Add search function to preferences

app/build.gradle

@@ -173,6 +173,7 @@ dependencies {
     implementation "com.github.AntennaPod:AntennaPod-AudioPlayer:$audioPlayerVersion"
 
     implementation 'com.github.mfietz:fyydlin:v0.3'
+    implementation 'com.github.ByteHamster:SearchPreference:v1.0.2'
 
     androidTestImplementation "com.jayway.android.robotium:robotium-solo:$robotiumSoloVersion"
 }

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

@@ -14,6 +14,9 @@ import android.widget.FrameLayout;
 
 import java.lang.ref.WeakReference;
 
+import com.bytehamster.lib.preferencesearch.SearchPreference;
+import com.bytehamster.lib.preferencesearch.SearchPreferenceResult;
+import com.bytehamster.lib.preferencesearch.SearchPreferenceResultListener;
 import de.danoeh.antennapod.R;
 import de.danoeh.antennapod.core.preferences.UserPreferences;
 import de.danoeh.antennapod.preferences.PreferenceController;
@@ -22,7 +25,7 @@ import de.danoeh.antennapod.preferences.PreferenceController;
  * PreferenceActivity for API 11+. In order to change the behavior of the preference UI, see
  * PreferenceController.
  */
-public class PreferenceActivity extends AppCompatActivity {
+public class PreferenceActivity extends AppCompatActivity implements SearchPreferenceResultListener {
 
     public static final String PARAM_RESOURCE = "resource";
     private static WeakReference<PreferenceActivity> instance;
@@ -35,6 +38,11 @@ public class PreferenceActivity extends AppCompatActivity {
             this.fragment = fragment;
         }
 
+        @Override
+        public PreferenceFragmentCompat getFragment() {
+            return fragment;
+        }
+
         @Override
         public Preference findPreference(CharSequence key) {
             return fragment.findPreference(key);
@@ -76,12 +84,21 @@ public class PreferenceActivity extends AppCompatActivity {
         // since the MainFragment depends on the preferenceController already being created
         preferenceController = new PreferenceController(preferenceUI);
 
+        showPreferenceScreen(R.xml.preferences, false);
+    }
+
+    private void showPreferenceScreen(int screen, boolean addHistory) {
         PreferenceFragmentCompat prefFragment = new MainFragment();
         preferenceUI.setFragment(prefFragment);
         Bundle args = new Bundle();
-        args.putInt(PARAM_RESOURCE, R.xml.preferences);
+        args.putInt(PARAM_RESOURCE, screen);
         prefFragment.setArguments(args);
-        getSupportFragmentManager().beginTransaction().replace(R.id.content, prefFragment).commit();
+        if (addHistory) {
+            getSupportFragmentManager().beginTransaction().replace(R.id.content, prefFragment)
+                    .addToBackStack(getString(PreferenceController.getTitleOfPage(screen))).commit();
+        } else {
+            getSupportFragmentManager().beginTransaction().replace(R.id.content, prefFragment).commit();
+        }
     }
 
     @Override
@@ -111,6 +128,12 @@ public class PreferenceActivity extends AppCompatActivity {
         }
     }
 
+    @Override
+    public void onSearchResultClicked(SearchPreferenceResult result) {
+        showPreferenceScreen(result.getResourceFile(), true);
+        result.highlight(preferenceUI.getFragment());
+    }
+
     public static class MainFragment extends PreferenceFragmentCompat {
         private int screen;
 
@@ -136,7 +159,7 @@ public class PreferenceActivity extends AppCompatActivity {
             super.onResume();
             PreferenceActivity activity = instance.get();
             if(activity != null && activity.preferenceController != null) {
-                activity.setTitle(activity.preferenceController.getTitleOfPage(screen));
+                activity.setTitle(PreferenceController.getTitleOfPage(screen));
                 activity.preferenceUI.setFragment(this);
                 activity.preferenceController.onResume(screen);
             }

app/src/main/java/de/danoeh/antennapod/preferences/PreferenceController.java

@@ -37,6 +37,7 @@ import android.widget.Toast;
 
 import com.afollestad.materialdialogs.MaterialDialog;
 
+import com.bytehamster.lib.preferencesearch.SearchPreference;
 import de.danoeh.antennapod.activity.AboutActivity;
 import de.danoeh.antennapod.activity.ImportExportActivity;
 import de.danoeh.antennapod.activity.MediaplayerActivity;
@@ -489,6 +490,7 @@ public class PreferenceController implements SharedPreferences.OnSharedPreferenc
 
     private void setupMainScreen() {
         final AppCompatActivity activity = ui.getActivity();
+        setupSearch();
         ui.findPreference(PREF_SCREEN_USER_INTERFACE).setOnPreferenceClickListener(preference -> {
             openScreen(R.xml.preferences_user_interface, activity);
             return true;
@@ -555,6 +557,25 @@ public class PreferenceController implements SharedPreferences.OnSharedPreferenc
         });
     }
 
