菜单弹出辅助离不开锚使用 [英] Menu popup helper cannot be used without anchor

问题描述

我想用弹出来的动作栏菜单项。这一切就OK了，当我用这个在活动，但是当我切换到片段，我得到：

I want to use popup to a menu item in action bar. It's everything ok when I use this in the Activity but when I switch to fragment I get:

MenuPopupHelper cannot be used without an anchor

我的片段：

@Override
public boolean onOptionsItemSelected(MenuItem item) {

    switch(item.getItemId()) {
        case R.id.action_filter:
            createCategoriesPopupMenu(item);
            return true;
        case R.id.action_sort:
            createSortPopupMenu(item);
            return true;
        default:
            return super.onOptionsItemSelected(item);
    }
}


private void createSortPopupMenu(MenuItem item)
{
    PopupMenu popup;

    final View menuItemView = getView().findViewById(item.getItemId());

    Log.wtf("d","item getitemid"+item.getItemId());

    if (menuItemView == null)
    {
        Log.wtf("d","menuItemView==null view"+view.findViewById(item.getItemId()));
        Log.wtf("d","menuItemView==null getAc"+getActivity().findViewById(item.getItemId()));

        //final View searchItemView = getView().findViewById(R.id.action_search);
        //popup = new PopupMenu(getActivity(), searchItemView);
    }

        popup = new PopupMenu(getActivity(), menuItemView);

    Menu menu = popup.getMenu();

    addSortMenuItems(menu);

    popup.setOnMenuItemClickListener(new OnMenuItemClickListener()
    {
        @Override
        public boolean onMenuItemClick(MenuItem item)
        {
            onSortMenuItemClick(item);
            return true;
        }
    });

    popup.show();
}   
@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
    inflater.inflate(R.menu.issues_list_menu, menu);

    super.onCreateOptionsMenu(menu, inflater);
}

控制台输出（断言）：

console output(assert):

07-08 14：08：16.659：A / D（1677）：项目getitemid2131165600 07-08

07-08 14:08:16.659: A/d(1677): item getitemid2131165600 07-08

14：08：16.659：A / D（1677）：menuItemView == NULL viewnull 07-08

14:08:16.659: A/d(1677): menuItemView==null viewnull 07-08

14：08：16.663：A / D（1677）：menuItemView == NULL getAcnull

14:08:16.663: A/d(1677): menuItemView==null getAcnull

余did't忘记setHasOptionsMenu（真正的）;在onCreateView（） 和视图是 onCreateView充气布局（）

I did't forgot setHasOptionsMenu(true); in onCreateView() and view is inflated layout from onCreateView()

推荐答案

好吧，我找到解决方案，XML菜单文件项，我们要添加弹出，我们需要设置

Ok i found solution in xml menu file in item which we want to add popup we need to set

android:showAsAction="always"

becouse弹出仅适用于在没有菜单操作栏中的图标。还可以使用getActivity（）。findView ...不是getView（）。findView ...

becouse popup works only on icons in action bar not in menu. Also use getActivity().findView... not getView().findView...

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