Android：动态更新app启动图标和应用名

一、需求背景

每逢重要佳节，很多应用启动图标会自动更新为对应佳节的图标，应用无需更新。

二、效果图

更新后的启动图标和应用名称

三、实现流程

Android app只能替换内置的icon，因此需要提前将logo图标放入App资源文件件里
实际项目App更新桌面启动图标由服务器端控制，可以在App启动页里请求全局配置接口，根据接口返回的是否更新启动图标字段值进行处理。

大多数都是用activity-alias方式更新启动图标和应用名称，但是谷歌建议新建activity继承启动页的activity，新建的activity里面是空的。

下面的代码采用新建activity继承启动页的activity方式实现动态更新App启动图标和应用名称

3.1 AndroidManifest.xml代码

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools">

    <application
        android:allowBackup="true"
        android:dataExtractionRules="@xml/data_extraction_rules"
        android:fullBackupContent="@xml/backup_rules"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/Theme.Test"
        tools:targetApi="31">
        <activity
            android:name=".ui.activity.LauncherActivity"
            android:exported="true">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <!--   更改启动图标和应用名称     -->
        <!--        <activity-alias-->
        <!--            android:name=".ui.activity.NewMainActivity"-->
        <!--            android:enabled="false"-->
        <!--            android:exported="true"-->
        <!--            android:icon="@mipmap/ic_launcher_shlx"-->
        <!--            android:label="@string/app_name2"-->
        <!--            android:targetActivity=".ui.activity.MainActivity">-->
        <!--            <intent-filter>-->
        <!--                <action android:name="android.intent.action.MAIN" />-->

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

        <!--        </activity-alias>-->

        <activity
            android:name=".ui.activity.LauncherActivityNew"
            android:enabled="false"
            android:exported="true"
            android:icon="@mipmap/ic_launcher_mid_autumn_festival"
            android:label="@string/app_name2"
            android:targetActivity=".ui.activity.MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

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

        <activity
            android:name=".ui.activity.MainActivity"
            android:launchMode="standard"
            android:screenOrientation="portrait" />

        <activity
            android:name=".ui.activity.SettingActivity"
            android:launchMode="standard"
            android:screenOrientation="portrait" />
    </application>

</manifest>

注意：

3.2 activity_launcher.xml代码

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".ui.activity.LauncherActivity">

    <TextView
        android:id="@+id/tvSetLogo"
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:layout_margin="16dp"
        android:background="@color/black"
        android:gravity="center"
        android:text="启动页"
        android:textColor="@color/white"
        android:textSize="20sp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

</androidx.constraintlayout.widget.ConstraintLayout>

3.3 LauncherActivity.kt代码

package com.example.test.ui.activity

import android.content.ComponentName
import android.content.Intent
import android.content.pm.PackageManager
import android.os.Bundle
import androidx.appcompat.app.AppCompatActivity
import com.example.test.R
import com.example.test.utils.LogUtil


open class LauncherActivity : AppCompatActivity() {
    private lateinit var mPackageManager: PackageManager
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
//        enableEdgeToEdge()
        setContentView(R.layout.activity_launcher)
//        ViewCompat.setOnApplyWindowInsetsListener(findViewById(R.id.main)) { v, insets ->
//            val systemBars = insets.getInsets(WindowInsetsCompat.Type.systemBars())
//            v.setPadding(systemBars.left, systemBars.top, systemBars.right, systemBars.bottom)
//            insets
//        }

//        LogUtil.i("获取到的路径 simpleName：${ LunchActivity::class.java.simpleName}")
//        LogUtil.i("获取到的路径 packageName：${ LunchActivity::class.java.`package`.name}")
//        LogUtil.i("获取到的路径 name：${ LunchActivity::class.java.name}")
        /*
            获取到的路径 simpleName：LunchActivity
            获取到的路径 packageName：com.example.test.ui.activity
            获取到的路径 name：com.example.test.ui.activity.LunchActivity
         */


        initData()
        initView()
        initEvent()

        if (this::class.java.simpleName.equals(LauncherActivityNew::class.java.simpleName)) {
            LogUtil.i("没有 执行 updateLauncherIcon")
            startActivity(Intent(this, MainActivity::class.java))
            finish()
        } else {
            updateLauncherIcon()
        }
    }

    private fun initData() {
        mPackageManager = applicationContext.packageManager
    }

    private fun initView() {

    }

    private fun initEvent() {

    }

    private fun updateLauncherIcon() {
        LogUtil.i("执行了 updateLauncherIcon")
//            var festervalIcon = ComponentName(baseContext, "com.example.test.ui.activity.LunchActivity")
        var festervalIcon = ComponentName(baseContext, LauncherActivityNew::class.java.name)
        enableComponent(festervalIcon)
        disableComponent(componentName)
        startMainActivity()
    }

    /*
        PackageManager.DONT_KILL_APP
        PackageManager.SYNCHRONOUS
     */

    //启用组件
    private fun enableComponent(componentName: ComponentName) {
        mPackageManager.setComponentEnabledSetting(
            componentName,
            PackageManager.COMPONENT_ENABLED_STATE_ENABLED, PackageManager.DONT_KILL_APP
        )
    }

    //隐藏组件
    private fun disableComponent(componentName: ComponentName) {
        mPackageManager.setComponentEnabledSetting(
            componentName,
            PackageManager.COMPONENT_ENABLED_STATE_DISABLED, PackageManager.DONT_KILL_APP
        )
    }

    private fun startMainActivity() {
        val intent = Intent(this, MainActivity::class.java)
        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_DOCUMENT or Intent.FLAG_ACTIVITY_MULTIPLE_TASK)
        this.startActivity(intent)
        finish()
    }
}

3.4 LauncherActivityNew.kt代码

class LauncherActivityNew : LauncherActivity() {
}

3.5 activity_main.xml代码

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".ui.activity.LauncherActivity">

    <TextView
        android:id="@+id/tvSetLogo"
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:layout_margin="16dp"
        android:background="@color/black"
        android:gravity="center"
        android:text="打开设置页面"
        android:textColor="@color/white"
        android:textSize="20sp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />


</androidx.constraintlayout.widget.ConstraintLayout>

3.6 MainActivity.kt代码

package com.example.test.ui.activity

import android.content.Intent
import android.os.Bundle
import android.widget.TextView
import androidx.appcompat.app.AppCompatActivity
import com.example.test.R

class MainActivity : AppCompatActivity(R.layout.activity_main) {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)

        findViewById<TextView>(R.id.tvSetLogo).setOnClickListener {
            startActivity(
                Intent(
                    this,
                    SettingActivity::class.java
                )
            )
        }
    }
}

3.7 activity_setting.xml代码

<?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">

    <TextView
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:layout_gravity="center"
        android:gravity="center"
        android:text="设置"
        android:textColor="@color/black"
        android:textSize="20sp" />

</LinearLayout>

3.8 SettingActivity.kt代码

package com.example.test.ui.activity

import android.os.Bundle
import androidx.appcompat.app.AppCompatActivity
import com.example.test.R

class SettingActivity: AppCompatActivity(R.layout.activity_setting) {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
    }
}