code: @Override
  	public void onRegistered(Context context, String registrationId)  {
  		try {
  			if(notificationCallback != null) {
  				notificationCallback.onRegister(context, registrationId);
  			}
  			else {
  				logWarn("No notificationCallback found in GCM receiver.  Initialization may have failed.");
  			}	
  		} 
  		catch (Exception e) {
  			logError("GCM registration failed", e);
  		}
  	}
docs: /* (non-Javadoc)
  @see com.socialize.notifications.C2DMReceiverHandler#onRegistrered(android.content.Context, java.lang.String)