我用Kotlin做了一个前台服务。 它的工作，但在运行了七个小时后，我的服务停止和我的应用程序返回到它的第一页（登录页）。 但是停止我的服务的唯一方法是在我点击“停止服务”按钮时执行的，那么如果我没有按任何按钮，为什么我的服务会在7小时后停止呢？ 我用的是moto g7，安卓9.0

class RastreioService : Service() {

companion object {
    var serviceAtivado = false //service activated
}
override fun onBind(intent: Intent?): IBinder? {
    TODO("Not yet implemented")
}

override fun onCreate() {
    super.onCreate()
    serviceAtivado = true

    val notificationIntent = Intent(this, RastreioService::class.java)
    val pendingIntent = PendingIntent.getActivity(this, 0, notificationIntent, 0);

    val notification = Notification.Builder(this, "1")
        .setSmallIcon(R.drawable.ic_gps_ativo)
        .setContentTitle("Localização Sendo Acessada")
        .setContentText("A sua localização está sendo acessada")
        .setContentIntent(pendingIntent)
        .build()

    startForeground(1, notification)

    /*request location methods*/
}

override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {

    return START_NOT_STICKY
}

override fun onDestroy() {
    serviceAtivado = false
    super.onDestroy()
    this.gerenciadorDeLocalizacao.DesativarBuscaPorLocalizaca()
}

}