android 子菜单 通过配置文件生成

在res下新建menu/ editmenu.xml

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

<menu

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

<item

android:id="@+id/item04"

android:title="撤销"/>

<item

android:id="@+id/item05"

android:title="恢复"/>

</menu>

在res下新建menu/ filemenu.xml

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

<menu

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

<item

android:id="@+id/item01"

android:title="新建" />

<item

android:id="@+id/item02"

android:title="打开" />

<item

android:id="@+id/item03"

android:title="保存" />

</menu>

在MyMenuDemo.java程序中

package com.li.menu;

import android.app.Activity;

import android.os.Bundle;

import android.view.ContextMenu;

import android.view.ContextMenu.ContextMenuInfo;

import android.view.Menu;

import android.view.MenuItem;

import android.view.SubMenu;

import android.view.View;

import android.widget.ArrayAdapter;

import android.widget.ListView;

import android.widget.Toast;

public class MyMenuDemo extends Activity {

private String data[] = new String[]{

"河池学院","http://blog.sina.com.cn/u/2853310902",

"数学系：李叶文","中国高校","helloliyewen@163.com"}; //定义ListView的显示项

private ListView listView = null;

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

this.listView = new ListView(this);

this.listView.setAdapter(new ArrayAdapter<String>(this,

android.R.layout.simple_expandable_list_item_1,

this.data));

super.setContentView(this.listView);

super.registerForContextMenu(this.listView);

}

@Override

public boolean onCreateOptionsMenu(Menu menu) {

SubMenu fileMenu = menu.addSubMenu("文件");

SubMenu edMenu = menu.addSubMenu("编辑");

super.getMenuInflater().inflate(R.menu.filemenu,fileMenu);

super.getMenuInflater().inflate(R.menu.editmenu, edMenu);

return true;

}

@Override

public boolean onOptionsItemSelected(MenuItem item) {

switch(item.getItemId()){ //判断操作的菜单ID

case Menu.FIRST + 1:

Toast.makeText(this,"您选择的是“新建”项",Toast.LENGTH_LONG).show();

break;

case Menu.FIRST + 2:

Toast.makeText(this,"您选择的是“打开”项",Toast.LENGTH_LONG).show();

break;

case Menu.FIRST + 3:

Toast.makeText(this,"您选择的是“保存”项",Toast.LENGTH_LONG).show();

break;

}

return false;

}

}