Merge pull request #3426 from ByteHamster/feedinfo-fragment

Feedinfo page animation

app/build.gradle

@@ -139,10 +139,6 @@ dependencies {
     implementation "com.android.support:recyclerview-v7:$supportVersion"
     compileOnly 'com.google.android.wearable:wearable:2.2.0'
 
-    // ViewModel and LiveData
-    implementation "android.arch.lifecycle:extensions:$lifecycle_version"
-    annotationProcessor "android.arch.lifecycle:compiler:$lifecycle_version"
-
     implementation "org.apache.commons:commons-lang3:$commonslangVersion"
     implementation "commons-io:commons-io:$commonsioVersion"
     implementation "org.jsoup:jsoup:$jsoupVersion"

app/src/main/AndroidManifest.xml

@@ -105,17 +105,6 @@
                 android:value="de.danoeh.antennapod.activity.MainActivity"/>
         </activity>
 
-        <activity
-                android:name=".activity.FeedInfoActivity"
-                android:label="@string/feed_info_label">
-        </activity>
-
-        <activity
-                android:name=".activity.FeedSettingsActivity"
-                android:windowSoftInputMode="stateHidden"
-                android:label="@string/feed_settings_label">
-        </activity>
-
         <service
             android:name=".core.service.PlayerWidgetJobService"
             android:permission="android.permission.BIND_JOB_SERVICE"

