@Override

  public View onCreateView(LayoutInflater inflater, ViewGroup container,

               Bundle savedInstanceState) {

    contentView = inflater.inflate(R.layout.fragment_main, container, false);

    setHasOptionsMenu(true); //保证能在Fragment里面调用onCreateOptionsMenu()方法

    initView();

    initData();

    return contentView;

  }

然后就可以在Fragment里面重写onCreateOptionsMenu()方法，将自己想要展示的东西放到menu文件夹中：

@Override

  public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {

    menu.clear();

    inflater.inflate(R.menu.main_menu_item, menu);

  }