Creating static handlers on Android

StaticHandler

CustomHandler customHandler = new CustomHandler(this);
customHandler.sendEmptyMessage(0);

static class CustomHandler extends Handler{
		private  final WeakReference<FriendListFragment> fragmentHolder;
		
		public CustomHandler(FriendListFragment friendListFragment){
			fragmentHolder = new WeakReference<FriendListFragment>(friendListFragment);
		}
		
		
		@Override
		public void handleMessage(android.os.Message msg) {
			final FriendListFragment friendListFragment = fragmentHolder.get();
			switch (msg.what) {
			case 0:
				Toast.makeText(friendListFragment.context,
						"Sorry no groups/friends has been added",
						Toast.LENGTH_SHORT).show();
				if (friendListFragment.mFriendListAdapter != null) {
					friendListFragment.mFriendListAdapter.friendList.clear();
					friendListFragment.mFriendListAdapter.notifyDataSetChanged();
					friendListFragment.fragmentCommunicator.toggleVisibility(View.GONE);
				}

				break;
			default:
				break;
			}
			friendListFragment.showDialog(null);
			friendListFragment.resetThreadCancelBoolean();

		}
	}