android 进程保活

这是个老生常谈的话题了，随着安卓版本的提升，google对这一块的管控是越来越严格，好了废话不多说了，直接说思路。
我现在的方案是：双进程拉活(Java层)+前台保活服务（一般情况下不建议使用，这种app对用户不友好），如果你需要那接着往下看代码：

注意：1到6和进程保活相关；7到10和androidx还有kotlin配置相关（你项目配置好了，就不用管7到10）

1.ForegroundCoreService（前台服务）

class ForegroundCoreService : Service() {

    private lateinit var mForegroundNF: ForegroundNF

    //    private  var mForegroundNF: ForegroundNF      by lazy {
//        ForegroundNF(this)
//    }
    override fun onBind(intent: Intent?): IBinder? = null

    override fun onCreate() {
        super.onCreate()
        mForegroundNF = ForegroundNF(this)
        mForegroundNF.startForegroundNotification()
    }

    override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
        if (null == intent) {
            //服务被系统kill掉之后重启进来的
            return START_NOT_STICKY
        }
        mForegroundNF.startForegroundNotification()
        return super.onStartCommand(intent, flags, startId)
    }

    override fun onDestroy() {
        mForegroundNF.stopForegroundNotification()
        super.onDestroy()
    }

}

2.ForegroundNF（前台保活服务）

class ForegroundNF(private val service: ForegroundCoreService) : ContextWrapper(service) {

    companion object {
        private const val START_ID = 101
        private const val CHANNEL_ID = "app_foreground_service"
        private const val CHANNEL_NAME = "前台保活服务"
    }

    private var mNotificationManager: NotificationManager? = null

    private var mCompatBuilder: NotificationCompat.Builder? = null

    private val compatBuilder: NotificationCompat.Builder?
        get() {
            if (mCompatBuilder == null) {
                val notificationIntent = Intent(this, MainActivity::class.java)
                notificationIntent.action = Intent.ACTION_MAIN
                notificationIntent.addCategory(Intent.CATEGORY_LAUNCHER)
                notificationIntent.flags =
                    Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED
                //动作意图
                val pendingIntent = PendingIntent.getActivity(
                    this, (Math.random() * 10 + 10).toInt(),
                    notificationIntent, PendingIntent.FLAG_UPDATE_CURRENT
                )
                val notificationBuilder: NotificationCompat.Builder =
                    NotificationCompat.Builder(this, CHANNEL_ID)
                //标题
                notificationBuilder.setContentTitle(getString(R.string.app_name))
                //通知内容
                notificationBuilder.setContentText(getString(R.string.app_tips_content))
                //状态栏显示的小图标
                notificationBuilder.setSmallIcon(R.mipmap.ic_launcher)
                //通知内容打开的意图
                notificationBuilder.setContentIntent(pendingIntent)
                mCompatBuilder = notificationBuilder
            }
            return mCompatBuilder
        }

    init {
        createNotificationChannel()
    }

    //创建通知渠道
    private fun createNotificationChannel() {
        mNotificationManager =
            getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
        //针对8.0+系统
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            val channel = NotificationChannel(
                CHANNEL_ID,
                CHANNEL_NAME,
                NotificationManager.IMPORTANCE_LOW
            )
            channel.lockscreenVisibility = Notification.VISIBILITY_PUBLIC
            channel.setShowBadge(false)
            mNotificationManager?.createNotificationChannel(channel)
        }
    }

    //开启前台通知
    fun startForegroundNotification() {
        service.startForeground(START_ID, compatBuilder?.build())
    }

    //停止前台服务并清除通知
    fun stopForegroundNotification() {
        mNotificationManager?.cancelAll()
        service.stopForeground(true)
    }

}

3.MainActivity（activity_main.xml你随便写）

class MainActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        Thread(Runnable {
            try {
                Thread.sleep(1200)
            } catch (e: InterruptedException) {
                e.printStackTrace()
            }
            startActivity(Intent(this@MainActivity, Main2Activity::class.java))
        }).start()

    }
}

4.Main2Activity(activity_main2.xml你随便写)

public class Main2Activity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main2);
        //双进程拉活(Java层)
        startService(new Intent(this, ForegroundCoreService.class));
    }

}

5.strings文件

<resources>
    <string name="app_name">BaoHuoJUEJIN</string>
    <string name="app_tips_content">我可以让app存活更长久，请不要关闭我！</string>
</resources>

6.AndroidManifest.xml

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

    <uses-permission android:name="android.permission.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS" />
    <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />

    <application
        android:allowBackup="false"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="false"
        android:theme="@style/AppTheme">
        <activity android:name=".Main2Activity" />
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

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

        <service
            android:name=".service.ForegroundCoreService"
            android:enabled="true"
            android:exported="true" />
        
    </application>

</manifest>

7.app下面的build.gradle

apply plugin: 'com.android.application'

apply plugin: 'kotlin-android'

apply plugin: 'kotlin-android-extensions'

android {
    compileSdkVersion 30
    buildToolsVersion "30.0.2"
    defaultConfig {
        applicationId "com.pop.baohuojuejin"
        minSdkVersion 21
        targetSdkVersion 30
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
    implementation 'androidx.appcompat:appcompat:1.0.2'
    implementation 'androidx.core:core-ktx:1.0.2'
    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'androidx.test.ext:junit:1.1.0'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.1'
}

8.项目下的build.gradle

// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
    ext.kotlin_version = '1.3.50'
    dependencies {
        classpath 'com.android.tools.build:gradle:4.1.3'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
    repositories {
        //阿里云镜像地址：
        //central仓和jcenter仓的聚合仓
        maven { url 'https://maven.aliyun.com/repository/public' }
        //google镜像地址
        maven { url 'https://maven.aliyun.com/repository/google' }
        google()
        jcenter()
    }
}

allprojects {
    repositories {
        //阿里云镜像地址：
        //central仓和jcenter仓的聚合仓
        maven { url 'https://maven.aliyun.com/repository/public' }
        //google镜像地址
        maven { url 'https://maven.aliyun.com/repository/google' }

        google()
        jcenter()
        
    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}

9.gradle.properties文件

org.gradle.jvmargs=-Xmx1536m
android.useAndroidX=true
android.enableJetifier=true
kotlin.code.style=official

10.gradle版本配置

微信截图_20220831110233.png

都看到这里了，给个小红心吧~