概述

关于选项菜单，请参考阅读《Android 从入门到精通》（27）——选项菜单，不再赘述

程序示例

完整工程：http://download.csdn.net/detail/sweetloveft/9439976

1.MainActivity.java

package com.sweetlover.activity;import com.sweetlover.optionmenu.R;import android.app.Activity;import android.os.Bundle;import android.view.Menu;import android.view.MenuInflater;import android.view.MenuItem;import android.widget.Toast;public class MainActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {// TODO Auto-generated method stubsuper.onCreate(savedInstanceState);setContentView(R.layout.activity_main);}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {// TODO Auto-generated method stubMenuInflater inflater = getMenuInflater();inflater.inflate(R.menu.root, menu);return super.onCreateOptionsMenu(menu);}@Overridepublic boolean onPrepareOptionsMenu(Menu menu) {// TODO Auto-generated method stubreturn super.onPrepareOptionsMenu(menu);}@Overridepublic boolean onOptionsItemSelected(MenuItem item) {// TODO Auto-generated method stubswitch (item.getItemId()) {case R.id.delete:Toast.makeText(MainActivity.this, "删除菜单被点击了！", Toast.LENGTH_SHORT).show();break;case R.id.save:Toast.makeText(MainActivity.this, "保存菜单被点击了！", Toast.LENGTH_SHORT).show();break;case R.id.help:Toast.makeText(MainActivity.this, "帮助菜单被点击了！", Toast.LENGTH_SHORT).show();break;case R.id.add:Toast.makeText(MainActivity.this, "添加菜单被点击了！", Toast.LENGTH_SHORT).show();break;case R.id.detail:Toast.makeText(MainActivity.this, "详细菜单被点击了！", Toast.LENGTH_SHORT).show();break;case R.id.send:Toast.makeText(MainActivity.this, "发送菜单被点击了！", Toast.LENGTH_SHORT).show();break;}return super.onOptionsItemSelected(item);}@Overridepublic void onOptionsMenuClosed(Menu menu) {// TODO Auto-generated method stubsuper.onOptionsMenuClosed(menu);Toast.makeText(MainActivity.this, "选项菜单关闭了！", Toast.LENGTH_SHORT).show();}}

2.activity_main.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical"    android:padding="30dp" >    <TextView        android:id="@+id/textView1"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_gravity="center"        android:layout_marginTop="10dp"        android:textSize="20sp"        android:text="@string/tittle" />    <TextView        android:id="@+id/textView2"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_gravity="center"        android:layout_marginTop="10dp"        android:textSize="20sp"        android:text="@string/note" /></LinearLayout>

3.string.xml

<resources>    <string name="app_name">OptionMenu</string>    <string name="tittle">Option Menu Application</string>    <string name="note">单击 Menu 键</string>    <string name="oper1">删除</string>    <string name="oper2">保存</string>    <string name="oper3">帮助</string>    <string name="oper4">添加</string>    <string name="oper5">详细</string>    <string name="oper6">发送</string></resources>

4.res/menu/root.xml

<?xml version="1.0" encoding="utf-8"?><menu xmlns:android="http://schemas.android.com/apk/res/android" >    <group        android:id="@+id/group1"        android:layout_width="wrap_content"        android:layout_height="wrap_content" >        <item            android:id="@+id/delete"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:icon="@drawable/miku"            android:orderInCategory="1"            android:title="@string/oper1">        </item>        <item            android:id="@+id/save"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:icon="@drawable/miku"            android:orderInCategory="2"            android:title="@string/oper2">        </item>        <item            android:id="@+id/help"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:icon="@drawable/miku"            android:orderInCategory="3"            android:title="@string/oper3">        </item>        <item            android:id="@+id/add"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:icon="@drawable/miku"            android:orderInCategory="4"            android:title="@string/oper4">        </item>        <item            android:id="@+id/detail"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:icon="@drawable/miku"            android:orderInCategory="5"            android:title="@string/oper5">        </item>        <item            android:id="@+id/send"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:icon="@drawable/miku"            android:orderInCategory="6"            android:title="@string/oper6">        </item>    </group></menu>

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