片段中的上下文操作条

Question

有人有教程来实现使用支持库v7(appcomat_v7)的片段中的CAB吗？

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:idk="http://schemas.android.com/apk/res-auto" >

    <item
        android:id="@+id/menu_delete"
        android:icon="@android:drawable/ic_menu_delete"
        android:orderInCategory="100"
        idk:showAsAction="ifRoom|withText"
        android:title="Delete"/>

</menu>

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

    // Called when the user selects a contextual menu item
        @Override
        public boolean onActionItemClicked(ActionMode mode, MenuItem item) 
        {
            // TODO Auto-generated method stub
            switch(item.getItemId())
            {
            case R.id.menu_delete:
                return true;

            }

            return false;
        }


        //// Called when the action mode is created; startActionMode() was called
        @Override
        public boolean onCreateActionMode(ActionMode mode, Menu menu)
        {
            // TODO Auto-generated method stub
            mode.getMenuInflater().inflate(R.menu.delete_only, menu);
            return true;
        }

         // Called when the user exits the action mode
        @Override
        public void onDestroyActionMode(ActionMode mode) 
        {
            // TODO Auto-generated method stub
            mActionMode = null;
        }

        //// 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)
        {
            // TODO Auto-generated method stub
            return false;
        }
};

@Override
    public void onItemClick(AdapterView<?> adapterView, View view, int position, long id) 
    {
        // TODO Auto-generated method stub
        if(listItemSelections.contains(1) && mActionMode == null)
        {
            mActionMode = getActivity().startActionMode(mActionModeCallback);
        }

    }

mActionMode = getActivity().startActionMode(mActionModeCallback);

The method startActionMode(ActionMode.Callback) in the type Activity is not applicable for the arguments (ActionMode.Callback)

我不知道该怎么做，我找不到一个教程来解释一个片段中的实现和使用支持库。

谢谢你的阅读。

Answer 1

如果您正在使用操作栏库，那么请使用此。

 ActionBarActivity activity=(ActionBarActivity)getActiivty();
 activity.startSupportActionMode(mActionModeCallback);

如果它是简单的活动，那么更喜欢这个

 getActivity().startActionMode(mActionModeCallback);