app/src/main/java/de/danoeh/antennapod/activity/FeedInfoActivity.java

@@ -1,225 +0,0 @@
-package de.danoeh.antennapod.activity;
-
-import android.content.ClipData;
-import android.content.Context;
-import android.content.Intent;
-import android.graphics.LightingColorFilter;
-import android.net.Uri;
-import android.os.Bundle;
-import android.support.v7.app.AppCompatActivity;
-import android.text.TextUtils;
-import android.util.Log;
-import android.view.Menu;
-import android.view.MenuInflater;
-import android.view.MenuItem;
-import android.view.View;
-import android.widget.ImageView;
-import android.widget.TextView;
-import android.widget.Toast;
-
-import com.bumptech.glide.Glide;
-import com.bumptech.glide.request.RequestOptions;
-import com.joanzapata.iconify.Iconify;
-
-import org.apache.commons.lang3.StringUtils;
-import org.jsoup.Jsoup;
-import org.jsoup.nodes.Document;
-
-import de.danoeh.antennapod.R;
-import de.danoeh.antennapod.core.dialog.DownloadRequestErrorDialogCreator;
-import de.danoeh.antennapod.core.feed.Feed;
-import de.danoeh.antennapod.core.glide.ApGlideSettings;
-import de.danoeh.antennapod.core.glide.FastBlurTransformation;
-import de.danoeh.antennapod.core.preferences.UserPreferences;
-import de.danoeh.antennapod.core.storage.DBReader;
-import de.danoeh.antennapod.core.storage.DownloadRequestException;
-import de.danoeh.antennapod.core.util.IntentUtils;
-import de.danoeh.antennapod.core.util.LangUtils;
-import de.danoeh.antennapod.core.util.syndication.HtmlToPlainText;
-import de.danoeh.antennapod.menuhandler.FeedMenuHandler;
-import io.reactivex.Maybe;
-import io.reactivex.MaybeOnSubscribe;
-import io.reactivex.android.schedulers.AndroidSchedulers;
-import io.reactivex.disposables.Disposable;
-import io.reactivex.schedulers.Schedulers;
-
-/**
- * Displays information about a feed.
- */
-public class FeedInfoActivity extends AppCompatActivity {
-
-    public static final String EXTRA_FEED_ID = "de.danoeh.antennapod.extra.feedId";
-    private static final String TAG = "FeedInfoActivity";
-    private Feed feed;
-
-    private ImageView imgvCover;
-    private TextView txtvTitle;
-    private TextView txtvDescription;
-    private TextView lblLanguage;
-    private TextView txtvLanguage;
-    private TextView lblAuthor;
-    private TextView txtvAuthor;
-    private TextView txtvUrl;
-
-    private Disposable disposable;
-
-
-    private final View.OnClickListener copyUrlToClipboard = new View.OnClickListener() {
-        @Override
-        public void onClick(View v) {
-            if(feed != null && feed.getDownload_url() != null) {
-                String url = feed.getDownload_url();
-                ClipData clipData = ClipData.newPlainText(url, url);
-                android.content.ClipboardManager cm = (android.content.ClipboardManager) FeedInfoActivity.this
-                        .getSystemService(Context.CLIPBOARD_SERVICE);
-                cm.setPrimaryClip(clipData);
-                Toast t = Toast.makeText(FeedInfoActivity.this, R.string.copied_url_msg, Toast.LENGTH_SHORT);
-                t.show();
-            }
-        }
-    };
-
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        setTheme(UserPreferences.getTheme());
-        super.onCreate(savedInstanceState);
-        setContentView(R.layout.feedinfo);
-        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
-        long feedId = getIntent().getLongExtra(EXTRA_FEED_ID, -1);
-
-        imgvCover = findViewById(R.id.imgvCover);
-        txtvTitle = findViewById(R.id.txtvTitle);
-        TextView txtvAuthorHeader = findViewById(R.id.txtvAuthor);
-        ImageView imgvBackground = findViewById(R.id.imgvBackground);
-        findViewById(R.id.butShowInfo).setVisibility(View.INVISIBLE);
-        findViewById(R.id.butShowSettings).setVisibility(View.INVISIBLE);
-        // https://github.com/bumptech/glide/issues/529
-        imgvBackground.setColorFilter(new LightingColorFilter(0xff828282, 0x000000));
-
-
-        txtvDescription = findViewById(R.id.txtvDescription);
-        lblLanguage = findViewById(R.id.lblLanguage);
-        txtvLanguage = findViewById(R.id.txtvLanguage);
-        lblAuthor = findViewById(R.id.lblAuthor);
-        txtvAuthor = findViewById(R.id.txtvDetailsAuthor);
-        txtvUrl = findViewById(R.id.txtvUrl);
-
-        txtvUrl.setOnClickListener(copyUrlToClipboard);
-
-        disposable = Maybe.create((MaybeOnSubscribe<Feed>) emitter -> {
-            Feed feed = DBReader.getFeed(feedId);
-            if (feed != null) {
-                emitter.onSuccess(feed);
-            } else {
-                emitter.onComplete();
-            }
-        })
-                .subscribeOn(Schedulers.io())
-                .observeOn(AndroidSchedulers.mainThread())
-                .subscribe(result -> {
-                    feed = result;
-                    Log.d(TAG, "Language is " + feed.getLanguage());
-                    Log.d(TAG, "Author is " + feed.getAuthor());
-                    Log.d(TAG, "URL is " + feed.getDownload_url());
-                    Glide.with(FeedInfoActivity.this)
-                            .load(feed.getImageLocation())
-                            .apply(new RequestOptions()
-                                .placeholder(R.color.light_gray)
-                                .error(R.color.light_gray)
-                                .diskCacheStrategy(ApGlideSettings.AP_DISK_CACHE_STRATEGY)
-                                .fitCenter()
-                                .dontAnimate())
-                            .into(imgvCover);
-                    Glide.with(FeedInfoActivity.this)
-                            .load(feed.getImageLocation())
-                            .apply(new RequestOptions()
-                                .placeholder(R.color.image_readability_tint)
-                                .error(R.color.image_readability_tint)
-                                .diskCacheStrategy(ApGlideSettings.AP_DISK_CACHE_STRATEGY)
-                                .transform(new FastBlurTransformation())
-                                .dontAnimate())
-                            .into(imgvBackground);
-
-                    txtvTitle.setText(feed.getTitle());
-
-                    String description = feed.getDescription();
-                    if(description != null) {
-                        if(Feed.TYPE_ATOM1.equals(feed.getType())) {
-                            HtmlToPlainText formatter = new HtmlToPlainText();
-                            Document feedDescription = Jsoup.parse(feed.getDescription());
-                            description = StringUtils.trim(formatter.getPlainText(feedDescription));
-                        }
-                    } else {
-                        description = "";
-                    }
-                    txtvDescription.setText(description);
-
-                    if (!TextUtils.isEmpty(feed.getAuthor())) {
-                        txtvAuthor.setText(feed.getAuthor());
-                        txtvAuthorHeader.setText(feed.getAuthor());
-                    } else {
-                        lblAuthor.setVisibility(View.GONE);
-                        txtvAuthor.setVisibility(View.GONE);
-                    }
-                    if (!TextUtils.isEmpty(feed.getLanguage())) {
-                        txtvLanguage.setText(LangUtils.getLanguageString(feed.getLanguage()));
-                    } else {
-                        lblLanguage.setVisibility(View.GONE);
-                        txtvLanguage.setVisibility(View.GONE);
-                    }
-                    txtvUrl.setText(feed.getDownload_url() + " {fa-paperclip}");
-                    Iconify.addIcons(txtvUrl);
-
-                    supportInvalidateOptionsMenu();
-                }, error -> {
-                    Log.d(TAG, Log.getStackTraceString(error));
-                    finish();
-                }, () -> {
-                    Log.e(TAG, "Activity was started with invalid arguments");
-                    finish();
-                });
-    }
-
-    @Override
-    public void onDestroy() {
-        super.onDestroy();
-        if (disposable != null) {
-            disposable.dispose();
-        }
-    }
-
-    @Override
-    public boolean onCreateOptionsMenu(Menu menu) {
-        super.onCreateOptionsMenu(menu);
-        MenuInflater inflater = getMenuInflater();
-        inflater.inflate(R.menu.feedinfo, menu);
-        return true;
-    }
-
-    @Override
-    public boolean onPrepareOptionsMenu(Menu menu) {
-        super.onPrepareOptionsMenu(menu);
-        menu.findItem(R.id.share_link_item).setVisible(feed != null && feed.getLink() != null);
-        menu.findItem(R.id.visit_website_item).setVisible(feed != null && feed.getLink() != null &&
-                IntentUtils.isCallable(this, new Intent(Intent.ACTION_VIEW, Uri.parse(feed.getLink()))));
-        return true;
-    }
-
-    @Override
-    public boolean onOptionsItemSelected(MenuItem item) {
-        switch (item.getItemId()) {
-            case android.R.id.home:
-                finish();
-                return true;
-            default:
-                try {
-                    return FeedMenuHandler.onOptionsItemClicked(this, item, feed);
-                } catch (DownloadRequestException e) {
-                    e.printStackTrace();
-                    DownloadRequestErrorDialogCreator.newRequestErrorDialog(this,
-                            e.getMessage());
-                }
-                return super.onOptionsItemSelected(item);
-        }
-    }
-}

