xml Android示例，说明如何向ActionBar添加自定义徽标并确保最佳匹配启动Window。

Posted 2021-05-17

<?xml version="1.0" encoding="UTF-8"?>
<resources>

    <style name="Theme.AnApp" parent="...">
        <item name="android:actionBarStyle">@style/Widget.ActionBar</item>
        <!-- ... -->
    </style>

    <style name="Theme.AnApp.Logo">
        <item name="android:actionBarStyle">@style/Widget.ActionBar.Logo</item>
        <!-- ... -->
    </style>

</resources>

<?xml version="1.0" encoding="UTF-8"?>
<resources>
    <style name="Widget.ActionBar" parent="...">
        <!-- ... -->
    </style>

    <style name="Widget.ActionBar.Logo">
        <item name="android:logo">@drawable/app_text_logo</item>
        <item name="android:displayOptions">useLogo|showHome</item>
    </style>
</resources>

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.cyrilmottier.android.anapp">
    
    <!-- ... -->
    
    <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/config_app_name"
        android:theme="@style/Theme.AnApp" >

        <activity
            android:name="com.cyrilmottier.android.anapp.LauncherActivity"
            android:theme="@style/Theme.AnApp.Logo">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        
        <!-- ... -->
        
    </application>

</manifest>