = readBox(ATOM_MFHD);
         obj.mfhdSequenceNumber = parseMfhd();
@@ -372,7 +372,7 @@ public class Mp4DashReader {
     }
 
     private Traf parseTraf(final Box ref, final int trackId) throws IOException {
-        Traf traf = new Traf();
+        final Traf traf = new Traf();
 
         Box b = readBox(ATOM_TFHD);
         traf.tfhd = parseTfhd(trackId);
@@ -397,7 +397,7 @@ public class Mp4DashReader {
     }
 
     private Tfhd parseTfhd(final int trackId) throws IOException {
-        Tfhd obj = new Tfhd();
+        final Tfhd obj = new Tfhd();
 
         obj.bFlags = stream.readInt();
         obj.trackId = stream.readInt();
@@ -426,13 +426,13 @@ public class Mp4DashReader {
     }
 
     private long parseTfdt() throws IOException {
-        int version = stream.read();
+        final int version = stream.read();
         stream.skipBytes(3); // flags
         return version == 0 ? stream.readUnsignedInt() : stream.readLong();
     }
 
     private Trun parseTrun() throws IOException {
-        Trun obj = new Trun();
+        final Trun obj = new Trun();
         obj.bFlags = stream.readInt();
         obj.entryCount = stream.readInt(); // unsigned int
 
@@ -461,7 +461,7 @@ public class Mp4DashReader {
         stream.read(obj.bEntries);
 
         for (int i = 0; i < obj.entryCount; i++) {
-            TrunEntry entry = obj.getEntry(i);
+            final TrunEntry entry = obj.getEntry(i);
             if (hasFlag(obj.bFlags, 0x0100)) {
                 obj.chunkDuration += entry.sampleDuration;
             }
@@ -480,7 +480,7 @@ public class Mp4DashReader {
 
     private int[] parseFtyp(final Box ref) throws IOException {
         int i = 0;
-        int[] list = new int[(int) ((ref.offset + ref.size - stream.position() - 4) / 4)];
+        final int[] list = new int[(int) ((ref.offset + ref.size - stream.position() - 4) / 4)];
 
         list[i++] = stream.readInt(); // major brand
 
@@ -494,14 +494,14 @@ public class Mp4DashReader {
     }
 
     private Mvhd parseMvhd() throws IOException {
-        int version = stream.read();
+        final int version = stream.read();
         stream.skipBytes(3); // flags
 
         // creation entries_time
         // modification entries_time
         stream.skipBytes(2 * (version == 0 ? 4 : 8));
 
-        Mvhd obj = new Mvhd();
+        final Mvhd obj = new Mvhd();
         obj.timeScale = stream.readUnsignedInt();
 
         // chunkDuration
@@ -520,9 +520,9 @@ public class Mp4DashReader {
     }
 
     private Tkhd parseTkhd() throws IOException {
-        int version = stream.read();
+        final int version = stream.read();
 
-        Tkhd obj = new Tkhd();
+        final Tkhd obj = new Tkhd();
 
         // flags
         // creation entries_time
@@ -553,7 +553,7 @@ public class Mp4DashReader {
     }
 
     private Trak parseTrak(final Box ref) throws IOException {
-        Trak trak = new Trak();
+        final Trak trak = new Trak();
 
         Box b = readBox(ATOM_TKHD);
         trak.tkhd = parseTkhd();
@@ -576,7 +576,7 @@ public class Mp4DashReader {
     }
 
     private Mdia parseMdia(final Box ref) throws IOException {
-        Mdia obj = new Mdia();
+        final Mdia obj = new Mdia();
 
         Box b;
         while ((b = untilBox(ref, ATOM_MDHD, ATOM_HDLR, ATOM_MINF)) != null) {
@@ -585,8 +585,8 @@ public class Mp4DashReader {
                     obj.mdhd = readFullBox(b);
 
                     // read time scale
-                    ByteBuffer buffer = ByteBuffer.wrap(obj.mdhd);
+                    final ByteBuffer buffer = ByteBuffer.wrap(obj.mdhd);
-                    byte version = buffer.get(8);
+                    final byte version = buffer.get(8);
                     buffer.position(12 + ((version == 0 ? 4 : 8) * 2));
                     obj.mdhdTimeScale = buffer.getInt();
                     break;
@@ -608,7 +608,7 @@ public class Mp4DashReader {
         // flags
         stream.skipBytes(4);
 
-        Hdlr obj = new Hdlr();
+        final Hdlr obj = new Hdlr();
         obj.bReserved = new byte[12];
 
         obj.type = stream.readInt();
@@ -623,11 +623,11 @@ public class Mp4DashReader {
 
     private Moov parseMoov(final Box ref) throws IOException {
         Box b = readBox(ATOM_MVHD);
-        Moov moov = new Moov();
+        final Moov moov = new Moov();
         moov.mvhd = parseMvhd();
         ensure(b);
 
-        ArrayList<Trak> tmp = new ArrayList<>((int) moov.mvhd.nextTrackId);
+        final ArrayList<Trak> tmp = new ArrayList<>((int) moov.mvhd.nextTrackId);
         while ((b = untilBox(ref, ATOM_TRAK, ATOM_MVEX)) != null) {
 
             switch (b.type) {
@@ -648,7 +648,7 @@ public class Mp4DashReader {
     }
 
     private Trex[] parseMvex(final Box ref, final int possibleTrackCount) throws IOException {
-        ArrayList<Trex> tmp = new ArrayList<>(possibleTrackCount);
+        final ArrayList<Trex> tmp = new ArrayList<>(possibleTrackCount);
 
         Box b;
         while ((b = untilBox(ref, ATOM_TREX)) != null) {
@@ -664,7 +664,7 @@ public class Mp4DashReader {
         // flags
         stream.skipBytes(4);
 
-        Trex obj = new Trex();
+        final Trex obj = new Trex();
         obj.trackId = stream.readInt();
         obj.defaultSampleDescriptionIndex = stream.readInt();
         obj.defaultSampleDuration = stream.readInt();
@@ -675,17 +675,17 @@ public class Mp4DashReader {
     }
 
     private Elst parseEdts(final Box ref) throws IOException {
-        Box b = untilBox(ref, ATOM_ELST);
+        final Box b = untilBox(ref, ATOM_ELST);
         if (b == null) {
             return null;
         }
 
-        Elst obj = new Elst();
+        final Elst obj = new Elst();
 
-        boolean v1 = stream.read() == 1;
+        final boolean v1 = stream.read() == 1;
         stream.skipBytes(3); // flags
 
