Change MaterialYouService to foreground service.

app/src/main/java/ml/docilealligator/infinityforreddit/broadcastreceivers/WallpaperChangeReceiver.java

@@ -4,6 +4,8 @@ import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
 
+import androidx.core.content.ContextCompat;
+
 import ml.docilealligator.infinityforreddit.services.MaterialYouService;
 
 public class WallpaperChangeReceiver extends BroadcastReceiver {
@@ -11,6 +13,6 @@ public class WallpaperChangeReceiver extends BroadcastReceiver {
     @Override
     public void onReceive(Context context, Intent intent) {
         Intent materialYouIntent = new Intent(context, MaterialYouService.class);
-        context.startService(materialYouIntent);
+        ContextCompat.startForegroundService(context, materialYouIntent);
     }
 }

app/src/main/java/ml/docilealligator/infinityforreddit/services/MaterialYouService.java

@@ -1,9 +1,18 @@
 package ml.docilealligator.infinityforreddit.services;
 
-import android.app.IntentService;
+import android.app.Notification;
+import android.app.NotificationChannel;
+import android.app.NotificationManager;
+import android.app.Service;
 import android.content.Intent;
 import android.content.SharedPreferences;
+import android.os.Build;
 import android.os.Handler;
+import android.os.IBinder;
+
+import androidx.annotation.Nullable;
+import androidx.core.app.NotificationCompat;
+import androidx.core.app.NotificationManagerCompat;
 
 import java.util.concurrent.Executor;
 
@@ -11,12 +20,14 @@ import javax.inject.Inject;
 import javax.inject.Named;
 
 import ml.docilealligator.infinityforreddit.Infinity;
+import ml.docilealligator.infinityforreddit.R;
 import ml.docilealligator.infinityforreddit.RedditDataRoomDatabase;
 import ml.docilealligator.infinityforreddit.customtheme.CustomThemeWrapper;
 import ml.docilealligator.infinityforreddit.utils.MaterialYouUtils;
+import ml.docilealligator.infinityforreddit.utils.NotificationUtils;
 import ml.docilealligator.infinityforreddit.utils.SharedPreferencesUtils;
 
-public class MaterialYouService extends IntentService {
+public class MaterialYouService extends Service {
 
     @Inject
     @Named("default")
@@ -38,16 +49,44 @@ public class MaterialYouService extends IntentService {
     Executor executor;
 
     public MaterialYouService() {
-        super("MaterialYouService");
+    }
+
+    @Nullable
+    @Override
+    public IBinder onBind(Intent intent) {
+        return null;
     }
 
     @Override
-    protected void onHandleIntent(Intent intent) {
+    public int onStartCommand(Intent intent, int flags, int startId) {
         ((Infinity) getApplication()).getAppComponent().inject(this);
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+            NotificationChannel serviceChannel = new NotificationChannel(
+                    NotificationUtils.CHANNEL_ID_MATERIAL_YOU,
+                    NotificationUtils.CHANNEL_MATERIAL_YOU,
+                    NotificationManager.IMPORTANCE_LOW
+            );
+
+            NotificationManagerCompat manager = NotificationManagerCompat.from(this);
+            manager.createNotificationChannel(serviceChannel);
+        }
+        Notification notification = new NotificationCompat.Builder(this, NotificationUtils.CHANNEL_ID_MATERIAL_YOU)
+                .setContentTitle(getString(R.string.material_you_notification_title))
+                .setContentText(getString(R.string.please_wait))
+                .setSmallIcon(R.drawable.ic_notification)
+                .setColor(customThemeWrapper.getColorPrimaryLightTheme())
+                .build();
+        startForeground(NotificationUtils.MATERIAL_YOU_NOTIFICATION_ID, notification);
+
         if (mSharedPreferences.getBoolean(SharedPreferencesUtils.ENABLE_MATERIAL_YOU, false)) {
             MaterialYouUtils.changeTheme(this, executor, new Handler(), redditDataRoomDatabase,
                     customThemeWrapper, lightThemeSharedPreferences, darkThemeSharedPreferences,
-                    amoledThemeSharedPreferences);
+                    amoledThemeSharedPreferences, () -> {
-        }
+                        stopForeground(true);
+                        stopSelf();
+                    });
+        }
+
+        return START_NOT_STICKY;
     }
 }

app/src/main/java/ml/docilealligator/infinityforreddit/settings/ThemePreferenceFragment.java

@@ -1,5 +1,10 @@
 package ml.docilealligator.infinityforreddit.settings;
 
+import static androidx.appcompat.app.AppCompatDelegate.MODE_NIGHT_AUTO_BATTERY;
+import static androidx.appcompat.app.AppCompatDelegate.MODE_NIGHT_FOLLOW_SYSTEM;
+import static androidx.appcompat.app.AppCompatDelegate.MODE_NIGHT_NO;
+import static androidx.appcompat.app.AppCompatDelegate.MODE_NIGHT_YES;
+
 import android.content.Context;
 import android.content.Intent;
 import android.content.SharedPreferences;
@@ -38,11 +43,6 @@ import ml.docilealligator.infinityforreddit.utils.CustomThemeSharedPreferencesUt
 import ml.docilealligator.infinityforreddit.utils.MaterialYouUtils;
 import ml.docilealligator.infinityforreddit.utils.SharedPreferencesUtils;
 
