@Override

    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {

        return inflater.inflate(R.layout.fragment_dynamic, container, false);

    }

    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        init();

    }

　　private void init() {

        placeAddFriend = (TextView) getActivity().findViewById(R.id.placeAddFriend);

    }