private static void OnMapCenterChanged(BindableObject instance, object oldValue, object newValue)
{
TKMapView map = (TKMapView)instance;
map.MapCenter = (GeoLocation)newValue;
if (map.MyMap.Height > 0)
{
map.InvalidateLayout(); //map will not center if it's still loading the view - call invalidate to force move after setting value
map.MyMap.MoveToMapRegion(TK.CustomMap.MapSpan.FromCenterAndRadius(map.MyMap.MapCenter, TK.CustomMap.Distance.FromMiles(2))); //zoom level is lost when loaded, so re-zoom
}
}
private static void OnLocationsChanged(BindableObject instance, object oldValue, object newValue)
{
TKMapView map = (TKMapView)instance;
map.Locations = (ObservableCollection <GeoLocation>)newValue;
}