Enable per-app language preferences for Android < 13

Author: Isira-Seneviratne

app/src/main/AndroidManifest.xml

@@ -57,6 +57,15 @@
             </intent-filter>
         </receiver>
 
+        <service
+            android:name="androidx.appcompat.app.AppLocalesMetadataHolderService"
+            android:enabled="false"
+            android:exported="false">
+            <meta-data
+                android:name="autoStoreLocales"
+                android:value="true" />
+        </service>
+
         <service
             android:name=".player.PlayerService"
             android:exported="true"

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

@@ -102,7 +102,7 @@ public void onCreate() {
         NewPipe.init(getDownloader(),
             Localization.getPreferredLocalization(this),
             Localization.getPreferredContentCountry(this));
-        Localization.initPrettyTime(Localization.resolvePrettyTime(getApplicationContext()));
+        Localization.initPrettyTime(Localization.resolvePrettyTime());
 
         BridgeStateSaverInitializer.init(this);
         StateSaver.init(this);

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

@@ -20,8 +20,6 @@
 
 package org.schabi.newpipe;
 
-import static org.schabi.newpipe.util.Localization.assureCorrectAppLanguage;
-
 import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
@@ -142,6 +140,7 @@ protected void onCreate(final Bundle savedInstanceState) {
                     + "savedInstanceState = [" + savedInstanceState + "]");
         }
 
+        Localization.migrateAppLanguageSettingIfNecessary(getApplicationContext());
         ThemeHelper.setDayNightMode(this);
         ThemeHelper.setTheme(this, ServiceHelper.getSelectedServiceId(this));
 
@@ -158,7 +157,6 @@ protected void onCreate(final Bundle savedInstanceState) {
             }
         }
 
-        assureCorrectAppLanguage(this);
         super.onCreate(savedInstanceState);
         sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
         sharedPrefEditor = sharedPreferences.edit();
@@ -197,7 +195,6 @@ protected void onCreate(final Bundle savedInstanceState) {
             UpdateSettingsFragment.askForConsentToUpdateChecks(this);
         }
 
-        Localization.migrateAppLanguageSettingIfNecessary(getApplicationContext());
         SettingMigrations.showUserInfoIfPresent(this);
     }
 
@@ -504,9 +501,8 @@ protected void onDestroy() {
 
     @Override
     protected void onResume() {
-        assureCorrectAppLanguage(this);
         // Change the date format to match the selected language on resume
-        Localization.initPrettyTime(Localization.resolvePrettyTime(getApplicationContext()));
+        Localization.initPrettyTime(Localization.resolvePrettyTime());
         super.onResume();
 
         // Close drawer on return, and don't show animation,

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

@@ -84,7 +84,6 @@
 import org.schabi.newpipe.util.Constants;
 import org.schabi.newpipe.util.DeviceUtils;
 import org.schabi.newpipe.util.ExtractorHelper;
-import org.schabi.newpipe.util.Localization;
 import org.schabi.newpipe.util.NavigationHelper;
 import org.schabi.newpipe.util.PermissionHelper;
 import org.schabi.newpipe.util.ThemeHelper;
@@ -132,7 +131,6 @@ protected void onCreate(final Bundle savedInstanceState) {
         ThemeHelper.setDayNightMode(this);
         setTheme(ThemeHelper.isLightThemeSelected(this)
                 ? R.style.RouterActivityThemeLight : R.style.RouterActivityThemeDark);
-        Localization.assureCorrectAppLanguage(this);
 
         // Pass-through touch events to background activities
         // so that our transparent window won't lock UI in the mean time

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

@@ -16,14 +16,12 @@ import org.schabi.newpipe.BuildConfig
 import org.schabi.newpipe.R
 import org.schabi.newpipe.databinding.ActivityAboutBinding
 import org.schabi.newpipe.databinding.FragmentAboutBinding
-import org.schabi.newpipe.util.Localization
 import org.schabi.newpipe.util.ThemeHelper
 import org.schabi.newpipe.util.external_communication.ShareUtils
 
 class AboutActivity : AppCompatActivity() {
 
     override fun onCreate(savedInstanceState: Bundle?) {
-        Localization.assureCorrectAppLanguage(this)
         super.onCreate(savedInstanceState)
         ThemeHelper.setTheme(this)
         title = getString(R.string.title_activity_about)

