1. Called from HomeActivity

   This is the part where the service function is called from the main activity. It is called differently depending on the version.

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   <code>Intent serviceIntent = new Intent(HomeActivity.this, MyService.class);

   if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {

   startForegroundService(serviceIntent);

   } else {

   startService(serviceIntent);

   }

   </code>

   <code>Intent serviceIntent = new Intent(HomeActivity.this, MyService.class); if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) { startForegroundService(serviceIntent); } else { startService(serviceIntent); } </code>

   Intent serviceIntent = new Intent(HomeActivity.this, MyService.class);
   if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
       startForegroundService(serviceIntent);
   } else {
       startService(serviceIntent);
   }
   

2. MyService Class

   The NotificationManager.IMPORTANCE_HIGH is specified. The setLockscreenVisibility(Notification.VISIBILITY_PUBLIC) is set.

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   <code>public class MyService extends Service {

   private static final String CHANNEL_ID = "TTS_NOTI";

   private static final int NOTIFICATION_ID = 999;

   @Override

   public IBinder onBind(Intent intent) {

   return null;

   }

   @Override

   public int onStartCommand(Intent intent, int flags, int startId) {

   createNotificationChannel();

   showTTSNotification(); // Create notification

   return START_STICKY;

   }

   private void createNotificationChannel() {

   if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {

   NotificationChannel channel = new NotificationChannel(

   CHANNEL_ID,

   "TTS Notifications",

   NotificationManager.IMPORTANCE_HIGH

   );

   channel.setDescription("Notifications for TTS control");

   channel.setLockscreenVisibility(Notification.VISIBILITY_PUBLIC);

   NotificationManager manager = getSystemService(NotificationManager.class);

   manager.createNotificationChannel(channel);

   }

   }

   private void showTTSNotification() {

   // MediaSession setup

   MediaSessionCompat mediaSession = new MediaSessionCompat(this, "TTS_MediaSession");

   mediaSession.setActive(true);

   // Set large icon

   Bitmap largeIcon = BitmapFactory.decodeResource(getResources(), R.drawable.icon);

   // Create intent to bring the app to the foreground

   Intent notificationIntent = new Intent(this, HomeActivity.class);

   PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, notificationIntent, PendingIntent.FLAG_UPDATE_CURRENT | PendingIntent.FLAG_IMMUTABLE);

   // Create NotificationCompat.Builder

   NotificationCompat.Builder builder = new NotificationCompat.Builder(this, CHANNEL_ID)

   .setSmallIcon(R.drawable.icon)

   .setLargeIcon(largeIcon)

   .setContentTitle("Song Title")

   .setContentText("Artist Name")

   .setContentIntent(pendingIntent)

   .setPriority(NotificationCompat.PRIORITY_MAX)

   .setOngoing(true)

   .setCategory(NotificationCompat.CATEGORY_SERVICE)

   .setVisibility(NotificationCompat.VISIBILITY_PUBLIC)

   .setStyle(new MediaStyle().setMediaSession(mediaSession.getSessionToken())

   .setShowActionsInCompactView(0, 1, 2))

   .addAction(new NotificationCompat.Action(R.drawable.play_prev, "Previous", getPendingIntent("PREVIOUS")))

   .addAction(new NotificationCompat.Action(R.drawable.play, "Play", getPendingIntent("PLAY_PAUSE")))

   .addAction(new NotificationCompat.Action(R.drawable.play_next, "Next", getPendingIntent("NEXT")));

   // Run the service in the foreground

   startForeground(NOTIFICATION_ID, builder.build());

   }

   private PendingIntent getPendingIntent(String action) {

   Intent intent = new Intent(this, NotificationReceiver.class);

   intent.setAction(action);

   return PendingIntent.getBroadcast(this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT | PendingIntent.FLAG_IMMUTABLE);

   }

   @Override

   public void onDestroy() {

   super.onDestroy();

   Log.e("MyService", "Service destroyed");

   }

   }

   </code>

   <code>public class MyService extends Service { private static final String CHANNEL_ID = "TTS_NOTI"; private static final int NOTIFICATION_ID = 999; @Override public IBinder onBind(Intent intent) { return null; } @Override public int onStartCommand(Intent intent, int flags, int startId) { createNotificationChannel(); showTTSNotification(); // Create notification return START_STICKY; } private void createNotificationChannel() { if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) { NotificationChannel channel = new NotificationChannel( CHANNEL_ID, "TTS Notifications", NotificationManager.IMPORTANCE_HIGH ); channel.setDescription("Notifications for TTS control"); channel.setLockscreenVisibility(Notification.VISIBILITY_PUBLIC); NotificationManager manager = getSystemService(NotificationManager.class); manager.createNotificationChannel(channel); } } private void showTTSNotification() { // MediaSession setup MediaSessionCompat mediaSession = new MediaSessionCompat(this, "TTS_MediaSession"); mediaSession.setActive(true); // Set large icon Bitmap largeIcon = BitmapFactory.decodeResource(getResources(), R.drawable.icon); // Create intent to bring the app to the foreground Intent notificationIntent = new Intent(this, HomeActivity.class); PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, notificationIntent, PendingIntent.FLAG_UPDATE_CURRENT | PendingIntent.FLAG_IMMUTABLE); // Create NotificationCompat.Builder NotificationCompat.Builder builder = new NotificationCompat.Builder(this, CHANNEL_ID) .setSmallIcon(R.drawable.icon) .setLargeIcon(largeIcon) .setContentTitle("Song Title") .setContentText("Artist Name") .setContentIntent(pendingIntent) .setPriority(NotificationCompat.PRIORITY_MAX) .setOngoing(true) .setCategory(NotificationCompat.CATEGORY_SERVICE) .setVisibility(NotificationCompat.VISIBILITY_PUBLIC) .setStyle(new MediaStyle().setMediaSession(mediaSession.getSessionToken()) .setShowActionsInCompactView(0, 1, 2)) .addAction(new NotificationCompat.Action(R.drawable.play_prev, "Previous", getPendingIntent("PREVIOUS"))) .addAction(new NotificationCompat.Action(R.drawable.play, "Play", getPendingIntent("PLAY_PAUSE"))) .addAction(new NotificationCompat.Action(R.drawable.play_next, "Next", getPendingIntent("NEXT"))); // Run the service in the foreground startForeground(NOTIFICATION_ID, builder.build()); } private PendingIntent getPendingIntent(String action) { Intent intent = new Intent(this, NotificationReceiver.class); intent.setAction(action); return PendingIntent.getBroadcast(this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT | PendingIntent.FLAG_IMMUTABLE); } @Override public void onDestroy() { super.onDestroy(); Log.e("MyService", "Service destroyed"); } } </code>

