android 一個應用多個圖標

以前實現一個應用多個圖標的效果總是用 alias， 現在發現在android應用的描述文件添加對應的activity描述也可以實現一個應用多個圖標的效果，對應的AndroidManifest.xml文件如下：

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.sziauto.coninueSendCmd"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk android:minSdkVersion="15" />

    <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name" >
        <activity
            android:name=".ContinueSendCmdActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        
        <activity
            android:name=".SecondActivity"
            android:icon="@drawable/ic_audio_out_fm"
            android:label="@string/second_app">
           <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        
        <activity-alias
            android:name="@string/alias_name"
            android:label="@string/alias_test"
            android:icon="@drawable/fm_channel_select"
            android:targetActivity=".ContinueSendCmdActivity">
            <intent-filter>  
                <action android:name="com.android.contacts.action.IMPORT_FROM_SIM" />
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.DEFAULT" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>  
            
        </activity-alias>
       
    </application>

</manifest>