Android服务-应用程序关闭后无法停止

我的问题是以下。我创建了即使在应用程序关闭后仍能赢的android服务。当应用程序处于活动状态时，我可以扫描该服务，并且可以看到它正在运行，并且可以停止它。当我完全关闭活动并启动应用程序时，我再次扫描活动服务，但在列表中找不到它。因此，如何在程序重新启动后停止服务，以便我可以指示服务是否仍在后台运行。我使用下面的方法检查服务。

public void IsServiceRunning()
    {
        ActivityManager activityManager = (ActivityManager)GetSystemService(Context.ActivityService);
        var list = activityManager.GetRunningServices(int.MaxValue);

        foreach(var item in list)
        {

            Toast.MakeText(ApplicationContext, item.Service.ClassName + " " + item.Started + " " + item.Service.Class, ToastLength.Short).Show();
            Log.Debug("++++++++++++++++++++++++++++++++++ ",  item.Service.ClassName + " " + item.Started + " " + item.Service.Class);
            if ( item.Service.ClassName.Contains("MyService"))
            {
                MessagingCenter.Send<string>("true", "CheckRunningService");
                //Toast.MakeText(ApplicationContext, item.Service.ShortClassName.ToString(), ToastLength.Short).Show();
                return;
            }



        }


        MessagingCenter.Send<string>("false", "CheckRunningService");

    }

服务编号

class MyService : Service 
{

    SmsBroadcastRceiver sms;
    public override void OnCreate()
    {
        base.OnCreate();

    }

    [return: GeneratedEnum]
    public override StartCommandResult OnStartCommand(Intent intent, [GeneratedEnum] StartCommandFlags flags, int startId)
    {

        //Toast.MakeText(this, "MyService Started", ToastLength.Long).Show();
        sms = new SmsBroadcastRceiver();
        RegisterReceiver(sms, new IntentFilter("SMS_RECEIVED"));


        return StartCommandResult.NotSticky;

    }


    public override void OnDestroy()
    {
        UnregisterReceiver(sms);
        StopSelf();

        //Toast.MakeText(this, "MyService Stopped", ToastLength.Long).Show();

        base.OnDestroy();

    }

    public override IBinder OnBind(Intent intent)
    {

        return null;
    }


}