Question

I have the following code to create an ONGOING_EVENT:

Notification notification = new Notification(R.drawable.icon, "someText" , System.currentTimeMillis());
notification.flags |= Notification.FLAG_ONGOING_EVENT;
notification.flags |= Notification.FLAG_FOREGROUND_SERVICE;

PendingIntent contentIntent = PendingIntent.getActivity(this, 0, new Intent(this, Home.class), 0);
notification.setLatestEventInfo(this, "someTitle", "someText", contentIntent);

notificationManager.notify(SOME_ID, notification);

Now, I want to kill it later on:

notificationManager.cancel(SOME_ID);

However, the notification remains. What could be the cause of this?

Answer 1

The problem is notification.flags |= Notification.FLAG_FOREGROUND_SERVICE;. I misinterpreted the documentation for this flag, and subsequently couldn’t remove the notification. The flag usually is set by a service started with startForeground(int id, Notification notification) and prevents the removal of the notification until the service is stopped by stopForeground(boolean removeNotification).

I now use the startForeground/stopForeground methods and the notification is shown/hidden perfectly fine.