-        int entryCount = stream.readInt();
+        final int entryCount = stream.readInt();
         if (entryCount < 1) {
             obj.bMediaRate = 0x00010000; // default media rate (1.0)
             return obj;
@@ -707,7 +707,7 @@ public class Mp4DashReader {
     }
 
     private Minf parseMinf(final Box ref) throws IOException {
-        Minf obj = new Minf();
+        final Minf obj = new Minf();
 
         Box b;
         while ((b = untilAnyBox(ref)) != null) {
@@ -738,7 +738,7 @@ public class Mp4DashReader {
      * @return stsd box inside
      */
     private byte[] parseStbl(final Box ref) throws IOException {
-        Box b = untilBox(ref, ATOM_STSD);
+        final Box b = untilBox(ref, ATOM_STSD);
 
         if (b == null) {
             return new byte[0]; // this never should happens (missing codec startup data)
@@ -796,8 +796,8 @@ public class Mp4DashReader {
         int entriesRowSize;
 
         public TrunEntry getEntry(final int i) {
-            ByteBuffer buffer = ByteBuffer.wrap(bEntries, i * entriesRowSize, entriesRowSize);
+            final ByteBuffer buffer = ByteBuffer.wrap(bEntries, i * entriesRowSize, entriesRowSize);
-            TrunEntry entry = new TrunEntry();
+            final TrunEntry entry = new TrunEntry();
 
             if (hasFlag(bFlags, 0x0100)) {
                 entry.sampleDuration = buffer.getInt();
@@ -819,7 +819,7 @@ public class Mp4DashReader {
         }
 
         public TrunEntry getAbsoluteEntry(final int i, final Tfhd header) {
-            TrunEntry entry = getEntry(i);
+            final TrunEntry entry = getEntry(i);
 
             if (!hasFlag(bFlags, 0x0100) && hasFlag(header.bFlags, 0x20)) {
                 entry.sampleFlags = header.defaultSampleFlags;
@@ -928,7 +928,7 @@ public class Mp4DashReader {
                 return null;
             }
 
-            Mp4DashSample sample = new Mp4DashSample();
+            final Mp4DashSample sample = new Mp4DashSample();
             sample.info = moof.traf.trun.getAbsoluteEntry(i++, moof.traf.tfhd);
             sample.data = new byte[sample.info.sampleSize];
 

app/src/main/java/org/schabi/newpipe/streams/Mp4FromDashWriter.java

@@ -51,7 +51,7 @@ public class Mp4FromDashWriter {
     private final ArrayList<Integer> compatibleBrands = new ArrayList<>(5);
 
     public Mp4FromDashWriter(final SharpStream... sources) throws IOException {
-        for (SharpStream src : sources) {
+        for (final SharpStream src : sources) {
             if (!src.canRewind() && !src.canRead()) {
                 throw new IOException("All sources must be readable and allow rewind");
             }
@@ -128,7 +128,7 @@ public class Mp4FromDashWriter {
         done = true;
         parsed = true;
 
-        for (SharpStream src : sourceTracks) {
+        for (final SharpStream src : sourceTracks) {
             src.close();
         }
 
@@ -157,17 +157,17 @@ public class Mp4FromDashWriter {
         outStream = output;
         long read = 8; // mdat box header size
         long totalSampleSize = 0;
-        int[] sampleExtra = new int[readers.length];
+        final int[] sampleExtra = new int[readers.length];
-        int[] defaultMediaTime = new int[readers.length];
+        final int[] defaultMediaTime = new int[readers.length];
-        int[] defaultSampleDuration = new int[readers.length];
+        final int[] defaultSampleDuration = new int[readers.length];
-        int[] sampleCount = new int[readers.length];
+        final int[] sampleCount = new int[readers.length];
 
-        TablesInfo[] tablesInfo = new TablesInfo[tracks.length];
+        final TablesInfo[] tablesInfo = new TablesInfo[tracks.length];
         for (int i = 0; i < tablesInfo.length; i++) {
             tablesInfo[i] = new TablesInfo();
         }
 
-        int singleSampleBuffer;
+        final int singleSampleBuffer;
         if (tracks.length == 1 && tracks[0].kind == TrackKind.Audio) {
             // near 1 second of audio data per chunk, avoid split the audio stream in large chunks
             singleSampleBuffer = tracks[0].trak.mdia.mdhdTimeScale / 1000;
@@ -250,10 +250,10 @@ public class Mp4FromDashWriter {
         }
 
 
-        boolean is64 = read > THRESHOLD_FOR_CO64;
+        final boolean is64 = read > THRESHOLD_FOR_CO64;
 
         // calculate the moov size
-        int auxSize = makeMoov(defaultMediaTime, tablesInfo, is64);
+        final int auxSize = makeMoov(defaultMediaTime, tablesInfo, is64);
 
         if (auxSize < THRESHOLD_MOOV_LENGTH) {
             auxBuffer = ByteBuffer.allocate(auxSize); // cache moov in the memory
@@ -267,9 +267,9 @@ public class Mp4FromDashWriter {
         // reserve moov space in the output stream
         if (auxSize > 0) {
             int length = auxSize;
-            byte[] buffer = new byte[64 * 1024]; // 64 KiB
+            final byte[] buffer = new byte[64 * 1024]; // 64 KiB
             while (length > 0) {
-                int count = Math.min(length, buffer.length);
+                final int count = Math.min(length, buffer.length);
                 outWrite(buffer, count);
                 length -= count;
             }
@@ -305,9 +305,10 @@ public class Mp4FromDashWriter {
 
         outWrite(makeMdat(totalSampleSize, is64));
 
-        int[] sampleIndex = new int[readers.length];
+        final int[] sampleIndex = new int[readers.length];
-        int[] sizes = new int[singleSampleBuffer > 0 ? singleSampleBuffer : SAMPLES_PER_CHUNK];
+        final int[] sizes
-        int[] sync = new int[singleSampleBuffer > 0 ? singleSampleBuffer : SAMPLES_PER_CHUNK];
+                = new int[singleSampleBuffer > 0 ? singleSampleBuffer : SAMPLES_PER_CHUNK];
+        final int[] sync = new int[singleSampleBuffer > 0 ? singleSampleBuffer : SAMPLES_PER_CHUNK];
 
         int written = readers.length;
         while (written > 0) {
@@ -318,9 +319,9 @@ public class Mp4FromDashWriter {
                     continue; // track is done
                 }
 
