I have googled this non stop today and could not find anything. My scenario is the following:
I have an Android app that auto replies to incoming messages. I have
As far as i can tell you are creating a new NotificationManager object to create the notification and a different notificationManager object to cancel the notifications. You should be using the same object. The way you are doing it, you are not firing any notification with the object in the notifDestroy(), hence probably it doesnt clear the notification for you.