双进程守护

定义一个本地服务，在该服务中播放无声音乐，并绑定远程服务。

class LocalService : Service() {
private var mediaPlayer: MediaPlayer? = null
private var mBilder: MyBilder? = null

override fun onCreate() {
super.onCreate()
if (mBilder == null) {
mBilder = MyBilder()
}
}

override fun onBind(intent: Intent): IBinder? {
return mBilder
}

override fun onStartCommand(intent: Intent, flags: Int, startId: Int): Int {
//播放无声音乐
if (mediaPlayer == null) {
mediaPlayer = MediaPlayer.create(this, R.raw.novioce)
//声音设置为0
mediaPlayer?.setVolume(0f, 0f)
mediaPlayer?.isLooping = true//循环播放
play()
}
//启用前台服务，提升优先级
if (KeepLive.foregroundNotification != null) {
val intent2 = Intent(applicationContext, NotificationClickReceiver::class.java)
intent2.action = NotificationClickReceiver.CLICK_NOTIFICATION
val notification = NotificationUtils.createNotification(this, KeepLive.foregroundNotification!!.getTitle(), KeepLive.foregroundNotification!!.getDescription(), KeepLive.foregroundNotification!!.getIconRes(), intent2)
startForeground(13691, notification)
}
//绑定守护进程
try {
val intent3 = Intent(this, RemoteService::class.java)
this.bindService(intent3, connection, Context.BIND_ABOVE_CLIENT)
} catch (e: Exception) {
}

//隐藏服务通知
try {
if (Build.VERSION.SDK_INT < 25) {
startService(Intent(this, HideForegroundService::class.java))
}
} catch (e: Exception) {
}

if (KeepLive.keepLiveService != null) {
KeepLive.keepLiveService!!.onWorking()
}
return Service.START_STICKY
}

private fun play() {
if (mediaPlayer != null &amp;&amp; !mediaPlayer!!.isPlaying) {
mediaPlayer?.start()
}
}

private inner class MyBilder : GuardAidl.Stub() {

@Throws(RemoteException::class)
override fun wakeUp(title: String, discription: String, iconRes: Int) {

}
}

private val connection = object : ServiceConnection {

override fun onServiceDisconnected(name: ComponentName) {
val remoteService = Intent(this@LocalService,
RemoteService::class.java)
this@LocalService.startService(remoteService)
val intent = Intent(this@LocalService, RemoteService::class.java)
this@LocalService.bindService(intent, this,
Context.BIND_ABOVE_CLIENT)
}

override fun onServiceConnected(name: ComponentName, service: IBinder) {
try {
if (mBilder != null &amp;&amp; KeepLive.foregroundNotification != null) {
val guardAidl = GuardAidl.Stub.asInterface(service)
guardAidl.wakeUp(KeepLive.foregroundNotification?.getTitle(), KeepLive.foregroundNotification?.getDescription(), KeepLive.foregroundNotification!!.getIconRes())
}
} catch (e: RemoteException) {
e.printStackTrace()
}

}
}

override fun onDestroy() {
super.onDestroy()
unbindService(connection)
if (KeepLive.keepLiveService != null) {
KeepLive.keepLiveService?.onStop()
}
}
}