app/src/main/java/de/danoeh/antennapod/activity/FeedSettingsActivity.java

@@ -1,130 +0,0 @@
-package de.danoeh.antennapod.activity;
-
-import android.arch.lifecycle.ViewModelProviders;
-import android.graphics.LightingColorFilter;
-import android.os.Bundle;
-import android.support.v4.app.FragmentManager;
-import android.support.v4.app.FragmentTransaction;
-import android.support.v7.app.AppCompatActivity;
-import android.text.TextUtils;
-import android.util.Log;
-import android.view.MenuItem;
-import android.view.View;
-import android.widget.ImageView;
-import android.widget.TextView;
-import com.bumptech.glide.Glide;
-import com.bumptech.glide.request.RequestOptions;
-import de.danoeh.antennapod.R;
-import de.danoeh.antennapod.core.feed.Feed;
-import de.danoeh.antennapod.core.glide.ApGlideSettings;
-import de.danoeh.antennapod.core.glide.FastBlurTransformation;
-import de.danoeh.antennapod.core.preferences.UserPreferences;
-import de.danoeh.antennapod.fragment.FeedSettingsFragment;
-import de.danoeh.antennapod.viewmodel.FeedSettingsViewModel;
-import io.reactivex.android.schedulers.AndroidSchedulers;
-import io.reactivex.disposables.Disposable;
-import io.reactivex.schedulers.Schedulers;
-
-/**
- * Displays information about a feed.
- */
-public class FeedSettingsActivity extends AppCompatActivity {
-    public static final String EXTRA_FEED_ID = "de.danoeh.antennapod.extra.feedId";
-    private static final String TAG = "FeedSettingsActivity";
-    private Feed feed;
-    private Disposable disposable;
-    private ImageView imgvCover;
-    private TextView txtvTitle;
-    private ImageView imgvBackground;
-    private TextView txtvAuthorHeader;
-
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        setTheme(UserPreferences.getTheme());
-        super.onCreate(savedInstanceState);
-        setContentView(R.layout.feedsettings);
-        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
-
-        imgvCover = findViewById(R.id.imgvCover);
-        txtvTitle = findViewById(R.id.txtvTitle);
-        txtvAuthorHeader = findViewById(R.id.txtvAuthor);
-        imgvBackground = findViewById(R.id.imgvBackground);
-        findViewById(R.id.butShowInfo).setVisibility(View.INVISIBLE);
-        findViewById(R.id.butShowSettings).setVisibility(View.INVISIBLE);
-        // https://github.com/bumptech/glide/issues/529
-        imgvBackground.setColorFilter(new LightingColorFilter(0xff828282, 0x000000));
-
-        long feedId = getIntent().getLongExtra(EXTRA_FEED_ID, -1);
-        disposable = ViewModelProviders.of(this).get(FeedSettingsViewModel.class).getFeed(feedId)
-                .subscribeOn(Schedulers.io())
-                .observeOn(AndroidSchedulers.mainThread())
-                .subscribe(result -> {
-                    feed = result;
-                    showFragment();
-                    showHeader();
-                }, error -> {
-                    Log.d(TAG, Log.getStackTraceString(error));
-                    finish();
-                }, () -> {
-                    Log.e(TAG, "Activity was started with invalid arguments");
-                    finish();
-                });
-    }
-
-    private void showFragment() {
-        FeedSettingsFragment fragment = new FeedSettingsFragment();
-        fragment.setArguments(getIntent().getExtras());
-
-        FragmentManager fragmentManager = getSupportFragmentManager();
-        FragmentTransaction fragmentTransaction =
-                fragmentManager.beginTransaction();
-        fragmentTransaction.replace(R.id.settings_fragment_container, fragment);
-        fragmentTransaction.commit();
-    }
-
-    private void showHeader() {
-        txtvTitle.setText(feed.getTitle());
-
-        if (!TextUtils.isEmpty(feed.getAuthor())) {
-            txtvAuthorHeader.setText(feed.getAuthor());
-        }
-
-        Glide.with(FeedSettingsActivity.this)
-                .load(feed.getImageLocation())
-                .apply(new RequestOptions()
-                        .placeholder(R.color.light_gray)
-                        .error(R.color.light_gray)
-                        .diskCacheStrategy(ApGlideSettings.AP_DISK_CACHE_STRATEGY)
-                        .fitCenter()
-                        .dontAnimate())
-                .into(imgvCover);
-        Glide.with(FeedSettingsActivity.this)
-                .load(feed.getImageLocation())
-                .apply(new RequestOptions()
-                        .placeholder(R.color.image_readability_tint)
-                        .error(R.color.image_readability_tint)
-                        .diskCacheStrategy(ApGlideSettings.AP_DISK_CACHE_STRATEGY)
-                        .transform(new FastBlurTransformation())
-                        .dontAnimate())
-                .into(imgvBackground);
-    }
-
-    @Override
-    public void onDestroy() {
-        super.onDestroy();
-        if (disposable != null) {
-            disposable.dispose();
-        }
-    }
-
-    @Override
-    public boolean onOptionsItemSelected(MenuItem item) {
-        switch (item.getItemId()) {
-            case android.R.id.home:
-                finish();
-                return true;
-            default:
-                return super.onOptionsItemSelected(item);
-        }
-    }
-}

