上下文操作菜单不会在视觉上超过片段中的操作栏位置

Question

我有一个 Activity 和一个 Fragment 包含一个 ListView 的项目，用户可以点击并调用上下文操作模式。

我希望发生的事情正如 documentation 所说：

The contextual action bar is not necessarily associated with the action bar. They operate independently, even though the contextual action bar visually overtakes the action bar position.

但是，这是我目前遇到的行为。截至目前，上下文操作模式出现在上方ActionBar，如下图所示。

到目前为止我尝试过但没有成功的方法：

将 ActionMode 逻辑从 Fragment 移动到主机 Activity。
在我的主题中设置<item name="windowActionModeOverlay">true</item>。
调用 getActivity().getMenuInflater() 而不是 mode.getMenuInflater()。

这是我调用上下文操作菜单的代码

public class NotesFragment extends Fragment implements View.OnClickListener{

    private ActionMode mActionMode;

    @Override
    public void checkBoxChecked(Note which) {
        if (mActionMode == null)
            mActionMode = getActivity().startActionMode(mActionModeCallback);
    }

    private ActionMode.Callback mActionModeCallback = new ActionMode.Callback() {

        // Called when the action mode is created; startActionMode() was called
        @Override
        public boolean onCreateActionMode(ActionMode mode, Menu menu) {
            // Inflate a menu resource providing context menu items
            MenuInflater inflater = mode.getMenuInflater();
            inflater.inflate(R.menu.context, menu);
            return true;
        }

        // Called each time the action mode is shown. 
        // Always called after onCreateActionMode, but
        // may be called multiple times if the mode is invalidated.
        @Override
        public boolean onPrepareActionMode(ActionMode mode, Menu menu) {

            return false; // Return false if nothing is done
        }

        // Called when the user selects a contextual menu item
        @Override
        public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
            switch (item.getItemId()) {
                case R.id.context_delete:
                    //Do work unrelated to topic
                    mode.finish(); // Action picked, so close the CAB
                    return true;
                case R.id.context_move:
                    //Do work unrelated to topic
                    mode.finish(); // Action picked, so close the CAB
                    return true;
                default:
                    return false;
            }
        }

        // Called when the user exits the action mode
        @Override
        public void onDestroyActionMode(ActionMode mode) {
            mActionMode = null;
        }
    };

}

编辑：这是 Activity，其中 Fragment 所在：

public class MainActivity extends ActionBarActivity implements DialogFragmentMoveNote.DialogFragmentMoveNoteListener,
        DialogFragmentRemoveNote.DialogFragmentRemoveNoteListener, DialogFragmentAddNewFolder.DialogFragmentAddNewFolderListener,
        DialogFragmentDeleteFolder.DialogFragmentDeleteFolderListener {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }

    @Override
    public void onAddNewFolderPositiveClick(Folder folder) {
        //Tell the fragment to do work
    }

    @Override
    public void onRemoveNotesPositiveClick() {
        //Tell the fragment to do work
    }

    @Override
    public void onMoveNotePositiveClick(String chosenFolder) {
        //Tell the fragment to do work
    }

    @Override
    public void onDeleteFolderPositiveClick() {
        //Tell the fragment to do work
    }

    private void displayNoteDetailsFromWidget(String noteId){
        //Tell the fragment to do work
    }
}

为什么上下文操作菜单没有像文档状态那样在视觉上超过 ActionBar？

Answer 1

解决这个问题的方法是添加

<item name="android:windowActionModeOverlay">true</item>

我的Theme，现在看起来像

<!-- Base application theme. -->
<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
    <!-- Customize your theme here. -->
    <item name="android:windowActionModeOverlay">true</item>
</style>

看了this answer

后找到了解决方法

上下文操作菜单不会在视觉上超过片段中的操作栏位置

Contextual Action Menu not visually overtaking the Action Bar position in a Fragment

android

android-fragments