title: Cannot get the NotificationListenerService class to work
body: <p>I have a android application that is trying to use the new NotificationListenerService class from api 18. I have created my own service class that inherits from this class and overrode the onNotificationPosted and onNotificationRemoved events and although my service seems to start just fine these 2 events never seem to be called when I get or remove a notification.</p>
  
  <p>Has anyone had any success with this class or possibly any source code they are will to share demonstrating exactly how to use this class?</p>