title: resuming an activity from a notification
body: <p>I have a notification in the status bar for my app:</p>
  
  <pre><code>    Notification notification = new Notification(R.drawable.icon, null, System.currentTimeMillis());
  
      Intent notificationIntent = new Intent(this.parent, MainActivity.class);
      PendingIntent contentIntent = PendingIntent.getActivity(this.parent, 0, notificationIntent, 0);
  
      ...
  
      notification.flags = Notification.FLAG_ONGOING_EVENT;        
      mNotificationManager.notify(NOTIFICATION_ID, notification);
  </code></pre>
  
  <p>The problem with this is that when you press the home button from the app (pushing it to the background) then press on the notification in the list accessed from the status bar, it starts a fresh copy of the activity. All I want to do is resume the app (like when you longpress the home button and press on the app's icon). Is there a way of creating an Intent to do this?</p>