app/src/main/java/de/danoeh/antennapod/activity/MainActivity.java

@@ -69,6 +69,7 @@ import de.danoeh.antennapod.fragment.FeedItemlistFragment;
 import de.danoeh.antennapod.fragment.PlaybackHistoryFragment;
 import de.danoeh.antennapod.fragment.QueueFragment;
 import de.danoeh.antennapod.fragment.SubscriptionFragment;
+import de.danoeh.antennapod.fragment.TransitionEffect;
 import de.danoeh.antennapod.menuhandler.NavDrawerActivity;
 import de.danoeh.antennapod.preferences.PreferenceUpgrader;
 import io.reactivex.Observable;
@@ -377,15 +378,34 @@ public class MainActivity extends CastEnabledActivity implements NavDrawerActivi
         }
     }
 
-    public void loadChildFragment(Fragment fragment) {
+    public void loadChildFragment(Fragment fragment, TransitionEffect transition) {
         Validate.notNull(fragment);
-        FragmentManager fm = getSupportFragmentManager();
+        FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
-        fm.beginTransaction()
+
-                .replace(R.id.main_view, fragment, "main")
+        switch (transition) {
+            case FADE:
+                transaction.setCustomAnimations(R.anim.fade_in, R.anim.fade_out);
+                break;
+            case FLIP:
+                transaction.setCustomAnimations(
+                    R.anim.card_flip_left_in,
+                    R.anim.card_flip_left_out,
+                    R.anim.card_flip_right_in,
+                    R.anim.card_flip_right_out);
+                break;
+        }
+
+        transaction
+                .hide(getSupportFragmentManager().findFragmentByTag("main"))
+                .add(R.id.main_view, fragment, "main")
                 .addToBackStack(null)
                 .commit();
     }
 
+    public void loadChildFragment(Fragment fragment) {
+        loadChildFragment(fragment, TransitionEffect.NONE);
+    }
+
     public void dismissChildFragment() {
         getSupportFragmentManager().popBackStack();
     }

