Menu菜单之PopMenu

PopupMenu
    PopupMenu(Context context, View anchor): 第二个参数是指弹出菜单显示的哪一个控件的下方或上方
    MenuInflater.inflate(int menuResId,PopupMenu.getMenu()) 加载菜单资源到弹出菜单对象中
    setOnMenuItemClickListener() 设置弹出菜单项的点击事件
    show() 弹出菜单

    dismiss() 关闭菜单

package com.qianfengpopmenu;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.PopupMenu;
import android.widget.PopupMenu.OnMenuItemClickListener;
import android.widget.Toast;

public class MainActivity extends Activity implements OnMenuItemClickListener{

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
	}
	//点点击按钮时弹出弹出菜单
    public void showPop(View view){
    	//创建弹出菜单对象
    	PopupMenu popupMenu=new PopupMenu(MainActivity.this, view);
    	//将指定的菜单布局进行加载
    	getMenuInflater().inflate(R.menu.main, popupMenu.getMenu());
    	popupMenu.setOnMenuItemClickListener(this);//给菜单绑定监听
    	//展示菜单
    	popupMenu.show();
    }
    //当popupmenu中某一项被点击时回调该方法
	@Override
	public boolean onMenuItemClick(MenuItem item) {
		switch (item.getItemId()) {
		case R.id.action_about:
			Toast.makeText(MainActivity.this, item.getTitle(), Toast.LENGTH_SHORT).show();
			break;

		default:
			break;
		}
		return false;
	}
}

菜单Xml:

<menu xmlns:android="http://schemas.android.com/apk/res/android" >

    <item
        android:id="@+id/action_settings"
        android:orderInCategory="100"
        android:showAsAction="never"
        android:title="@string/action_settings"/>
    <item
        android:id="@+id/action_about"
        android:orderInCategory="100"
        android:showAsAction="never"
        android:title="关于"/>

</menu>