-                long chunkOffset = writeOffset;
+                final long chunkOffset = writeOffset;
                 int syncCount = 0;
-                int limit;
+                final int limit;
                 if (singleSampleBuffer > 0) {
                     limit = singleSampleBuffer;
                 } else {
@@ -329,7 +330,7 @@ public class Mp4FromDashWriter {
 
                 int j = 0;
                 for (; j < limit; j++) {
-                    Mp4DashSample sample = getNextSample(i);
+                    final Mp4DashSample sample = getNextSample(i);
 
                     if (sample == null) {
                         if (tablesInfo[i].ctts > 0 && sampleExtra[i] >= 0) {
@@ -409,7 +410,7 @@ public class Mp4FromDashWriter {
             }
         }
 
-        Mp4DashSample sample = readersChunks[track].getNextSample();
+        final Mp4DashSample sample = readersChunks[track].getNextSample();
         if (sample == null) {
             readersChunks[track] = null;
             return getNextSample(track);
@@ -434,8 +435,8 @@ public class Mp4FromDashWriter {
 
         auxSeek(offset);
 
-        int size = count * 4;
+        final int size = count * 4;
-        ByteBuffer buffer = ByteBuffer.allocate(size);
+        final ByteBuffer buffer = ByteBuffer.allocate(size);
 
         for (int i = 0; i < count; i++) {
             buffer.putInt(values[i]);
@@ -466,10 +467,10 @@ public class Mp4FromDashWriter {
     private void initChunkTables(final TablesInfo tables, final int firstCount,
                                  final int successiveCount) {
         // tables.stsz holds amount of samples of the track (total)
-        int totalSamples = (tables.stsz - firstCount);
+        final int totalSamples = (tables.stsz - firstCount);
-        float chunkAmount = totalSamples / (float) successiveCount;
+        final float chunkAmount = totalSamples / (float) successiveCount;
-        int remainChunkOffset = (int) Math.ceil(chunkAmount);
+        final int remainChunkOffset = (int) Math.ceil(chunkAmount);
-        boolean remain = remainChunkOffset != (int) chunkAmount;
+        final boolean remain = remainChunkOffset != (int) chunkAmount;
         int index = 0;
 
         tables.stsc = 1;
@@ -529,7 +530,7 @@ public class Mp4FromDashWriter {
     }
 
     private int lengthFor(final int offset) throws IOException {
-        int size = auxOffset() - offset;
+        final int size = auxOffset() - offset;
 
         if (moovSimulation) {
             return size;
@@ -545,7 +546,7 @@ public class Mp4FromDashWriter {
     private int make(final int type, final int extra, final int columns, final int rows)
             throws IOException {
         final byte base = 16;
-        int size = columns * rows * 4;
+        final int size = columns * rows * 4;
         int total = size + base;
         int offset = auxOffset();
 
@@ -618,7 +619,7 @@ public class Mp4FromDashWriter {
             size += 4;
         }
 
-        ByteBuffer buffer = ByteBuffer.allocate(size);
+        final ByteBuffer buffer = ByteBuffer.allocate(size);
         buffer.putInt(size);
         buffer.putInt(0x66747970); // "ftyp"
 
@@ -631,7 +632,7 @@ public class Mp4FromDashWriter {
             buffer.putInt(0x6D703432); // "mp42" compatible brand
         }
 
-        for (Integer brand : compatibleBrands) {
+        for (final Integer brand : compatibleBrands) {
             buffer.putInt(brand); // compatible brand
         }
 
@@ -648,7 +649,7 @@ public class Mp4FromDashWriter {
             size += 8;
         }
 
-        ByteBuffer buffer = ByteBuffer.allocate(is64 ? 16 : 8)
+        final ByteBuffer buffer = ByteBuffer.allocate(is64 ? 16 : 8)
                 .putInt(is64 ? 0x01 : (int) size)
                 .putInt(0x6D646174); // mdat
 
@@ -689,14 +690,14 @@ public class Mp4FromDashWriter {
 
     private int makeMoov(final int[] defaultMediaTime, final TablesInfo[] tablesInfo,
                          final boolean is64) throws RuntimeException, IOException {
-        int start = auxOffset();
+        final int start = auxOffset();
 
         auxWrite(new byte[]{
                 0x00, 0x00, 0x00, 0x00, 0x6D, 0x6F, 0x6F, 0x76
         });
 
         long longestTrack = 0;
-        long[] durations = new long[tracks.length];
+        final long[] durations = new long[tracks.length];
 
         for (int i = 0; i < durations.length; i++) {
             durations[i] = (long) Math.ceil(
@@ -723,7 +724,7 @@ public class Mp4FromDashWriter {
 
     private void makeTrak(final int index, final long duration, final int defaultMediaTime,
                           final TablesInfo tables, final boolean is64) throws IOException {
-        int start = auxOffset();
+        final int start = auxOffset();
 
         auxWrite(new byte[]{
                 // trak header
@@ -732,7 +733,7 @@ public class Mp4FromDashWriter {
                 0x00, 0x00, 0x00, 0x68, 0x74, 0x6B, 0x68, 0x64, 0x01, 0x00, 0x00, 0x03
         });
 
-        ByteBuffer buffer = ByteBuffer.allocate(48);
+        final ByteBuffer buffer = ByteBuffer.allocate(48);
         buffer.putLong(time);
         buffer.putLong(time);
         buffer.putInt(index + 1);
@@ -757,8 +758,8 @@ public class Mp4FromDashWriter {
                 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 // elst header
         });
 
-        int bMediaRate;
+        final int bMediaRate;
-        int mediaTime;
+        final int mediaTime;
 
         if (tracks[index].trak.edstElst == null) {
             // is a audio track ¿is edst/elst optional for audio tracks?
@@ -784,17 +785,17 @@ public class Mp4FromDashWriter {
 
     private void makeMdia(final Mdia mdia, final TablesInfo tablesInfo, final boolean is64,
                           final boolean isAudio) throws IOException {
-        int startMdia = auxOffset();
+        final int startMdia = auxOffset();
         auxWrite(new byte[]{0x00, 0x00, 0x00, 0x00, 0x6D, 0x64, 0x69, 0x61}); // mdia
         auxWrite(mdia.mdhd);
         auxWrite(makeHdlr(mdia.hdlr));
 
-        int startMinf = auxOffset();
+        final int startMinf = auxOffset();
         auxWrite(new byte[]{0x00, 0x00, 0x00, 0x00, 0x6D, 0x69, 0x6E, 0x66}); // minf
         auxWrite(mdia.minf.mhd);
         auxWrite(mdia.minf.dinf);
 
