title: Removing a notification from notification center on click
body: <p>Is it possible to remove the push notification from the notification center when one is clicked and the app launches?</p>
  
  <p>Most apps seem to leave the notification in place. I read on another question that this:</p>
  
  <pre><code>[[UIApplication sharedApplication] setApplicationIconBadgeNumber:0]; 
  </code></pre>
  
  <p>may work however it doesn't work for me.</p>
  
  <p>The Facebook app definitely seems to remove the push notifications once clicked on.</p>