@Override
  public boolean onMenuItemSelected(int featureId, MenuItem item) {

    switch (item.getItemId()) {
      case ADD_NEW_FRIEND_ID:
        {
          Intent i = new Intent(FriendList.this, SearchFriend.class);
          startActivity(i);
          return true;
        }
      case EXIT_APP_ID:
        {
          imService.exit();
          finish();
          return true;
        }
    }

    return super.onMenuItemSelected(featureId, item);
  }