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

@@ -19,7 +19,6 @@ import org.schabi.newpipe.R
 import org.schabi.newpipe.databinding.FragmentLicensesBinding
 import org.schabi.newpipe.databinding.ItemSoftwareComponentBinding
 import org.schabi.newpipe.ktx.parcelableArrayList
-import org.schabi.newpipe.util.Localization
 import org.schabi.newpipe.util.external_communication.ShareUtils
 
 /**
@@ -100,7 +99,6 @@ class LicenseFragment : Fragment() {
                     val webView = WebView(context)
                     webView.loadData(webViewData, "text/html; charset=UTF-8", "base64")
 
-                    Localization.assureCorrectAppLanguage(context)
                     val builder = AlertDialog.Builder(requireContext())
                         .setTitle(softwareComponent.name)
                         .setView(webView)

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

@@ -20,8 +20,6 @@
 import us.shandian.giga.service.DownloadManagerService;
 import us.shandian.giga.ui.fragment.MissionsFragment;
 
-import static org.schabi.newpipe.util.Localization.assureCorrectAppLanguage;
-
 public class DownloadActivity extends AppCompatActivity {
 
     private static final String MISSIONS_FRAGMENT_TAG = "fragment_tag";
@@ -33,7 +31,6 @@ protected void onCreate(final Bundle savedInstanceState) {
         i.setClass(this, DownloadManagerService.class);
         startService(i);
 
-        assureCorrectAppLanguage(this);
         ThemeHelper.setTheme(this);
 
         super.onCreate(savedInstanceState);

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

@@ -2,7 +2,6 @@
 
 import static org.schabi.newpipe.extractor.stream.DeliveryMethod.PROGRESSIVE_HTTP;
 import static org.schabi.newpipe.util.ListHelper.getStreamsOfSpecifiedDelivery;
-import static org.schabi.newpipe.util.Localization.assureCorrectAppLanguage;
 
 import android.app.Activity;
 import android.content.ComponentName;
@@ -751,7 +750,6 @@ private String getNameEditText() {
     }
 
     private void showFailedDialog(@StringRes final int msg) {
-        assureCorrectAppLanguage(requireContext());
         new AlertDialog.Builder(context)
                 .setTitle(R.string.general_error)
                 .setMessage(msg)

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

@@ -1,7 +1,5 @@
 package org.schabi.newpipe.error;
 
-import static org.schabi.newpipe.util.Localization.assureCorrectAppLanguage;
-
 import android.content.Context;
 import android.content.Intent;
 import android.net.Uri;
@@ -79,7 +77,6 @@ public class ErrorActivity extends AppCompatActivity {
 
     @Override
     protected void onCreate(final Bundle savedInstanceState) {
-        assureCorrectAppLanguage(this);
         super.onCreate(savedInstanceState);
 
         ThemeHelper.setDayNightMode(this);
@@ -306,7 +303,7 @@ private String getContentLanguageString() {
     }
 
     private String getAppLanguage() {
-        return Localization.getAppLocale(getApplicationContext()).toString();
+        return Localization.getAppLocale().toString();
     }
 
     private String getOsString() {

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

@@ -93,7 +93,7 @@ protected void setupMetadata(final LayoutInflater inflater,
 
         if (streamInfo.getLanguageInfo() != null) {
             addMetadataItem(inflater, layout, false, R.string.metadata_language,
-                    streamInfo.getLanguageInfo().getDisplayLanguage(getAppLocale(getContext())));
+                    streamInfo.getLanguageInfo().getDisplayLanguage(getAppLocale()));
         }
 
         addMetadataItem(inflater, layout, true, R.string.metadata_support,