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
bash
<?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
bash
<?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
bash
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
bash
class LauncherActivityNew : LauncherActivity() {
}
3.5 activity_main.xml代码
bash
<?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
bash
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
bash
<?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
bash
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)
}
}