清单文件

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"><uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/><applicationandroid: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.AutoStart"tools:targetApi="31"><activityandroid:name=".MainActivity"android:exported="true"><intent-filter><action android:name="android.intent.action.MAIN" /><category android:name="android.intent.category.LAUNCHER" /></intent-filter></activity><receiverandroid:name=".SystemBootBroadcastReceiver"android:enabled="true"android:exported="true"><intent-filter><action android:name="android.intent.action.BOOT_COMPLETED" /><action android:name="android.intent.action.ACTION_SHUTDOWN"/></intent-filter></receiver></application></manifest>

代码

/** 手机系统启动广播接收者，当系统启动时，启动我们的app。注：第一次安装时，需要手动启动一次，否则开机时不会自动启动  */
class SystemBootBroadcastReceiver : BroadcastReceiver() {override fun onReceive(context: Context, intent: Intent) {when (intent.action) {Intent.ACTION_BOOT_COMPLETED -> {Log.i("BootComplete", "广播收到系统启动")context.startActivity(Intent(context, MainActivity::class.java).also { it.flags = Intent.FLAG_ACTIVITY_NEW_TASK })}Intent.ACTION_SHUTDOWN -> {Log.i("BootComplete", "广播收到系统关机")}}}}