Android控件之菜单的创建方式

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); } //用于创建选项菜单的事件方法,在打开界面是会被自动调用 @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);  //参数1(组id)参数2(当前选项的id的id)参数3(项目排序的编号)参数4(项目的标题)  menu.add(0, 100, 1, "设置游戏");  menu.add(0, 200, 2, "开始游戏");  menu.add(0, 300, 3, "退出游戏");  menu.add(0, 400, 4, "开始游戏");  return true; } //当选项菜单被点击时调用的事件方法 @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="删除"/> <item android:title="子菜单">  <menu >   <item android:id="@+id/menu_sub1"    android:title="子菜单1"/>   <item android:id="@+id/menu_sub2"    android:title="子菜单2"/>  </menu> </item></menu>

// 通过配置文件来在Activyt当中填充menu菜单MenuInflater mInflater = getMenuInflater(); mInflater.inflate(R.menu.menu, menu);