protected async override void OnAppearing()
        {
            Plugin.Geolocator.Abstractions.Position currentPosition = null;
            var locator = CrossGeolocator.Current;

            try
            {
                var status = await CrossPermissions.Current.CheckPermissionStatusAsync(Permission.Location);

                if (status != PermissionStatus.Granted)
                {
                    if (await CrossPermissions.Current.ShouldShowRequestPermissionRationaleAsync(Permission.Location))
                    {
                        await DisplayAlert("Konum izni gerekli", "Uygulama konum bilgisini kullanmalı", "Tamam");
                    }



                    var results = await CrossPermissions.Current.RequestPermissionsAsync(Permission.Location);

                    status = results[Permission.Location];
                    if (status == PermissionStatus.Granted)
                    {
                        currentPosition = await locator.GetPositionAsync(TimeSpan.FromSeconds(10));
                    }
                    else
                    {
                        currentPosition = await locator.GetLastKnownLocationAsync();
                    }
                }
                else if (status == PermissionStatus.Granted)
                {
                    currentPosition = await locator.GetPositionAsync(TimeSpan.FromSeconds(10));
                }
                else if (status != PermissionStatus.Unknown)
                {
                    await DisplayAlert("Konum izni verilmedi", "Bu sayfayı kullanabilmeniz için konum izni vermelisiniz.", "Tamam");
                }
            }
            catch (Exception ex)
            {
                await DisplayAlert("Konum özellğiğinin açılması gerekli", ex.Message, "Tamam");
            }

            MapSpan region = null;
            Map     map    = null;

            if (currentPosition != null)
            {
                region = MapSpan.FromCenterAndRadius(
                    new Position(currentPosition.Latitude, currentPosition.Longitude), Distance.FromMiles(3));
            }
            else
            {
                // hasal'dan başlat 41.013929, 29.038842
                region = MapSpan.FromCenterAndRadius(
                    new Position(41.013929, 29.038842), Distance.FromMiles(3));
            }

            map = new Map(region)
            {
                IsShowingUser   = true,
                HeightRequest   = 100,
                WidthRequest    = 960,
                VerticalOptions = LayoutOptions.FillAndExpand
            };



            FirebaseService firebaseService = new FirebaseService();
            var             locationList    = await firebaseService.GetLocations();

            #region pins
            foreach (var item in locationList)
            {
                double latitude  = Convert.ToDouble(item.Position.ToString().Split(',')[0], CultureInfo.InvariantCulture);
                double longitude = Convert.ToDouble(item.Position.ToString().Split(',')[1], CultureInfo.InvariantCulture);
                var    position  = new Position(latitude, longitude); // Latitude, Longitude
                var    pin       = new Pin
                {
                    Type     = PinType.Place,
                    Position = position,
                    Label    = item.Title,
                    Address  = item.Text,
                };

                pin.Clicked += (sender, args) => {
#if __IOS__
                    button.IsEnabled = true;
                    button.Text      = pin.Label + " için yol tarifi";
#endif
                    selectedPinName  = pin.Label;
                    selectedPosition = pin.Position;
                };

                map.Pins.Add(pin);
            }

            #endregion

            var stack = new StackLayout {
                Spacing = 0
            };
            stack.Children.Add(map);

#if __IOS__
            button = new Button()
            {
                Text            = "Yol tarifi",
                VerticalOptions = LayoutOptions.End,
                IsEnabled       = false
            };

            button.Clicked += (sender, args) => {
                if (selectedPosition != null)
                {
                    CrossExternalMaps.Current.NavigateTo(selectedPinName, selectedPosition.Latitude, selectedPosition.Longitude);
                }
            };

            button.BackgroundColor = Color.White;
            button.TextColor       = Color.FromHex("#823642");
            stack.Children.Add(button);
#endif

            Content = stack;
            base.OnAppearing();
        }