工具栏项目上的复杂菜单

Question

如何使用 ListPopupWindow 实现这样的功能？

我试图在 onOptionsItemSelected 上获取 Item View 实例，因此在 onCreateOptionsMenu 中它返回 null（如您所见，请参阅注释行）：

@Override
    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
        super.onCreateOptionsMenu(menu, inflater);
        inflater.inflate(R.menu.menu_socials, menu);    //        The line bellow was returning null
//        ImageButton view = (ImageButton) menu.findItem(R.id.fake_overflow).getActionView();
        listPopupWindow = new ListPopupWindow(
                getContext());
        listPopupWindow.setAdapter(new ArrayAdapter(
                getContext(),
                android.R.layout.simple_expandable_list_item_1, products));
        listPopupWindow.setWidth(300);
        listPopupWindow.setHeight(400);
        listPopupWindow.setModal(true);    
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        View view = getActivity().findViewById(R.id.fake_overflow);
//        listPopupWindow.show();
        listPopupWindow.setAnchorView(view);
        listPopupWindow.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                Log.i("TAG","action click?");
                listPopupWindow.dismiss();
            }
        });
        return super.onOptionsItemSelected(item);
    }

Answer 1

我会使用 ListPopupWindow，支持库中也提供了它。顾名思义，PopupWindow 包裹在一个 List(View) 周围，它接受一个适配器。使用自定义适配器，您应该能够轻松自定义每一行的外观。溢出视图将成为您 ListPopupWindow

的锚点视图

工具栏项目上的复杂菜单

Complex menu on Toolbar item

java

android

toolbar

android-appcompat