Notification in Android 11 (sdk 30)

[jeanid]

Notification worked great, showed up (sdk 28, android 9). I decided to try the emul emulsion under 11 androids, as a consequence of the notification, the notification would not appear.

private void createNotificationChannel(){
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O){
            NotificationChannel channel1 = new
                    NotificationChannel(CHANNEL_ID_1, "Channel(1)", NotificationManager.IMPORTANCE_HIGH);
            channel1.setDescription("Channel 1 Dec..");
        NotificationChannel channel2 = new
                NotificationChannel(CHANNEL_ID_2, "Channel(2)", NotificationManager.IMPORTANCE_HIGH);
        channel2.setDescription("Channel 2 Dec..");

        NotificationManager notificationManager = getSystemService(NotificationManager.class);
        notificationManager.createNotificationChannel(channel1);
        notificationManager.createNotificationChannel(channel2);
    }
}

void showNotification(int playPauseBtn){
    ...

    Notification notification = new NotificationCompat.Builder(this, CHANNEL_ID_2)
            .setSmallIcon(playPauseBtn)
            .setLargeIcon(thumb)
            .setContentTitle(musicFiles.get(position).getTitle())
            .setContentText(musicFiles.get(position).getArtist())
            .addAction(R.drawable.ic_skip_previous, "Previous", prevPending)
            .addAction(playPauseBtn, "Pause", pausePending)
            .addAction(R.drawable.ic_skip_next, "Next", nextPending)
            .setStyle(new androidx.media.app.NotificationCompat.MediaStyle()
                    .setMediaSession(new MediaSessionCompat(getBaseContext(), TAG).getSessionToken()))
            .setPriority(NotificationCompat.PRIORITY_HIGH)
            .setContentIntent(contentPending)
            .setDeleteIntent(deletePending)
            .setOnlyAlertOnce(true)
            .setVisibility(NotificationCompat.VISIBILITY_PUBLIC)
            .build();
    startForeground(2, notification);
}

[rielyn]

build.grandle SDK didn't you forget to fix it?

compileSdkVersion 31
minSdkVersion 25
targetSdkVersion 31

Android 12 works.

     try {
        notificationManager = (NotificationManager) this.getSystemService(Context.NOTIFICATION_SERVICE);
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            notificationChannel_main = new NotificationChannel("ID", "VestaXR_main", NotificationManager.IMPORTANCE_LOW);
            notificationManager.createNotificationChannel(notificationChannel_main);
            builder_main = new NotificationCompat.Builder(this, notificationChannel_main.getId())
                    .setContentTitle("")
                    .setSound(null)
                    .setSmallIcon(R.drawable.ic_stat_onesignal_default)
                    .setContentText("");
        } else {
            builder_main = new NotificationCompat.Builder(this);
        }
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            startForeground(1, builder_main.build());
        }
    } catch (RuntimeException e) {
    }