+    private void setupSearch() {
+        final AppCompatActivity activity = ui.getActivity();
+
+        SearchPreference searchPreference = (SearchPreference) ui.findPreference("searchPreference");
+        searchPreference.setActivity(activity);
+        searchPreference.setFragmentContainerViewId(R.id.content);
+        searchPreference.setBreadcrumbsEnabled(true);
+
+        searchPreference.addResourceFileToIndex(R.xml.preferences_user_interface, getTitleOfPage(R.xml.preferences_user_interface));
+        searchPreference.addResourceFileToIndex(R.xml.preferences_playback, getTitleOfPage(R.xml.preferences_playback));
+        searchPreference.addResourceFileToIndex(R.xml.preferences_network, getTitleOfPage(R.xml.preferences_network));
+        searchPreference.addResourceFileToIndex(R.xml.preferences_storage, getTitleOfPage(R.xml.preferences_storage));
+        String integrations = activity.getString(getTitleOfPage(R.xml.preferences_integrations));
+        String flattr = activity.getString(getTitleOfPage(R.xml.preferences_flattr));
+        String gpodder = activity.getString(getTitleOfPage(R.xml.preferences_gpodder));
+        searchPreference.addResourceFileToIndex(R.xml.preferences_flattr, integrations + " > " + flattr);
+        searchPreference.addResourceFileToIndex(R.xml.preferences_gpodder, integrations + " > " + gpodder);
+    }
+
     public PreferenceFragmentCompat openScreen(int preferences, AppCompatActivity activity) {
         PreferenceFragmentCompat prefFragment = new PreferenceActivity.MainFragment();
         Bundle args = new Bundle();
@@ -566,7 +587,7 @@ public class PreferenceController implements SharedPreferences.OnSharedPreferenc
         return prefFragment;
     }
 
-    public int getTitleOfPage(int preferences) {
+    public static int getTitleOfPage(int preferences) {
         switch (preferences) {
             case R.xml.preferences_network:
                 return R.string.network_pref;
@@ -1152,6 +1173,7 @@ public class PreferenceController implements SharedPreferences.OnSharedPreferenc
     public interface PreferenceUI {
 
         void setFragment(PreferenceFragmentCompat fragment);
+        PreferenceFragmentCompat getFragment();
 
         /**
          * Finds a preference based on its key.

app/src/main/res/xml/preferences.xml

@@ -1,10 +1,14 @@
 <?xml version="1.0" encoding="utf-8"?>
 <PreferenceScreen
     xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <com.bytehamster.lib.preferencesearch.SearchPreference
+            android:key="searchPreference" />
+
     <Preference
-        android:key="prefScreenInterface"
-        android:title="@string/user_interface_label"
-        android:icon="?attr/type_video" />
+            android:key="prefScreenInterface"
+            android:title="@string/user_interface_label"
+            android:icon="?attr/type_video" />
 
     <Preference
             android:key="prefScreenPlayback"

build.gradle

@@ -37,12 +37,12 @@ subprojects {
 }
 
 project.ext {
-    compileSdkVersion = 25
+    compileSdkVersion = 26
     buildToolsVersion = "27.0.3"
     minSdkVersion = 14
     targetSdkVersion = 26
 
-    supportVersion = "25.3.1"
+    supportVersion = "26.1.0"
     commonsioVersion = "2.5"
     commonslangVersion = "3.6"
     commonstextVersion = "1.3"

circle.yml

@@ -12,7 +12,7 @@ dependencies:
     - ~/.android
     - ~/android
   pre:
-    - echo y | android update sdk --no-ui --all --filter "tool,extra-android-m2repository,extra-android-support,extra-google-google_play_services,extra-google-m2repository,android-25"
+    - echo y | android update sdk --no-ui --all --filter "tool,extra-android-m2repository,extra-android-support,extra-google-google_play_services,extra-google-m2repository,android-26"
     - echo y | android update sdk --no-ui --all --filter "build-tools-27.0.3"
   override:
     - echo override dependencies
@@ -20,4 +20,4 @@ dependencies:
 test:
   override:
     - ./gradlew assembleDebug -PdisablePreDex:
-        timeout: 1800
+        timeout: 1800