[转] Android 在程序中如何动态的修改程序图标

http://*.com/a/41501402

亲测可以！
测试机器环境如下：
Meizu Mx4 - Android 5.1 - Flyme 5.1.11.1A

First prepare your new app icons for each resolution and put them into the corresponding mipmap folders.

Then use activity-alias, for example, in your AndroidManifest.xml, edit this:

<activity android:name=".MainActivity">
        <intent-filter>
            <action android:name="android.intent.action.MAIN"/>

            <category android:name="android.intent.category.LAUNCHER"/>
        </intent-filter>
    </activity>

    <activity-alias
        android:name=".MainAliasActivity"
        android:enabled="false"
        android:icon="@mipmap/ic_launcher_fight"
        android:label="Main Alias Activity"
        android:targetActivity=".MainActivity">
        <intent-filter>
            <action android:name="android.intent.action.MAIN"/>
            <category android:name="android.intent.category.LAUNCHER"/>
        </intent-filter>
    </activity-alias>

Add the following code when you want to change your app icon

PackageManager pm = getPackageManager();
        pm.setComponentEnabledSetting(
                getComponentName(),
                PackageManager.COMPONENT_ENABLED_STATE_DISABLED,
                PackageManager.DONT_KILL_APP);
        pm.setComponentEnabledSetting(
                new ComponentName(this, "YOUR PACKAGE.MainAliasActivity"),
                PackageManager.COMPONENT_ENABLED_STATE_ENABLED,
                PackageManager.DONT_KILL_APP);

To reset the app icon you can use the same way.

Github: https://github.com/chinglimchan/ChangeAppIcon