package com.example.androidthismenus;
import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
public class MainActivity extends Activity {
 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);
 }
 //用于創(chuàng)建選項(xiàng)菜單的事件方法,在打開界面是會(huì)被自動(dòng)調(diào)用
 @Override
 public boolean onCreateOptionsMenu(Menu menu) {
  // Inflate the menu; this adds items to the action bar if it is present.
  //getMenuInflater().inflate(R.menu.main, menu);
  //參數(shù)1(組id)參數(shù)2(當(dāng)前選項(xiàng)的id的id)參數(shù)3(項(xiàng)目排序的編號(hào))參數(shù)4(項(xiàng)目的標(biāo)題)
  menu.add(0, 100, 1, "設(shè)置游戲");
  menu.add(0, 200, 2, "開始游戲");
  menu.add(0, 300, 3, "退出游戲");
  menu.add(0, 400, 4, "開始游戲");
  return true;
 }
 //當(dāng)選項(xiàng)菜單被點(diǎn)擊時(shí)調(diào)用的事件方法
 @Override
 public boolean onOptionsItemSelected(MenuItem item) {
  // Handle action bar item clicks here. The action bar will
  // automatically handle clicks on the Home/Up button, so long
  // as you specify a parent activity in AndroidManifest.xml.
  int id = item.getItemId();
  if (id == R.id.action_settings) {
   return true;
  }
  return super.onOptionsItemSelected(item);
 }
}

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android" >
 <item
  android:id="@+id/menu_new"
  android:icon="@android:drawable/ic_menu_help"
  android:title="新建"/>
 <item
  android:id="@+id/menu_delete"
  android:icon="@android:drawable/ic_menu_delete"
  android:title="刪除"/>
 <item android:title="子菜單">
  <menu >
   <item android:id="@+id/menu_sub1"
    android:title="子菜單1"/>
   <item android:id="@+id/menu_sub2"
    android:title="子菜單2"/>
  </menu>
 </item>
</menu>

// 通過配置文件來在Activyt當(dāng)中填充menu菜單
MenuInflater mInflater = getMenuInflater(); mInflater.inflate(R.menu.menu, menu);