-        int startStbl = auxOffset();
+        final int startStbl = auxOffset();
         auxWrite(new byte[]{0x00, 0x00, 0x00, 0x00, 0x73, 0x74, 0x62, 0x6C}); // stbl
         auxWrite(mdia.minf.stblStsd);
 
@@ -838,7 +839,7 @@ public class Mp4FromDashWriter {
     }
 
     private byte[] makeHdlr(final Hdlr hdlr) {
-        ByteBuffer buffer = ByteBuffer.wrap(new byte[]{
+        final ByteBuffer buffer = ByteBuffer.wrap(new byte[]{
                 0x00, 0x00, 0x00, 0x21, 0x68, 0x64, 0x6C, 0x72, // hdlr
                 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
                 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
@@ -854,7 +855,7 @@ public class Mp4FromDashWriter {
     }
 
     private int makeSbgp() throws IOException {
-        int offset = auxOffset();
+        final int offset = auxOffset();
 
         auxWrite(new byte[] {
                 0x00, 0x00, 0x00, 0x1C, // box size
@@ -883,7 +884,7 @@ public class Mp4FromDashWriter {
          * most of m4a encoders and ffmpeg uses this box with dummy values (same values)
          */
 
-        ByteBuffer buffer = ByteBuffer.wrap(new byte[] {
+        final ByteBuffer buffer = ByteBuffer.wrap(new byte[] {
                 0x00, 0x00, 0x00, 0x1A, // box size
                 0x73, 0x67, 0x70, 0x64, // "sgpd"
                 0x01, 0x00, 0x00, 0x00, // box flags (unknown flag sets)

app/src/main/java/org/schabi/newpipe/streams/OggFromWebMWriter.java

@@ -145,10 +145,10 @@ public class OggFromWebMWriter implements Closeable {
     }
 
     public void build() throws IOException {
-        float resolution;
+        final float resolution;
         SimpleBlock bloq;
-        ByteBuffer header = ByteBuffer.allocate(27 + (255 * 255));
+        final ByteBuffer header = ByteBuffer.allocate(27 + (255 * 255));
-        ByteBuffer page = ByteBuffer.allocate(64 * 1024);
+        final ByteBuffer page = ByteBuffer.allocate(64 * 1024);
 
         header.order(ByteOrder.LITTLE_ENDIAN);
 
@@ -181,7 +181,7 @@ public class OggFromWebMWriter implements Closeable {
         }
 
         /* step 3: create packet with metadata */
-        byte[] buffer = makeMetadata();
+        final byte[] buffer = makeMetadata();
         if (buffer != null) {
             addPacketSegment(buffer.length);
             makePacketheader(0x00, header, buffer);
@@ -194,7 +194,7 @@ public class OggFromWebMWriter implements Closeable {
             bloq = getNextBlock();
 
             if (bloq != null && addPacketSegment(bloq)) {
-                int pos = page.position();
+                final int pos = page.position();
                 //noinspection ResultOfMethodCallIgnored
                 bloq.data.read(page.array(), pos, bloq.dataSize);
                 page.position(pos + bloq.dataSize);
@@ -334,10 +334,10 @@ public class OggFromWebMWriter implements Closeable {
 
     private float getSampleFrequencyFromTrack(final byte[] bMetadata) {
         // hardcoded way
-        ByteBuffer buffer = ByteBuffer.wrap(bMetadata);
+        final ByteBuffer buffer = ByteBuffer.wrap(bMetadata);
 
         while (buffer.remaining() >= 6) {
-            int id = buffer.getShort() & 0xFFFF;
+            final int id = buffer.getShort() & 0xFFFF;
             if (id == 0x0000B584) {
                 return buffer.getFloat();
             }
@@ -353,7 +353,7 @@ public class OggFromWebMWriter implements Closeable {
     }
 
     private boolean addPacketSegment(final SimpleBlock block) {
-        long timestamp = block.absoluteTimeCodeNs + webmTrack.codecDelay;
+        final long timestamp = block.absoluteTimeCodeNs + webmTrack.codecDelay;
 
         if (timestamp >= segmentTableNextTimestamp) {
             return false;
@@ -368,7 +368,7 @@ public class OggFromWebMWriter implements Closeable {
         }
 
         int available = (segmentTable.length - segmentTableSize) * 255;
-        boolean extra = (size % 255) == 0;
+        final boolean extra = (size % 255) == 0;
 
         if (extra) {
             // add a zero byte entry in the table
@@ -396,7 +396,7 @@ public class OggFromWebMWriter implements Closeable {
         for (int i = 0; i < 0x100; i++) {
             int crc = i << 24;
             for (int j = 0; j < 8; j++) {
-                long b = crc >>> 31;
+                final long b = crc >>> 31;
                 crc <<= 1;
                 crc ^= (int) (0x100000000L - b) & 0x04c11db7;
             }
@@ -407,7 +407,7 @@ public class OggFromWebMWriter implements Closeable {
     private int calcCrc32(final int initialCrc, final byte[] buffer, final int size) {
         int crc = initialCrc;
         for (int i = 0; i < size; i++) {
-            int reg = (crc >>> 24) & 0xff;
+            final int reg = (crc >>> 24) & 0xff;
             crc = (crc << 8) ^ crc32Table[reg ^ (buffer[i] & 0xff)];
         }
 

app/src/main/java/org/schabi/newpipe/streams/SrtFromTtmlWriter.java

@@ -65,23 +65,23 @@ public class SrtFromTtmlWriter {
          */
 
         // parse XML
-        byte[] buffer = new byte[(int) ttml.available()];
+        final byte[] buffer = new byte[(int) ttml.available()];
         ttml.read(buffer);
-        Document doc = Jsoup.parse(new ByteArrayInputStream(buffer), "UTF-8", "",
+        final Document doc = Jsoup.parse(new ByteArrayInputStream(buffer), "UTF-8", "",
                 Parser.xmlParser());
 
-        StringBuilder text = new StringBuilder(128);
+        final StringBuilder text = new StringBuilder(128);
-        Elements paragraphList = doc.select("body > div > p");
+        final Elements paragraphList = doc.select("body > div > p");
 
         // check if has frames
         if (paragraphList.size() < 1) {
             return;
         }
 
-        for (Element paragraph : paragraphList) {
+        for (final Element paragraph : paragraphList) {
             text.setLength(0);
 