   public class MyService extends Service {
       private static final String CHANNEL_ID = "TTS_NOTI";
       private static final int NOTIFICATION_ID = 999;
   
       @Override
       public IBinder onBind(Intent intent) {
           return null;
       }
   
       @Override
       public int onStartCommand(Intent intent, int flags, int startId) {
           createNotificationChannel();
           showTTSNotification();  // Create notification
           return START_STICKY;
       }
   
       private void createNotificationChannel() {
           if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
               NotificationChannel channel = new NotificationChannel(
                       CHANNEL_ID,
                       "TTS Notifications",
                       NotificationManager.IMPORTANCE_HIGH
               );
               channel.setDescription("Notifications for TTS control");
               channel.setLockscreenVisibility(Notification.VISIBILITY_PUBLIC);
               NotificationManager manager = getSystemService(NotificationManager.class);
               manager.createNotificationChannel(channel);
           }
       }
   
       private void showTTSNotification() {
           // MediaSession setup
           MediaSessionCompat mediaSession = new MediaSessionCompat(this, "TTS_MediaSession");
           mediaSession.setActive(true);
   
           // Set large icon
           Bitmap largeIcon = BitmapFactory.decodeResource(getResources(), R.drawable.icon);
   
           // Create intent to bring the app to the foreground
           Intent notificationIntent = new Intent(this, HomeActivity.class);
           PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, notificationIntent, PendingIntent.FLAG_UPDATE_CURRENT | PendingIntent.FLAG_IMMUTABLE);
   
           // Create NotificationCompat.Builder
           NotificationCompat.Builder builder = new NotificationCompat.Builder(this, CHANNEL_ID)
                   .setSmallIcon(R.drawable.icon)
                   .setLargeIcon(largeIcon)
                   .setContentTitle("Song Title")
                   .setContentText("Artist Name")
                   .setContentIntent(pendingIntent)
                   .setPriority(NotificationCompat.PRIORITY_MAX)
                   .setOngoing(true)
                   .setCategory(NotificationCompat.CATEGORY_SERVICE)
                   .setVisibility(NotificationCompat.VISIBILITY_PUBLIC)
                   .setStyle(new MediaStyle().setMediaSession(mediaSession.getSessionToken())
                           .setShowActionsInCompactView(0, 1, 2))
                   .addAction(new NotificationCompat.Action(R.drawable.play_prev, "Previous", getPendingIntent("PREVIOUS")))
                   .addAction(new NotificationCompat.Action(R.drawable.play, "Play", getPendingIntent("PLAY_PAUSE")))
                   .addAction(new NotificationCompat.Action(R.drawable.play_next, "Next", getPendingIntent("NEXT")));
   
           // Run the service in the foreground
           startForeground(NOTIFICATION_ID, builder.build());
       }
   
       private PendingIntent getPendingIntent(String action) {
           Intent intent = new Intent(this, NotificationReceiver.class);
           intent.setAction(action);
           return PendingIntent.getBroadcast(this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT | PendingIntent.FLAG_IMMUTABLE);
       }
   
       @Override
       public void onDestroy() {
           super.onDestroy();
           Log.e("MyService", "Service destroyed");
       }
   }
   

3. Parts written in AndroiManifest.xml

   And I have added the necessary permissions in the AndroidManifest.

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   <code><uses-permission android:name="android.permission.ACCESS_NOTIFICATION_POLICY" />

   <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />

   <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

   <uses-permission android:name="android.permission.FOREGROUND_SERVICE_MEDIA_PLAYBACK" />

   <serviceandroid:name=".etc.MyService"

   android:foregroundServiceType="mediaPlayback"

   android:permission="android.permission.FOREGROUND_SERVICE"/>

   <receiver android:name=".etc.NotificationReceiver"/>

   </code>

   <code><uses-permission android:name="android.permission.ACCESS_NOTIFICATION_POLICY" /> <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" /> <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> <uses-permission android:name="android.permission.FOREGROUND_SERVICE_MEDIA_PLAYBACK" /> <serviceandroid:name=".etc.MyService" android:foregroundServiceType="mediaPlayback" android:permission="android.permission.FOREGROUND_SERVICE"/> <receiver android:name=".etc.NotificationReceiver"/> </code>

   <uses-permission android:name="android.permission.ACCESS_NOTIFICATION_POLICY" />
   <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
   <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
   <uses-permission android:name="android.permission.FOREGROUND_SERVICE_MEDIA_PLAYBACK" />
   
   
   <serviceandroid:name=".etc.MyService"
   android:foregroundServiceType="mediaPlayback"
   android:permission="android.permission.FOREGROUND_SERVICE"/>
   <receiver android:name=".etc.NotificationReceiver"/>
   

I have searched extensively on Google but have not found a solution. I would greatly appreciate any links or information that you could provide.