How to remove all notifications when an android app (activity or service) is killed?

Question

I have an app with an activity and an intent service running in the background.

There\'s also a notification which shows a progress bar with the progress of the backg

Answer 1

Did you tried onStop ? It worked for me. I called cancelAll() in onStop. It closes all notification on removal of app from task Manager.

Note : But it also remove all notification when your app goes in background. In that case you can re invoke those notification using background process.

@Override public void onStop (){
    super.onStop();
    cancelAllNotification(getApplicationContext());
}

public static void cancelAllNotification(Context ctx) {
    String ns = Context.NOTIFICATION_SERVICE;
    NotificationManager nMgr = (NotificationManager) ctx.getSystemService(ns);
    nMgr.cancelAll();
}