xamarinmobile

private void Setup()
        {
            if (this.geolocator != null)
                return;

            this.geolocator = new Geolocator (this) { DesiredAccuracy = 50 };
            if (!this.geolocator.IsListening)
            {
                if (!this.geolocator.IsGeolocationAvailable || !this.geolocator.IsGeolocationEnabled)
                {
#if DEBUG
                    Toast.MakeText (this, "Geolocation is unavailable", ToastLength.Long).Show();
#endif
                    return;
                }


                this.geolocator.StartListening (minTime: 30000, minDistance: 0);
            }
            else
            {
                this.geolocator.StopListening();
            }
            //this.geolocator.PositionError += OnListeningError;
            //this.geolocator.PositionChanged += OnPositionChanged;
        }

        public void OnGetPosition (Activity act)
        {
            Setup();

            this.cancelSource = new CancellationTokenSource();

            this.geolocator.GetPositionAsync (timeout: 10000, cancelToken: this.cancelSource.Token)
                .ContinueWith (t => act.RunOnUiThread (() =>
                {
                    if(t.IsFaulted == false && t.IsCanceled == false)
                    {
                        CurrentLocation = t.Result;
                        geolocator.StopListening();

                    }
                }));
        }