android 为组件添加contextMenu上下文菜单

package com.example.fragmentNavigation2.fragment;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.*;
import android.widget.Button;
import android.widget.Toast;
import com.example.fragmentNavigation2.R;

public class WeiXinFragment extends Fragment {

    private Button button;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.wei_xin_fragment, container, false);
        button = (Button) view.findViewById(R.id.press_button);
        registerForContextMenu(button);
        return view;
    }

    @Override
    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {
        new MenuInflater(getActivity()).inflate(R.menu.context_menu, menu);
        menu.setHeaderTitle("请选择你喜欢的网站");
        super.onCreateContextMenu(menu, v, menuInfo);
    }

    /**
     * 相应本fragment对应的上下文菜单事件
     */
    @Override
    public boolean onContextItemSelected(MenuItem item) {
        switch (item.getItemId()) {
            case R.id.first_item:
                Toast.makeText(getActivity(), "重庆国际矿产开发协会", 1).show();
                break;
            case R.id.second_item:
                Toast.makeText(getActivity(), "重庆雨人网络工作室", 1).show();
                break;
        }
        return true;
    }
}

<?xml version="1.0" encoding="utf-8"?>

<menu xmlns:android="http://schemas.android.com/apk/res/android">
        <item android:id="@+id/first_item" android:title="第一个选项"></item>
        <item android:id="@+id/second_item" android:title="第二个选项"></item>
        <item android:title="第三个选项"></item>
</menu>