app/src/main/java/de/danoeh/antennapod/fragment/FeedInfoFragment.java

@@ -0,0 +1,234 @@
+package de.danoeh.antennapod.fragment;
+
+import android.content.ClipData;
+import android.content.Context;
+import android.content.Intent;
+import android.graphics.LightingColorFilter;
+import android.net.Uri;
+import android.os.Bundle;
+import android.support.annotation.NonNull;
+import android.support.annotation.Nullable;
+import android.support.v4.app.Fragment;
+import android.text.TextUtils;
+import android.util.Log;
+import android.view.LayoutInflater;
+import android.view.Menu;
+import android.view.MenuInflater;
+import android.view.MenuItem;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ImageView;
+import android.widget.TextView;
+import android.widget.Toast;
+import com.bumptech.glide.Glide;
+import com.bumptech.glide.request.RequestOptions;
+import com.joanzapata.iconify.Iconify;
+import de.danoeh.antennapod.R;
+import de.danoeh.antennapod.activity.MainActivity;
+import de.danoeh.antennapod.core.dialog.DownloadRequestErrorDialogCreator;
+import de.danoeh.antennapod.core.feed.Feed;
+import de.danoeh.antennapod.core.glide.ApGlideSettings;
+import de.danoeh.antennapod.core.glide.FastBlurTransformation;
+import de.danoeh.antennapod.core.storage.DBReader;
+import de.danoeh.antennapod.core.storage.DownloadRequestException;
+import de.danoeh.antennapod.core.util.IntentUtils;
+import de.danoeh.antennapod.core.util.LangUtils;
+import de.danoeh.antennapod.core.util.syndication.HtmlToPlainText;
+import de.danoeh.antennapod.menuhandler.FeedMenuHandler;
+import io.reactivex.Maybe;
+import io.reactivex.MaybeOnSubscribe;
+import io.reactivex.android.schedulers.AndroidSchedulers;
+import io.reactivex.disposables.Disposable;
+import io.reactivex.schedulers.Schedulers;
+import org.apache.commons.lang3.StringUtils;
+import org.jsoup.Jsoup;
+import org.jsoup.nodes.Document;
+
+/**
+ * Displays information about a feed.
+ */
+public class FeedInfoFragment extends Fragment {
+
+    private static final String EXTRA_FEED_ID = "de.danoeh.antennapod.extra.feedId";
+    private static final String TAG = "FeedInfoActivity";
+
+    private Feed feed;
+    private Disposable disposable;
+    private ImageView imgvCover;
+    private TextView txtvTitle;
+    private TextView txtvDescription;
+    private TextView lblLanguage;
+    private TextView txtvLanguage;
+    private TextView lblAuthor;
+    private TextView txtvAuthor;
+    private TextView txtvUrl;
+    private TextView txtvAuthorHeader;
+    private ImageView imgvBackground;
+
+    public static FeedInfoFragment newInstance(Feed feed) {
+        FeedInfoFragment fragment = new FeedInfoFragment();
+        Bundle arguments = new Bundle();
+        arguments.putLong(EXTRA_FEED_ID, feed.getId());
+        fragment.setArguments(arguments);
+        return fragment;
+    }
+
+    private final View.OnClickListener copyUrlToClipboard = new View.OnClickListener() {
+        @Override
+        public void onClick(View v) {
+            if(feed != null && feed.getDownload_url() != null) {
+                String url = feed.getDownload_url();
+                ClipData clipData = ClipData.newPlainText(url, url);
+                android.content.ClipboardManager cm = (android.content.ClipboardManager) getContext()
+                        .getSystemService(Context.CLIPBOARD_SERVICE);
+                cm.setPrimaryClip(clipData);
+                Toast t = Toast.makeText(getContext(), R.string.copied_url_msg, Toast.LENGTH_SHORT);
+                t.show();
+            }
+        }
+    };
+
+    @Override
+    public void onResume() {
+        super.onResume();
+        ((MainActivity)getActivity()).getSupportActionBar().setTitle(R.string.feed_info_label);
+    }
+
+    @Nullable
+    @Override
+    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
+        View root = inflater.inflate(R.layout.feedinfo, null);
+        setHasOptionsMenu(true);
+
+        imgvCover = root.findViewById(R.id.imgvCover);
+        txtvTitle = root.findViewById(R.id.txtvTitle);
+        txtvAuthorHeader = root.findViewById(R.id.txtvAuthor);
+        imgvBackground = root.findViewById(R.id.imgvBackground);
+        root.findViewById(R.id.butShowInfo).setVisibility(View.INVISIBLE);
+        root.findViewById(R.id.butShowSettings).setVisibility(View.INVISIBLE);
+        // https://github.com/bumptech/glide/issues/529
+        imgvBackground.setColorFilter(new LightingColorFilter(0xff828282, 0x000000));
+
+
+        txtvDescription = root.findViewById(R.id.txtvDescription);
+        lblLanguage = root.findViewById(R.id.lblLanguage);
+        txtvLanguage = root.findViewById(R.id.txtvLanguage);
+        lblAuthor = root.findViewById(R.id.lblAuthor);
+        txtvAuthor = root.findViewById(R.id.txtvDetailsAuthor);
+        txtvUrl = root.findViewById(R.id.txtvUrl);
+
+        txtvUrl.setOnClickListener(copyUrlToClipboard);
+        postponeEnterTransition();
+        return root;
+    }
+
+    @Override
+    public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
+        long feedId = getArguments().getLong(EXTRA_FEED_ID);
+        disposable = Maybe.create((MaybeOnSubscribe<Feed>) emitter -> {
+            Feed feed = DBReader.getFeed(feedId);
+            if (feed != null) {
+                emitter.onSuccess(feed);
+            } else {
+                emitter.onComplete();
+            }
+        })
+                .subscribeOn(Schedulers.io())
+                .observeOn(AndroidSchedulers.mainThread())
+                .subscribe(result -> {
+                            feed = result;
+                            showFeed();
+                        }, error -> Log.d(TAG, Log.getStackTraceString(error)),
+                        this::startPostponedEnterTransition);
+    }
+
+    private void showFeed() {
+        Log.d(TAG, "Language is " + feed.getLanguage());
+        Log.d(TAG, "Author is " + feed.getAuthor());
+        Log.d(TAG, "URL is " + feed.getDownload_url());
+        Glide.with(getContext())
+                .load(feed.getImageLocation())
+                .apply(new RequestOptions()
+                        .placeholder(R.color.light_gray)
+                        .error(R.color.light_gray)
+                        .diskCacheStrategy(ApGlideSettings.AP_DISK_CACHE_STRATEGY)
+                        .fitCenter()
+                        .dontAnimate())
+                .into(imgvCover);
+        Glide.with(getContext())
+                .load(feed.getImageLocation())
+                .apply(new RequestOptions()
+                        .placeholder(R.color.image_readability_tint)
+                        .error(R.color.image_readability_tint)
+                        .diskCacheStrategy(ApGlideSettings.AP_DISK_CACHE_STRATEGY)
+                        .transform(new FastBlurTransformation())
+                        .dontAnimate())
+                .into(imgvBackground);
+
+        txtvTitle.setText(feed.getTitle());
+
+        String description = feed.getDescription();
+        if(description != null) {
+            if(Feed.TYPE_ATOM1.equals(feed.getType())) {
+                HtmlToPlainText formatter = new HtmlToPlainText();
+                Document feedDescription = Jsoup.parse(feed.getDescription());
+                description = StringUtils.trim(formatter.getPlainText(feedDescription));
+            }
+        } else {
+            description = "";
+        }
+        txtvDescription.setText(description);
+
+        if (!TextUtils.isEmpty(feed.getAuthor())) {
+            txtvAuthor.setText(feed.getAuthor());
+            txtvAuthorHeader.setText(feed.getAuthor());
+        } else {
+            lblAuthor.setVisibility(View.GONE);
+            txtvAuthor.setVisibility(View.GONE);
+        }
+        if (!TextUtils.isEmpty(feed.getLanguage())) {
+            txtvLanguage.setText(LangUtils.getLanguageString(feed.getLanguage()));
+        } else {
+            lblLanguage.setVisibility(View.GONE);
+            txtvLanguage.setVisibility(View.GONE);
+        }
+        txtvUrl.setText(feed.getDownload_url() + " {fa-paperclip}");
+        Iconify.addIcons(txtvUrl);
+
+        getActivity().invalidateOptionsMenu();
+    }
+
+    @Override
+    public void onDestroy() {
+        super.onDestroy();
+        if (disposable != null) {
+            disposable.dispose();
+        }
+    }
+
+    @Override
+    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
+        super.onCreateOptionsMenu(menu, inflater);
+        inflater.inflate(R.menu.feedinfo, menu);
+    }
+
+    @Override
+    public void onPrepareOptionsMenu(Menu menu) {
+        super.onPrepareOptionsMenu(menu);
+        menu.findItem(R.id.share_link_item).setVisible(feed != null && feed.getLink() != null);
+        menu.findItem(R.id.visit_website_item).setVisible(feed != null && feed.getLink() != null &&
+                IntentUtils.isCallable(getContext(), new Intent(Intent.ACTION_VIEW, Uri.parse(feed.getLink()))));
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        boolean handled = false;
+        try {
+            handled = FeedMenuHandler.onOptionsItemClicked(getContext(), item, feed);
+        } catch (DownloadRequestException e) {
+            e.printStackTrace();
+            DownloadRequestErrorDialogCreator.newRequestErrorDialog(getContext(), e.getMessage());
+        }
+        return handled || super.onOptionsItemSelected(item);
+    }
+}

