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一、前言

开机向导原理其实就是将特定的category的Activity加入ComponentResolver，如下

 <category android:name="android.intent.category.SETUP_WIZARD"/>

然后我们开机启动的时候，FallbackHome结束，然后启动Launcher的时候，就会找到对应的开机向导Activity页面。所以我们现定制我们自己的应用。

二、定制MyApp

1.清单文件，定义好权限和Launcer相关的category

<?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.WRITE_SETTINGS"tools:ignore="ProtectedPermissions" /><uses-permission android:name="android.permission.WRITE_SECURE_SETTINGS"tools:ignore="ProtectedPermissions" /><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.MyProvision2"tools:targetApi="31"><activityandroid:name=".MainActivity"android:exported="true"android:label="@string/app_name"android:theme="@style/Theme.MyProvision2"><intent-filter android:priority="2"><action android:name="android.intent.action.MAIN"/><category android:name="android.intent.category.HOME"/><category android:name="android.intent.category.DEFAULT"/><category android:name="android.intent.category.SETUP_WIZARD"/></intent-filter></activity></application></manifest>

2.MainActivity，简单一个页面，点击之后完成配置

package com.example.myprovision2import android.content.ComponentName
import android.content.pm.PackageManager
import android.os.Bundle
import android.provider.Settings
import androidx.activity.ComponentActivity
import androidx.activity.compose.setContent
import androidx.activity.enableEdgeToEdge
import androidx.compose.foundation.Image
import androidx.compose.foundation.clickable
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.padding
import androidx.compose.material3.OutlinedButton
import androidx.compose.material3.Scaffold
import androidx.compose.material3.Text
import androidx.compose.runtime.Composable
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.layout.ContentScale
import androidx.compose.ui.res.painterResource
import androidx.compose.ui.tooling.preview.Preview
import com.example.myprovision2.ui.theme.MyProvision2Themeclass MainActivity : ComponentActivity() {override fun onCreate(savedInstanceState: Bundle?) {super.onCreate(savedInstanceState)enableEdgeToEdge()setContent {MyProvision2Theme {Scaffold(modifier = Modifier.fillMaxSize()) { innerPadding ->Greeting(name = "Android",modifier = Modifier.padding(innerPadding))Box(Modifier.fillMaxSize(), contentAlignment = Alignment.Center) {Image(modifier=Modifier.fillMaxSize(),painter = painterResource(R.drawable.pic),contentScale = ContentScale.FillBounds,contentDescription = "")OutlinedButton(onClick = {finishSetup()}) {Text(text = "FINISH SET UP",)}}}}}}private fun finishSetup() {setProvisioningState()disableSelfAndFinish()}private fun disableSelfAndFinish() {// remove this activity from the package manager.val pm = packageManagerval name: ComponentName = ComponentName(this, MainActivity::class.java)pm.setComponentEnabledSetting(name, PackageManager.COMPONENT_ENABLED_STATE_DISABLED,PackageManager.DONT_KILL_APP)
//         terminate the activity.finish()}private fun setProvisioningState() {
//        Settings
//        Log.i(TAG, "Setting provisioning state")// Add a persistent setting to allow other apps to know the device has been provisioned.Settings.Global.putInt(contentResolver, Settings.Global.DEVICE_PROVISIONED, 1)Settings.Secure.putInt(contentResolver, Settings.Secure.USER_SETUP_COMPLETE, 1)}}@Composable
fun Greeting(name: String, modifier: Modifier = Modifier) {Text(text = "Hello $name!",modifier = modifier)
}@Preview(showBackground = true)
@Composable
fun GreetingPreview() {MyProvision2Theme {Greeting("Android")}
}

3.这里有特殊的权限，需要在system/etc/permissions内配置，我们准备一下权限的xml
com.example.myprovision2.xml

<?xml version="1.0" encoding="utf-8"?>
<!--~ Copyright (C) 2019 The Android Open Source Project~~ Licensed under the Apache License, Version 2.0 (the "License");~ you may not use this file except in compliance with the License.~ You may obtain a copy of the License at~~      http://www.apache.org/licenses/LICENSE-2.0~~ Unless required by applicable law or agreed to in writing, software~ distributed under the License is distributed on an "AS IS" BASIS,~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.~ See the License for the specific language governing permissions and~ limitations under the License-->
<permissions><privapp-permissions package="com.example.myprovision2"><permission name="android.permission.WRITE_SECURE_SETTINGS"/></privapp-permissions>
</permissions>

4.修改Android.bp

android_app_import {name: "MyApp",// this needs to be a privileged applicationprivileged: true,// Make sure the build system doesn't try to resign the APKdex_preopt: {enabled: false,},arch: {arm: {apk: "MyApp.apk",},arm64: {apk: "MyApp.apk",},x86: {apk: "MyApp.apk",},x86_64: {apk: "MyApp.apk",},},certificate: "platform",required: ["MyAppPermissions"],}// 定义 XML 文件复制规则 
prebuilt_etc {name: "MyAppPermissions",      // 模块唯一标识 src: "com.example.myprovision2.xml", // 源文件路径（相对于当前 Android.bp ）sub_dir: "permissions",        // 指定 system/etc 下的子目录 filename: "com.example.myprovision2.xml", // 目标文件名（可重命名）}

完成之后我们make MyApp就会自动复制权限xml到对应目录下。

三、验证

我们push apk和xml到对应目录下之后，然后重启设备。这里重启之前还需要重置一下变量

adb shell settings put secure user_setup_complete 0

这样解锁有就可以正常启动我们自定义的开机向导了。