title: How to clear a notification if activity crashes?
body: <p>In my app, I'm creating a notification with the FLAG_ONGOING_EVENT flag set as such..</p>
  
  <pre><code>Notification notification = new Notification(iconId, text, System.currentTimeMillis());  
  notification.flags |= Notification.FLAG_ONGOING_EVENT;
  </code></pre>
  
  <p>I'm cancelling the notification in onDestroy, but if my app crashes before calling onDestroy, is there any way to have my notification go away?</p>
  
  <p>Rob W.</p>