我想在操作栏中使用弹出菜单项。当我在Activity中使用它时,一切都很好但是当我切换到片段时,我得到:
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):
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
14:08:16.663:A / d(1677):menuItemView == null getAcnull
我没有忘记setHasOptionsMenu(true);在onCreateView()中
并且view
是来自onCreateView()
答案 0 :(得分:13)
好的,我在项目中的xml菜单文件中找到了解决方案,我们要添加需要设置的弹出窗口
android:showAsAction="always"
因为弹出窗口仅适用于操作栏中的图标而非菜单中的图标。还可以使用getActivity()。findView ...而不是getView()。findView ...
答案 1 :(得分:0)
您可以更改
final View menuItemView = getView().findViewById(item.getItemId());
到
final View menuItemView = getActivity().findViewById(item.getItemId());