-            for (Node children : paragraph.childNodes()) {
+            for (final Node children : paragraph.childNodes()) {
                 if (children instanceof TextNode) {
                     text.append(((TextNode) children).text());
                 } else if (children instanceof Element
@@ -94,8 +94,8 @@ public class SrtFromTtmlWriter {
                 continue;
             }
 
-            String begin = getTimestamp(paragraph, "begin");
+            final String begin = getTimestamp(paragraph, "begin");
-            String end = getTimestamp(paragraph, "end");
+            final String end = getTimestamp(paragraph, "end");
 
             writeFrame(begin, end, text);
         }

app/src/main/java/org/schabi/newpipe/streams/WebMReader.java

@@ -99,7 +99,7 @@ public class WebMReader {
 
         ensure(segment.ref);
         // WARNING: track cannot be the same or have different index in new segments
-        Element elem = untilElement(null, ID_SEGMENT);
+        final Element elem = untilElement(null, ID_SEGMENT);
         if (elem == null) {
             done = true;
             return null;
@@ -113,7 +113,7 @@ public class WebMReader {
         int length = (int) parent.contentSize;
         long value = 0;
         while (length-- > 0) {
-            int read = stream.read();
+            final int read = stream.read();
             if (read == -1) {
                 throw new EOFException();
             }
@@ -127,9 +127,9 @@ public class WebMReader {
     }
 
     private byte[] readBlob(final Element parent) throws IOException {
-        long length = parent.contentSize;
+        final long length = parent.contentSize;
-        byte[] buffer = new byte[(int) length];
+        final byte[] buffer = new byte[(int) length];
-        int read = stream.read(buffer);
+        final int read = stream.read(buffer);
         if (read < length) {
             throw new EOFException();
         }
@@ -168,7 +168,7 @@ public class WebMReader {
     }
 
     private Element readElement() throws IOException {
-        Element elem = new Element();
+        final Element elem = new Element();
         elem.offset = stream.position();
         elem.type = (int) readEncodedNumber();
         elem.contentSize = readEncodedNumber();
@@ -178,7 +178,7 @@ public class WebMReader {
     }
 
     private Element readElement(final int expected) throws IOException {
-        Element elem = readElement();
+        final Element elem = readElement();
         if (expected != 0 && elem.type != expected) {
             throw new NoSuchElementException("expected " + elementID(expected)
                     + " found " + elementID(elem.type));
@@ -194,7 +194,7 @@ public class WebMReader {
             if (expected.length < 1) {
                 return elem;
             }
-            for (int type : expected) {
+            for (final int type : expected) {
                 if (elem.type == type) {
                     return elem;
                 }
@@ -211,7 +211,7 @@ public class WebMReader {
     }
 
     private void ensure(final Element ref) throws IOException {
-        long skip = (ref.offset + ref.size) - stream.position();
+        final long skip = (ref.offset + ref.size) - stream.position();
 
         if (skip == 0) {
             return;
@@ -249,7 +249,7 @@ public class WebMReader {
 
     private Info readInfo(final Element ref) throws IOException {
         Element elem;
-        Info info = new Info();
+        final Info info = new Info();
 
         while ((elem = untilElement(ref, ID_TIMECODE_SCALE, ID_DURATION)) != null) {
             switch (elem.type) {
@@ -272,7 +272,7 @@ public class WebMReader {
 
     private Segment readSegment(final Element ref, final int trackLacingExpected,
                                 final boolean metadataExpected) throws IOException {
-        Segment obj = new Segment(ref);
+        final Segment obj = new Segment(ref);
         Element elem;
         while ((elem = untilElement(ref, ID_INFO, ID_TRACKS, ID_CLUSTER)) != null) {
             if (elem.type == ID_CLUSTER) {
@@ -300,11 +300,11 @@ public class WebMReader {
     }
 
     private WebMTrack[] readTracks(final Element ref, final int lacingExpected) throws IOException {
-        ArrayList<WebMTrack> trackEntries = new ArrayList<>(2);
+        final ArrayList<WebMTrack> trackEntries = new ArrayList<>(2);
         Element elemTrackEntry;
 
         while ((elemTrackEntry = untilElement(ref, ID_TRACK_ENTRY)) != null) {
-            WebMTrack entry = new WebMTrack();
+            final WebMTrack entry = new WebMTrack();
             boolean drop = false;
             Element elem;
             while ((elem = untilElement(elemTrackEntry)) != null) {
@@ -348,10 +348,10 @@ public class WebMReader {
             ensure(elemTrackEntry);
         }
 
-        WebMTrack[] entries = new WebMTrack[trackEntries.size()];
+        final WebMTrack[] entries = new WebMTrack[trackEntries.size()];
         trackEntries.toArray(entries);
 
-        for (WebMTrack entry : entries) {
+        for (final WebMTrack entry : entries) {
             switch (entry.trackType) {
                 case 1:
                     entry.kind = TrackKind.Video;
@@ -369,7 +369,7 @@ public class WebMReader {
     }
 
     private SimpleBlock readSimpleBlock(final Element ref) throws IOException {
-        SimpleBlock obj = new SimpleBlock(ref);
+        final SimpleBlock obj = new SimpleBlock(ref);
         obj.trackNumber = readEncodedNumber();
         obj.relativeTimeCode = stream.readShort();
         obj.flags = (byte) stream.read();
@@ -385,9 +385,9 @@ public class WebMReader {
     }
 
     private Cluster readCluster(final Element ref) throws IOException {
-        Cluster obj = new Cluster(ref);
+        final Cluster obj = new Cluster(ref);
 
-        Element elem = untilElement(ref, ID_TIMECODE);
+        final Element elem = untilElement(ref, ID_TIMECODE);
         if (elem == null) {
             throw new NoSuchElementException("Cluster at " + String.valueOf(ref.offset)
                     + " without Timecode element");
@@ -443,7 +443,7 @@ public class WebMReader {
             }
             ensure(segment.currentCluster);
 
-            Element elem = untilElement(segment.ref, ID_CLUSTER);
+            final Element elem = untilElement(segment.ref, ID_CLUSTER);
             if (elem == null) {
                 return null;
             }

app/src/main/java/org/schabi/newpipe/streams/WebMWriter.java

@@ -107,7 +107,7 @@ public class WebMWriter implements Closeable {
         done = true;
         parsed = true;
 
-        for (SharpStream src : sourceTracks) {
+        for (final SharpStream src : sourceTracks) {
             src.close();
         }
 
@@ -128,12 +128,12 @@ public class WebMWriter implements Closeable {
 
         makeEBML(out);
 