app/src/main/java/de/danoeh/antennapod/fragment/FeedItemlistFragment.java

@@ -38,8 +38,6 @@ import org.greenrobot.eventbus.ThreadMode;
 import java.util.List;
 
 import de.danoeh.antennapod.R;
-import de.danoeh.antennapod.activity.FeedInfoActivity;
-import de.danoeh.antennapod.activity.FeedSettingsActivity;
 import de.danoeh.antennapod.activity.MainActivity;
 import de.danoeh.antennapod.adapter.FeedItemlistAdapter;
 import de.danoeh.antennapod.core.asynctask.FeedRemover;
@@ -141,37 +139,33 @@ public class FeedItemlistFragment extends ListFragment {
     }
 
     @Override
-    public void onStart() {
+    public void onHiddenChanged(boolean hidden) {
-        super.onStart();
+        super.onHiddenChanged(hidden);
+        if (!hidden && getActivity() != null) {
+            ((MainActivity) getActivity()).getSupportActionBar().setTitle("");
+        }
+    }
+
+    @Override
+    public void onViewCreated(View view, Bundle savedInstanceState) {
+        super.onViewCreated(view, savedInstanceState);
+
+        registerForContextMenu(getListView());
+
         EventDistributor.getInstance().register(contentUpdate);
         EventBus.getDefault().register(this);
         loadItems();
     }
 
-    @Override
-    public void onResume() {
-        super.onResume();
-        ((MainActivity)getActivity()).getSupportActionBar().setTitle("");
-        updateProgressBarVisibility();
-    }
-
-    @Override
-    public void onStop() {
-        super.onStop();
-        EventDistributor.getInstance().unregister(contentUpdate);
-        EventBus.getDefault().unregister(this);
-        if(disposable != null) {
-            disposable.dispose();
-        }
-    }
-
     @Override
     public void onDestroyView() {
         super.onDestroyView();
-        resetViewState();
-    }
 
-    private void resetViewState() {
+        EventDistributor.getInstance().unregister(contentUpdate);
+        EventBus.getDefault().unregister(this);
+        if (disposable != null) {
+            disposable.dispose();
+        }
         adapter = null;
         listFooter = null;
     }
@@ -344,13 +338,6 @@ public class FeedItemlistFragment extends ListFragment {
         return FeedItemMenuHandler.onMenuItemClicked(this, item.getItemId(), selectedItem);
     }
 
-    @Override
-    public void onViewCreated(View view, Bundle savedInstanceState) {
-        super.onViewCreated(view, savedInstanceState);
-
-        registerForContextMenu(getListView());
-    }
-
     @Override
     public void onListItemClick(ListView l, View v, int position, long id) {
         if(adapter == null) {
@@ -429,8 +416,9 @@ public class FeedItemlistFragment extends ListFragment {
 
     }
 
-    private void onFragmentLoaded() {
+    private void displayList() {
-        if(!isVisible()) {
+        if (getView() == null) {
+            Log.e(TAG, "Required root view is not yet created. Stop binding data to UI.");
             return;
         }
         if (adapter == null) {
@@ -514,10 +502,8 @@ public class FeedItemlistFragment extends ListFragment {
         imgvCover.setOnClickListener(v -> showFeedInfo());
         butShowSettings.setOnClickListener(v -> {
             if (feed != null) {
-                Intent startIntent = new Intent(getActivity(), FeedSettingsActivity.class);
+                FeedSettingsFragment fragment = FeedSettingsFragment.newInstance(feed);
-                startIntent.putExtra(FeedSettingsActivity.EXTRA_FEED_ID,
+                ((MainActivity) getActivity()).loadChildFragment(fragment, TransitionEffect.FLIP);
-                        feed.getId());
-                startActivity(startIntent);
             }
         });
         headerCreated = true;
@@ -525,10 +511,8 @@ public class FeedItemlistFragment extends ListFragment {
 
     private void showFeedInfo() {
         if (feed != null) {
-            Intent startIntent = new Intent(getActivity(), FeedInfoActivity.class);
+            FeedInfoFragment fragment = FeedInfoFragment.newInstance(feed);
-            startIntent.putExtra(FeedInfoActivity.EXTRA_FEED_ID,
+            ((MainActivity) getActivity()).loadChildFragment(fragment, TransitionEffect.FLIP);
-                    feed.getId());
-            startActivity(startIntent);
         }
     }
 
