Android 动态更换桌面图标

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每当双 11、12 来临之际，Android 手机 Launcher 中的淘宝、天猫图标就会变成双 11、12 主题的图标。实现了动态切换图标、名称

MainActivity

package com.example.modifyappdemo;import android.app.Activity;
import android.app.ActivityManager;
import android.content.ComponentName;
import android.content.pm.PackageManager;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;import static android.content.pm.PackageManager.COMPONENT_ENABLED_STATE_DISABLED;public class MainActivity extends AppCompatActivity implements View.OnClickListener { private Button changeIcon;
private ActivityManager activityManager;
private PackageManager packageManager;
private boolean setIcon = true; @Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
activityManager = (ActivityManager) this.getSystemService(Activity.ACTIVITY_SERVICE);
packageManager = getPackageManager();
changeIcon = findViewById(R.id.changeIcon);
changeIcon.setOnClickListener(this);
} @Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.changeIcon:
if ("SecondApp".equals(getTitle())) {
setIcon = false;
} else {
setIcon = true;
} packageManager.setComponentEnabledSetting(new ComponentName(this, "com.example.modifyappdemo.MainActivity"),
setIcon == true ? COMPONENT_ENABLED_STATE_DISABLED : PackageManager.COMPONENT_ENABLED_STATE_ENABLED,
PackageManager.DONT_KILL_APP); packageManager.setComponentEnabledSetting(new ComponentName(this, "com.example.modifyappdemo.changeAfter"),
setIcon == true ? PackageManager.COMPONENT_ENABLED_STATE_ENABLED : PackageManager.COMPONENT_ENABLED_STATE_DISABLED,
PackageManager.DONT_KILL_APP);
break;
default:
break;
}
}
}

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.modifyappdemo">
<uses-permission android:name="android.permission.KILL_BACKGROUND_PROCESSES"/>
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<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:icon="@mipmap/alias_icon"
android:label="@string/app_name2"
android:name="changeAfter"
android:targetActivity=".MainActivity"
android:enabled="false">
<intent-filter>
<action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity-alias> </application></manifest>