-import static androidx.appcompat.app.AppCompatDelegate.MODE_NIGHT_AUTO_BATTERY;
-import static androidx.appcompat.app.AppCompatDelegate.MODE_NIGHT_FOLLOW_SYSTEM;
-import static androidx.appcompat.app.AppCompatDelegate.MODE_NIGHT_NO;
-import static androidx.appcompat.app.AppCompatDelegate.MODE_NIGHT_YES;
-
 /**
  * A simple {@link Fragment} subclass.
  */
@@ -182,7 +182,7 @@ public class ThemePreferenceFragment extends PreferenceFragmentCompat {
                     MaterialYouUtils.changeTheme(activity, executor, new Handler(),
                             redditDataRoomDatabase, customThemeWrapper,
                             lightThemeSharedPreferences, darkThemeSharedPreferences,
-                            amoledThemeSharedPreferences);
+                            amoledThemeSharedPreferences, null);
                     applyMaterialYouPreference.setVisible(true);
                 } else {
                     applyMaterialYouPreference.setVisible(false);
@@ -194,7 +194,7 @@ public class ThemePreferenceFragment extends PreferenceFragmentCompat {
                 MaterialYouUtils.changeTheme(activity, executor, new Handler(),
                         redditDataRoomDatabase, customThemeWrapper,
                         lightThemeSharedPreferences, darkThemeSharedPreferences,
-                        amoledThemeSharedPreferences);
+                        amoledThemeSharedPreferences, null);
                 return true;
             });
         }

app/src/main/java/ml/docilealligator/infinityforreddit/utils/MaterialYouUtils.java

@@ -9,6 +9,7 @@ import android.os.Build;
 import android.os.Handler;
 
 import androidx.annotation.ColorInt;
+import androidx.annotation.Nullable;
 
 import org.greenrobot.eventbus.EventBus;
 
@@ -44,7 +45,8 @@ public class MaterialYouUtils {
                                    CustomThemeWrapper customThemeWrapper,
                                    SharedPreferences lightThemeSharedPreferences,
                                    SharedPreferences darkThemeSharedPreferences,
-                                   SharedPreferences amoledThemeSharedPreferences) {
+                                   SharedPreferences amoledThemeSharedPreferences,
+                                   @Nullable MaterialYouListener materialYouListener) {
         executor.execute(() -> {
             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O_MR1) {
                 WallpaperManager wallpaperManager = WallpaperManager.getInstance(context);
@@ -116,7 +118,12 @@ public class MaterialYouUtils {
                     CustomThemeSharedPreferencesUtils.insertThemeToSharedPreferences(darkTheme, darkThemeSharedPreferences);
                     CustomThemeSharedPreferencesUtils.insertThemeToSharedPreferences(amoledTheme, amoledThemeSharedPreferences);
 
-                    handler.post(() -> EventBus.getDefault().post(new RecreateActivityEvent()));
+                    handler.post(() -> {
+                        if (materialYouListener != null) {
+                            materialYouListener.applied();
+                        }
+                        EventBus.getDefault().post(new RecreateActivityEvent());
+                    });
                 }
             }
         });
@@ -141,4 +148,8 @@ public class MaterialYouUtils {
         double luminance = 1 - (0.299 * Color.red(color) + 0.587 * Color.green(color) + 0.114 * Color.blue(color)) / 255;
         return luminance < 0.5 ? Color.BLACK : Color.WHITE;
     }
+
+    public interface MaterialYouListener {
+        void applied();
+    }
 }

app/src/main/java/ml/docilealligator/infinityforreddit/utils/NotificationUtils.java

@@ -22,11 +22,14 @@ public class NotificationUtils {
     public static final String CHANNEL_DOWNLOAD_IMAGE = "Download Image";
     public static final String CHANNEL_ID_DOWNLOAD_GIF = "download_gif";
     public static final String CHANNEL_DOWNLOAD_GIF = "Download Gif";
+    public static final String CHANNEL_ID_MATERIAL_YOU = "material_you";
+    public static final String CHANNEL_MATERIAL_YOU = "Material You";
     public static final int SUBMIT_POST_SERVICE_NOTIFICATION_ID = 10000;
     public static final int DOWNLOAD_REDDIT_VIDEO_NOTIFICATION_ID = 20000;
     public static final int DOWNLOAD_VIDEO_NOTIFICATION_ID = 30000;
     public static final int DOWNLOAD_IMAGE_NOTIFICATION_ID = 40000;
     public static final int DOWNLOAD_GIF_NOTIFICATION_ID = 50000;
+    public static final int MATERIAL_YOU_NOTIFICATION_ID = 60000;
 
     private static final int SUMMARY_BASE_ID_UNREAD_MESSAGE = 0;
     private static final int NOTIFICATION_BASE_ID_UNREAD_MESSAGE = 1;

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

@@ -1162,4 +1162,6 @@
     <string name="error_loading_wiki">Error loading wiki</string>
     <string name="no_wiki">This subreddit has no wiki page</string>
 
+    <string name="material_you_notification_title">Applying Material You</string>
+
 </resources>