@@ -634,7 +618,7 @@ public class FeedItemlistFragment extends ListFragment {
                 .observeOn(AndroidSchedulers.mainThread())
                 .subscribe(result -> {
                     feed = result.orElse(null);
-                    onFragmentLoaded();
+                    displayList();
                 }, error -> Log.e(TAG, Log.getStackTraceString(error)));
     }
 

app/src/main/java/de/danoeh/antennapod/fragment/FeedSettingsFragment.java

@@ -1,39 +1,66 @@
 package de.danoeh.antennapod.fragment;
 
-import android.arch.lifecycle.ViewModelProviders;
 import android.content.Context;
 import android.content.DialogInterface;
 import android.os.Bundle;
 import android.support.v14.preference.SwitchPreference;
 import android.support.v7.preference.ListPreference;
 import android.support.v7.preference.PreferenceFragmentCompat;
+import android.util.Log;
 import de.danoeh.antennapod.R;
+import de.danoeh.antennapod.activity.MainActivity;
 import de.danoeh.antennapod.core.dialog.ConfirmationDialog;
 import de.danoeh.antennapod.core.feed.Feed;
 import de.danoeh.antennapod.core.feed.FeedFilter;
 import de.danoeh.antennapod.core.feed.FeedPreferences;
 import de.danoeh.antennapod.core.preferences.UserPreferences;
+import de.danoeh.antennapod.core.storage.DBReader;
 import de.danoeh.antennapod.core.storage.DBWriter;
 import de.danoeh.antennapod.dialog.AuthenticationDialog;
 import de.danoeh.antennapod.dialog.EpisodeFilterDialog;
-import de.danoeh.antennapod.viewmodel.FeedSettingsViewModel;
+import io.reactivex.Maybe;
-
+import io.reactivex.MaybeOnSubscribe;
-import static de.danoeh.antennapod.activity.FeedSettingsActivity.EXTRA_FEED_ID;
+import io.reactivex.android.schedulers.AndroidSchedulers;
+import io.reactivex.disposables.Disposable;
+import io.reactivex.schedulers.Schedulers;
 
 public class FeedSettingsFragment extends PreferenceFragmentCompat {
     private static final CharSequence PREF_EPISODE_FILTER = "episodeFilter";
+    private static final String EXTRA_FEED_ID = "de.danoeh.antennapod.extra.feedId";
+    private static final String TAG = "FeedSettingsFragment";
+
     private Feed feed;
+    private Disposable disposable;
     private FeedPreferences feedPreferences;
 
+    public static FeedSettingsFragment newInstance(Feed feed) {
+        FeedSettingsFragment fragment = new FeedSettingsFragment();
+        Bundle arguments = new Bundle();
+        arguments.putLong(EXTRA_FEED_ID, feed.getId());
+        fragment.setArguments(arguments);
+        return fragment;
+    }
+
     @Override
     public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {
         addPreferencesFromResource(R.xml.feed_settings);
 
+        postponeEnterTransition();
         long feedId = getArguments().getLong(EXTRA_FEED_ID);
-        ViewModelProviders.of(getActivity()).get(FeedSettingsViewModel.class).getFeed(feedId)
+        disposable = Maybe.create((MaybeOnSubscribe<Feed>) emitter -> {
+            Feed feed = DBReader.getFeed(feedId);
+            if (feed != null) {
+                emitter.onSuccess(feed);
+            } else {
+                emitter.onComplete();
+            }
+        })
+                .subscribeOn(Schedulers.io())
+                .observeOn(AndroidSchedulers.mainThread())
                 .subscribe(result -> {
                     feed = result;
                     feedPreferences = feed.getPreferences();
+                    ((MainActivity) getActivity()).getSupportActionBar().setSubtitle(feed.getTitle());
 
                     setupAutoDownloadPreference();
                     setupKeepUpdatedPreference();
@@ -43,7 +70,31 @@ public class FeedSettingsFragment extends PreferenceFragmentCompat {
 
                     updateAutoDeleteSummary();
                     updateAutoDownloadEnabled();
-                }).dispose();
+                }, error -> Log.d(TAG, Log.getStackTraceString(error)),
+                this::startPostponedEnterTransition);
+    }
+
+    @Override
+    public void onResume() {
+        super.onResume();
+        ((MainActivity) getActivity()).getSupportActionBar().setTitle(R.string.feed_settings_label);
+        if (feed != null) {
+            ((MainActivity) getActivity()).getSupportActionBar().setSubtitle(feed.getTitle());
+        }
+    }
+
+    @Override
+    public void onStop() {
+        super.onStop();
+        ((MainActivity) getActivity()).getSupportActionBar().setSubtitle(null);
+    }
+
+    @Override
+    public void onDestroy() {
+        super.onDestroy();
+        if (disposable != null) {
+            disposable.dispose();
+        }
     }
 
