@Override
 public void refresh() {
   super.refresh();
   if (inviteMessgeDao == null) {
     inviteMessgeDao = new InviteMessgeDao(getActivity());
   }
   if (inviteMessgeDao.getUnreadMessagesCount() > 0) {
     applicationItem.showUnreadMsgView();
   } else {
     applicationItem.hideUnreadMsgView();
   }
 }