ZoomLevel and GeoCoordinates bindable?

[James Lavery]

I want to save the current ZoomLevel and GeoCoordinates, so that the next time the app is started the map displays the area the user was last viewing.

When I try binding these properties, the map does not display. Are they bindable? If not, how can I retrieve them?

Regards,

James

[Rachel A]

Hi James, 

 

Thanks for your interest in Syncfusion products. 

 

ZoomLevel and GeoCoordinates properties are bindable properties but does not provide two-way binding. Instead, you can get the current ZoomLevel from the ZoomLevelChanging event’s argument of e.CurrentLevel and get the current GeoCoordinates from the GeoCoordinateChanged event’s arguments of e.Center as like the below code snippet. 

 

[XAML] 

 

 

   <maps:ImageryLayer LayerType="OSM" 

                      GeoCoordinateChanged="ImageryLayer_GeoCoordinateChanged" 

                      ZoomLevelChanging="ImageryLayer_ZoomLevelChanging"/> 

 

 

C#: 

 

 

  private void ImageryLayer_GeoCoordinateChanged(object sender, Syncfusion.SfMaps.XForms.GeoCoordinateChangedEventArgs e) 

        { 

            geoPoints.Text = e.Center.X.ToString() + "," + e.Center.Y.ToString(); 

        } 

 

        private void ImageryLayer_ZoomLevelChanging(object sender, Syncfusion.SfMaps.XForms.ZoomLevelChangingEventArgs e) 

        { 

            resetZoom.Text = e.CurrentLevel.ToString(); 

        } 

 

 

 

We have prepared the sample for your reference. Please find the sample from the following location. 

 

Sample: http://www.syncfusion.com/downloads/support/forum/145337/ze/MapsSample1722988215 

 

Please refer the UG link for more information about this. 

 

https://help.syncfusion.com/xamarin/sfmaps/mapsprovider#events 

 

Thanks, 

Rachel.