-        long offsetSegmentSizeSet = written + 5;
+        final long offsetSegmentSizeSet = written + 5;
-        long offsetInfoDurationSet = written + 94;
+        final long offsetInfoDurationSet = written + 94;
-        long offsetClusterSet = written + 58;
+        final long offsetClusterSet = written + 58;
-        long offsetCuesSet = written + 75;
+        final long offsetCuesSet = written + 75;
 
-        ArrayList<byte[]> listBuffer = new ArrayList<>(4);
+        final ArrayList<byte[]> listBuffer = new ArrayList<>(4);
 
         /* segment */
         listBuffer.add(new byte[]{
@@ -141,7 +141,7 @@ public class WebMWriter implements Closeable {
                 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00// segment content size
         });
 
-        long segmentOffset = written + listBuffer.get(0).length;
+        final long segmentOffset = written + listBuffer.get(0).length;
 
         /* seek head */
         listBuffer.add(new byte[]{
@@ -177,11 +177,11 @@ public class WebMWriter implements Closeable {
         dump(listBuffer, out);
 
         // reserve space for Cues element
-        long cueOffset = written;
+        final long cueOffset = written;
         makeEbmlVoid(out, CUE_RESERVE_SIZE, true);
 
-        int[] defaultSampleDuration = new int[infoTracks.length];
+        final int[] defaultSampleDuration = new int[infoTracks.length];
-        long[] duration = new long[infoTracks.length];
+        final long[] duration = new long[infoTracks.length];
 
         for (int i = 0; i < infoTracks.length; i++) {
             if (infoTracks[i].defaultDuration < 0) {
@@ -194,9 +194,9 @@ public class WebMWriter implements Closeable {
         }
 
         // Select a track for the cue
-        int cuesForTrackId = selectTrackForCue();
+        final int cuesForTrackId = selectTrackForCue();
         long nextCueTime = infoTracks[cuesForTrackId].trackType == 1 ? -1 : 0;
-        ArrayList<KeyFrame> keyFrames = new ArrayList<>(32);
+        final ArrayList<KeyFrame> keyFrames = new ArrayList<>(32);
 
         int firstClusterOffset = (int) written;
         long currentClusterOffset = makeCluster(out, 0, 0, true);
@@ -213,7 +213,7 @@ public class WebMWriter implements Closeable {
             blockWritten = 0;
             int i = 0;
             while (i < readers.length) {
-                Block bloq = getNextBlockFrom(i);
+                final Block bloq = getNextBlockFrom(i);
                 if (bloq == null) {
                     i++;
                     continue;
@@ -272,7 +272,7 @@ public class WebMWriter implements Closeable {
 
         makeCluster(out, -1, currentClusterOffset, false);
 
-        long segmentSize = written - offsetSegmentSizeSet - 7;
+        final long segmentSize = written - offsetSegmentSizeSet - 7;
 
         /* Segment size */
         seekTo(out, offsetSegmentSizeSet);
@@ -303,8 +303,8 @@ public class WebMWriter implements Closeable {
         short cueSize = 0;
         dump(new byte[]{0x1c, 0x53, (byte) 0xbb, 0x6b, 0x20, 0x00, 0x00}, out); // header size is 7
 
-        for (KeyFrame keyFrame : keyFrames) {
+        for (final KeyFrame keyFrame : keyFrames) {
-            int size = makeCuePoint(cuesForTrackId, keyFrame, outBuffer);
+            final int size = makeCuePoint(cuesForTrackId, keyFrame, outBuffer);
 
             if ((cueSize + size + 7 + MINIMUM_EBML_VOID_SIZE) > CUE_RESERVE_SIZE) {
                 break; // no space left
@@ -323,7 +323,7 @@ public class WebMWriter implements Closeable {
         /* seek head, seek for cues element */
         writeInt(out, offsetCuesSet, (int) (cueOffset - segmentOffset));
 
-        for (ClusterInfo cluster : clustersOffsetsSizes) {
+        for (final ClusterInfo cluster : clustersOffsetsSizes) {
             writeInt(out, cluster.offset, cluster.size | 0x10000000);
         }
     }
@@ -344,13 +344,13 @@ public class WebMWriter implements Closeable {
             }
         }
 
-        SimpleBlock res = readersCluster[internalTrackId].getNextSimpleBlock();
+        final SimpleBlock res = readersCluster[internalTrackId].getNextSimpleBlock();
         if (res == null) {
             readersCluster[internalTrackId] = null;
             return new Block(); // fake block to indicate the end of the cluster
         }
 
-        Block bloq = new Block();
+        final Block bloq = new Block();
         bloq.data = res.data;
         bloq.dataSize = res.dataSize;
         bloq.trackNumber = internalTrackId;
@@ -384,13 +384,13 @@ public class WebMWriter implements Closeable {
 
     private void writeBlock(final SharpStream stream, final Block bloq, final long clusterTimecode)
             throws IOException {
-        long relativeTimeCode = bloq.absoluteTimecode - clusterTimecode;
+        final long relativeTimeCode = bloq.absoluteTimecode - clusterTimecode;
 
         if (relativeTimeCode < Short.MIN_VALUE || relativeTimeCode > Short.MAX_VALUE) {
             throw new IndexOutOfBoundsException("SimpleBlock timecode overflow.");
         }
 
-        ArrayList<byte[]> listBuffer = new ArrayList<>(5);
+        final ArrayList<byte[]> listBuffer = new ArrayList<>(5);
         listBuffer.add(new byte[]{(byte) 0xa3});
         listBuffer.add(null); // block size
         listBuffer.add(encode(bloq.trackNumber + 1, false));
@@ -458,7 +458,7 @@ public class WebMWriter implements Closeable {
     }
 
     private ArrayList<byte[]> makeTracks() {
-        ArrayList<byte[]> buffer = new ArrayList<>(1);
+        final ArrayList<byte[]> buffer = new ArrayList<>(1);
         buffer.add(new byte[]{0x16, 0x54, (byte) 0xae, 0x6b});
         buffer.add(null);
 
@@ -470,8 +470,8 @@ public class WebMWriter implements Closeable {
     }
 
     private ArrayList<byte[]> makeTrackEntry(final int internalTrackId, final WebMTrack track) {
-        byte[] id = encode(internalTrackId + 1, true);
+        final byte[] id = encode(internalTrackId + 1, true);
-        ArrayList<byte[]> buffer = new ArrayList<>(12);
+        final ArrayList<byte[]> buffer = new ArrayList<>(12);
 