     private void setupEpisodeFilterPreference() {

app/src/main/java/de/danoeh/antennapod/fragment/TransitionEffect.java

@@ -0,0 +1,5 @@
+package de.danoeh.antennapod.fragment;
+
+public enum TransitionEffect {
+    NONE, FLIP, FADE
+}

app/src/main/java/de/danoeh/antennapod/viewmodel/FeedSettingsViewModel.java

@@ -1,30 +0,0 @@
-package de.danoeh.antennapod.viewmodel;
-
-import android.arch.lifecycle.ViewModel;
-import de.danoeh.antennapod.core.feed.Feed;
-import de.danoeh.antennapod.core.storage.DBReader;
-import io.reactivex.Maybe;
-
-public class FeedSettingsViewModel extends ViewModel {
-    private Feed feed;
-
-    public Maybe<Feed> getFeed(long feedId) {
-        if (feed == null) {
-            return loadFeed(feedId);
-        } else {
-            return Maybe.just(feed);
-        }
-    }
-
-    private Maybe<Feed> loadFeed(long feedId) {
-        return Maybe.create(emitter -> {
-            Feed feed = DBReader.getFeed(feedId);
-            if (feed != null) {
-                this.feed = feed;
-                emitter.onSuccess(feed);
-            } else {
-                emitter.onComplete();
-            }
-        });
-    }
-}

app/src/main/res/anim/card_flip_left_in.xml

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?>
+<set xmlns:android="http://schemas.android.com/apk/res/android">
+    <!-- Before rotating, immediately set the alpha to 0. -->
+    <objectAnimator
+            android:valueFrom="1.0"
+            android:valueTo="0.0"
+            android:propertyName="alpha"
+            android:duration="0" />
+
+    <!-- Rotate. -->
+    <objectAnimator
+            android:valueFrom="-180"
+            android:valueTo="0"
+            android:propertyName="rotationY"
+            android:interpolator="@android:interpolator/accelerate_decelerate"
+            android:duration="@integer/card_flip_time_full" />
+
+    <!-- Half-way through the rotation (see startOffset), set the alpha to 1. -->
+    <objectAnimator
+            android:valueFrom="0.0"
+            android:valueTo="1.0"
+            android:propertyName="alpha"
+            android:startOffset="@integer/card_flip_time_half"
+            android:duration="1" />
+</set>

app/src/main/res/anim/card_flip_left_out.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<set xmlns:android="http://schemas.android.com/apk/res/android">
+    <!-- Rotate. -->
+    <objectAnimator
+            android:valueFrom="0"
+            android:valueTo="180"
+            android:propertyName="rotationY"
+            android:interpolator="@android:interpolator/accelerate_decelerate"
+            android:duration="@integer/card_flip_time_full" />
+
+    <!-- Half-way through the rotation (see startOffset), set the alpha to 0. -->
+    <objectAnimator
+            android:valueFrom="1.0"
+            android:valueTo="0.0"
+            android:propertyName="alpha"
+            android:startOffset="@integer/card_flip_time_half"
+            android:duration="1" />
+</set>

app/src/main/res/anim/card_flip_right_in.xml

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?>
+<set xmlns:android="http://schemas.android.com/apk/res/android">
+    <!-- Before rotating, immediately set the alpha to 0. -->
+    <objectAnimator
+            android:valueFrom="1.0"
+            android:valueTo="0.0"
+            android:propertyName="alpha"
+            android:duration="0" />
+
+    <!-- Rotate. -->
+    <objectAnimator
+            android:valueFrom="180"
+            android:valueTo="0"
+            android:propertyName="rotationY"
+            android:interpolator="@android:interpolator/accelerate_decelerate"
+            android:duration="@integer/card_flip_time_full" />
+
+    <!-- Half-way through the rotation (see startOffset), set the alpha to 1. -->
+    <objectAnimator
+            android:valueFrom="0.0"
+            android:valueTo="1.0"
+            android:propertyName="alpha"
+            android:startOffset="@integer/card_flip_time_half"
+            android:duration="1" />
+</set>

app/src/main/res/anim/card_flip_right_out.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<set xmlns:android="http://schemas.android.com/apk/res/android">
+    <!-- Rotate. -->
+    <objectAnimator
+            android:valueFrom="0"
+            android:valueTo="-180"
+            android:propertyName="rotationY"
+            android:interpolator="@android:interpolator/accelerate_decelerate"
+            android:duration="@integer/card_flip_time_full" />
+
+    <!-- Half-way through the rotation (see startOffset), set the alpha to 0. -->
+    <objectAnimator
+            android:valueFrom="1.0"
+            android:valueTo="0.0"
+            android:propertyName="alpha"
+            android:startOffset="@integer/card_flip_time_half"
+            android:duration="1" />
+</set>

app/src/main/res/values/integers.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <integer name="card_flip_time_full">400</integer>
+    <integer name="card_flip_time_half">200</integer>
+</resources>

build.gradle

@@ -45,7 +45,6 @@ project.ext {
     targetSdkVersion = 28
 
     supportVersion = "27.1.1"
-    lifecycle_version = "1.1.1"
     workManagerVersion = "1.0.1"
     awaitilityVersion = "3.1.2"
     commonsioVersion = "2.5"