GpsTrackerService

GpsTrackerService.cs

 [Service]
    public class GpsTrackerService : Service
    {
        bool _isStarted;
        static readonly int TimerWait = 60000; // every 60 seconds
        Timer _timer;

        public override StartCommandResult OnStartCommand(Intent intent, StartCommandFlags flags, int startId)
        {
            if (!_isStarted)
            {
                _timer = new Timer(HandleTimerCallback, null, 0, TimerWait);
                _isStarted = true;
                MetricsManagerHelper.Instance.SendGenericMessageToApplicationInsights("Gps-Info", "Timer started.");
            }

            return StartCommandResult.Sticky;
        }

        public void HandleTimerCallback(object state)
        {
            if (CrossConnectivity.Current.IsConnected)
            {
                Task.Run(async () =>
                {
                    TruckFahrerGeoData truckFahrerGeoData = new TruckFahrerGeoData();

                    try
                    {
                        var locator = CrossGeolocator.Current;
                        locator.DesiredAccuracy = 10;
                        // Timeout 5 seconds
                        var position = await locator.GetPositionAsync(TimeSpan.FromSeconds(10));

                        await GeoLocationDataManager.Instance.PersistGeoLocationData(position, truckFahrerGeoData);
                    }
                    catch (Exception e)
                    {
                        Dictionary<string, string> telemetryDictionary = new Dictionary<string, string>();
                        var serializedGeoData = JsonConvert.SerializeObject(truckFahrerGeoData);
                        telemetryDictionary.Add("TruckFahrerGeoData", serializedGeoData);

                        await MetricsManagerHelper.Instance.SendGenericMessageToApplicationInsightsAsync("Gps-Error", e.Message, telemetryDictionary);
                    }
                });
            }
        }

        public override IBinder OnBind(Intent intent)
        {
            // This is a started service, not a bound service, so we just return null.
            return null;
        }

        public override void OnDestroy()
        {
            _timer.Dispose();
            _timer = null;
            _isStarted = false;
            MetricsManagerHelper.Instance.SendGenericMessageToApplicationInsights("Gps-Info", "Timer disposed.");

            base.OnDestroy();
        }
    }