         /* track */
         buffer.add(new byte[]{(byte) 0xae});
@@ -536,7 +536,7 @@ public class WebMWriter implements Closeable {
 
     private int makeCuePoint(final int internalTrackId, final KeyFrame keyFrame,
                              final byte[] buffer) {
-        ArrayList<byte[]> cue = new ArrayList<>(5);
+        final ArrayList<byte[]> cue = new ArrayList<>(5);
 
         /* CuePoint */
         cue.add(new byte[]{(byte) 0xbb});
@@ -552,7 +552,7 @@ public class WebMWriter implements Closeable {
         int size = 0;
         lengthFor(cue);
 
-        for (byte[] buff : cue) {
+        for (final byte[] buff : cue) {
             System.arraycopy(buff, 0, buffer, size, buff.length);
             size += buff.length;
         }
@@ -562,7 +562,7 @@ public class WebMWriter implements Closeable {
 
     private ArrayList<byte[]> makeCueTrackPosition(final int internalTrackId,
                                                    final KeyFrame keyFrame) {
-        ArrayList<byte[]> buffer = new ArrayList<>(8);
+        final ArrayList<byte[]> buffer = new ArrayList<>(8);
 
         /* CueTrackPositions */
         buffer.add(new byte[]{(byte) 0xb7});
@@ -598,7 +598,7 @@ public class WebMWriter implements Closeable {
         if (wipe) {
             size -= 4;
             while (size > 0) {
-                int write = Math.min(size, outBuffer.length);
+                final int write = Math.min(size, outBuffer.length);
                 dump(outBuffer, write, out);
                 size -= write;
             }
@@ -617,7 +617,7 @@ public class WebMWriter implements Closeable {
 
     private void dump(final ArrayList<byte[]> buffers, final SharpStream stream)
             throws IOException {
-        for (byte[] buffer : buffers) {
+        for (final byte[] buffer : buffers) {
             stream.write(buffer);
             written += buffer.length;
         }
@@ -649,9 +649,9 @@ public class WebMWriter implements Closeable {
             length++;
         }
 
-        int offset = withLength ? 1 : 0;
+        final int offset = withLength ? 1 : 0;
-        byte[] buffer = new byte[offset + length];
+        final byte[] buffer = new byte[offset + length];
-        long marker = (long) Math.floor((length - 1f) / 8f);
+        final long marker = (long) Math.floor((length - 1f) / 8f);
 
         int shift = 0;
         for (int i = length - 1; i >= 0; i--, shift += 8) {
@@ -670,10 +670,9 @@ public class WebMWriter implements Closeable {
     }
 
     private ArrayList<byte[]> encode(final String value) {
-        byte[] str;
+        final byte[] str = value.getBytes(StandardCharsets.UTF_8); // or use "utf-8"
-        str = value.getBytes(StandardCharsets.UTF_8); // or use "utf-8"
 
-        ArrayList<byte[]> buffer = new ArrayList<>(2);
+        final ArrayList<byte[]> buffer = new ArrayList<>(2);
         buffer.add(encode(str.length, false));
         buffer.add(str);
 
@@ -700,7 +699,7 @@ public class WebMWriter implements Closeable {
             }
         }
 
-        int kind;
+        final int kind;
         if (audioTracks == infoTracks.length) {
             kind = 2;
         } else if (videoTracks == infoTracks.length) {

app/src/main/java/org/schabi/newpipe/util/AnimationUtils.java

@@ -84,11 +84,11 @@ public final class AnimationUtils {
             String id;
             try {
                 id = view.getResources().getResourceEntryName(view.getId());
-            } catch (Exception e) {
+            } catch (final Exception e) {
                 id = view.getId() + "";
             }
 
-            String msg = String.format("%8s →  [%s:%s] [%s %s:%s] execOnEnd=%s", enterOrExit,
+            final String msg = String.format("%8s →  [%s:%s] [%s %s:%s] execOnEnd=%s", enterOrExit,
                     view.getClass().getSimpleName(), id, animationType, duration, delay, execOnEnd);
             Log.d(TAG, "animateView()" + msg);
         }
@@ -158,7 +158,7 @@ public final class AnimationUtils {
         }
 
         final int[][] empty = new int[][]{new int[0]};
-        ValueAnimator viewPropertyAnimator = ValueAnimator
+        final ValueAnimator viewPropertyAnimator = ValueAnimator
                 .ofObject(new ArgbEvaluator(), colorStart, colorEnd);
         viewPropertyAnimator.setInterpolator(new FastOutSlowInInterpolator());
         viewPropertyAnimator.setDuration(duration);
@@ -201,7 +201,7 @@ public final class AnimationUtils {
                     + "colorStart = [" + colorStart + "], colorEnd = [" + colorEnd + "]");
         }
 
-        ValueAnimator viewPropertyAnimator = ValueAnimator
+        final ValueAnimator viewPropertyAnimator = ValueAnimator
                 .ofObject(new ArgbEvaluator(), colorStart, colorEnd);
         viewPropertyAnimator.setInterpolator(new FastOutSlowInInterpolator());
         viewPropertyAnimator.setDuration(duration);
@@ -233,7 +233,7 @@ public final class AnimationUtils {
                     + "from " + height + " to → " + targetHeight + " in: " + view);
         }
 
-        ValueAnimator animator = ValueAnimator.ofFloat(height, targetHeight);
+        final ValueAnimator animator = ValueAnimator.ofFloat(height, targetHeight);
         animator.setInterpolator(new FastOutSlowInInterpolator());
         animator.setDuration(duration);
         animator.addUpdateListener(animation -> {
@@ -462,7 +462,7 @@ public final class AnimationUtils {
     public static void slideUp(final View view, final long duration, final long delay,
                                @FloatRange(from = 0.0f, to = 1.0f)
                                final float translationPercent) {
-        int translationY = (int) (view.getResources().getDisplayMetrics().heightPixels
+        final int translationY = (int) (view.getResources().getDisplayMetrics().heightPixels
                 * (translationPercent));
 
         view.animate().setListener(null).cancel();

app/src/main/java/org/schabi/newpipe/util/BitmapUtils.java

@@ -14,14 +14,14 @@ public final class BitmapUtils {
             return null;
         }
 
-        float sourceWidth = inputBitmap.getWidth();
+        final float sourceWidth = inputBitmap.getWidth();
-        float sourceHeight = inputBitmap.getHeight();
+        final float sourceHeight = inputBitmap.getHeight();
 
-        float xScale = newWidth / sourceWidth;
+        final float xScale = newWidth / sourceWidth;
-        float yScale = newHeight / sourceHeight;
+        final float yScale = newHeight / sourceHeight;
 
-        float newXScale;
+        final float newXScale;
-        float newYScale;
+        final float newYScale;
 
         if (yScale > xScale) {
             newXScale = xScale / yScale;
@@ -31,15 +31,14 @@ public final class BitmapUtils {
             newYScale = yScale / xScale;
         }
 
-        float scaledWidth = newXScale * sourceWidth;
+        final float scaledWidth = newXScale * sourceWidth;
-        float scaledHeight = newYScale * sourceHeight;
+        final float scaledHeight = newYScale * sourceHeight;
 
-        int left = (int) ((sourceWidth - scaledWidth) / 2);
+        final int left = (int) ((sourceWidth - scaledWidth) / 2);
-        int top = (int) ((sourceHeight - scaledHeight) / 2);
+        final int top = (int) ((sourceHeight - scaledHeight) / 2);
-        int width = (int) scaledWidth;
+        final int width = (int) scaledWidth;
-        int height = (int) scaledHeight;
+        final int height = (int) scaledHeight;
 
         return Bitmap.createBitmap(inputBitmap, left, top, width, height);
     }
-
 }

app/src/main/java/org/schabi/newpipe/util/CommentTextOnTouchListener.java

@@ -37,12 +37,12 @@ public class CommentTextOnTouchListener implements View.OnTouchListener {
         if (!(v instanceof TextView)) {
             return false;
         }
-        TextView widget = (TextView) v;
+        final TextView widget = (TextView) v;
-        Object text = widget.getText();
+        final Object text = widget.getText();
         if (text instanceof Spanned) {
-            Spannable buffer = (Spannable) text;
+            final Spannable buffer = (Spannable) text;
 
-            int action = event.getAction();
+            final int action = event.getAction();
 
             if (action == MotionEvent.ACTION_UP
                     || action == MotionEvent.ACTION_DOWN) {
@@ -55,11 +55,11 @@ public class CommentTextOnTouchListener implements View.OnTouchListener {
                 x += widget.getScrollX();
                 y += widget.getScrollY();
 
-                Layout layout = widget.getLayout();
+                final Layout layout = widget.getLayout();
-                int line = layout.getLineForVertical(y);
+                final int line = layout.getLineForVertical(y);
-                int off = layout.getOffsetForHorizontal(line, x);
+                final int off = layout.getOffsetForHorizontal(line, x);
 
-                ClickableSpan[] link = buffer.getSpans(off, off,
+                final ClickableSpan[] link = buffer.getSpans(off, off,
                         ClickableSpan.class);
 
                 if (link.length != 0) {
@@ -86,17 +86,17 @@ public class CommentTextOnTouchListener implements View.OnTouchListener {
     private boolean handleUrl(final Context context, final URLSpan urlSpan) {
         String url = urlSpan.getURL();
         int seconds = -1;
-        Matcher matcher = TIMESTAMP_PATTERN.matcher(url);
+        final Matcher matcher = TIMESTAMP_PATTERN.matcher(url);
         if (matcher.matches()) {
             url = matcher.group(1);
             seconds = Integer.parseInt(matcher.group(2));
         }
-        StreamingService service;
+        final StreamingService service;
-        StreamingService.LinkType linkType;
+        final StreamingService.LinkType linkType;
         try {
             service = NewPipe.getServiceByUrl(url);
             linkType = service.getLinkTypeByUrl(url);
-        } catch (ExtractionException e) {
+        } catch (final ExtractionException e) {
             return false;
         }
         if (linkType == StreamingService.LinkType.NONE) {
@@ -112,18 +112,20 @@ public class CommentTextOnTouchListener implements View.OnTouchListener {
 
     private boolean playOnPopup(final Context context, final String url,
                                 final StreamingService service, final int seconds) {
-        LinkHandlerFactory factory = service.getStreamLHFactory();
+        final LinkHandlerFactory factory = service.getStreamLHFactory();
-        String cleanUrl = null;
+        final String cleanUrl;
         try {
             cleanUrl = factory.getUrl(factory.getId(url));
-        } catch (ParsingException e) {
+        } catch (final ParsingException e) {
             return false;
         }
-        Single single = ExtractorHelper.getStreamInfo(service.getServiceId(), cleanUrl, false);
+        final Single single
+                = ExtractorHelper.getStreamInfo(service.getServiceId(), cleanUrl, false);
         single.subscribeOn(Schedulers.io())
                 .observeOn(AndroidSchedulers.mainThread())
                 .subscribe(info -> {
-                    PlayQueue playQueue = new SinglePlayQueue((StreamInfo) info, seconds * 1000);
+                    final PlayQueue playQueue
+                            = new SinglePlayQueue((StreamInfo) info, seconds * 1000);
                     NavigationHelper.playOnPopupPlayer(context, playQueue, false);
                 });
         return true;

app/src/main/java/org/schabi/newpipe/util/CookieUtils.java

@@ -12,8 +12,8 @@ public final class CookieUtils {
     }
 
     public static String concatCookies(final Collection<String> cookieStrings) {
-        Set<String> cookieSet = new HashSet<>();
+        final Set<String> cookieSet = new HashSet<>();
-        for (String cookies : cookieStrings) {
+        for (final String cookies : cookieStrings) {
             cookieSet.addAll(splitCookies(cookies));
         }
         return TextUtils.join("; ", cookieSet).trim();

app/src/main/java/org/schabi/newpipe/util/DeviceUtils.java

@@ -27,7 +27,7 @@ public final class DeviceUtils {
             return isTV;
         }
 
-        PackageManager pm = App.getApp().getPackageManager();
+        final PackageManager pm = App.getApp().getPackageManager();
 
         // from doc: https://developer.android.com/training/tv/start/hardware.html#runtime-check
         boolean isTv = ((UiModeManager) context.getSystemService(UI_MODE_SERVICE))
@@ -37,7 +37,8 @@ public final class DeviceUtils {
 
         // from https://stackoverflow.com/a/58932366
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
-            boolean isBatteryAbsent = ((BatteryManager) context.getSystemService(BATTERY_SERVICE))
+            final boolean isBatteryAbsent
+                    = ((BatteryManager) context.getSystemService(BATTERY_SERVICE))
                     .getIntProperty(BatteryManager.BATTERY_PROPERTY_CAPACITY) == 0;
             isTv = isTv || (isBatteryAbsent
                     && !pm.hasSystemFeature(PackageManager.FEATURE_TOUCHSCREEN)