private void OnMapElementClick(MapControl sender, MapElementClickEventArgs args)
{
var mapIcon = args.MapElements.FirstOrDefault(x => x is MapIcon) as MapIcon;
if (mapIcon != null)
{
if (!xamarinOverlayShown)
{
var customPin = GetCustomPin(mapIcon.Location.Position);
if (customPin == null)
{
throw new Exception("Custom pin not found");
}
if (!String.IsNullOrEmpty(customPin.point.Name))
{
if (mapOverlay == null)
{
mapOverlay = new XamarinMapOverlay(customPin);
}
var snPosition = new BasicGeoposition {
Latitude = customPin.Position.Latitude, Longitude = customPin.Position.Longitude
};
var snPoint = new Geopoint(snPosition);
nativeMap.Children.Add(mapOverlay);
MapControl.SetLocation(mapOverlay, snPoint);
MapControl.SetNormalizedAnchorPoint(mapOverlay, new Windows.Foundation.Point(0.5, 1.0));
xamarinOverlayShown = true;
}
}
else
{
nativeMap.Children.Remove(mapOverlay);
mapOverlay = null;
xamarinOverlayShown = false;
}
}
}
protected override void OnElementChanged(ElementChangedEventArgs <Map> e)
{
base.OnElementChanged(e);
if (e.OldElement != null)
{
nativeMap.MapElementClick -= OnMapElementClick;
nativeMap.Children.Clear();
mapOverlay = null;
nativeMap = null;
}
if (e.NewElement != null)
{
var formsMap = (CustomMap)e.NewElement;
nativeMap = Control as MapControl;
customPins = formsMap.CustomPins;
nativeMap.Children.Clear();
nativeMap.MapElementClick += OnMapElementClick;
foreach (var pin in customPins)
{
var snPosition = new BasicGeoposition {
Latitude = pin.point.DegLatitude, Longitude = pin.point.DegLongitude
};
var snPoint = new Geopoint(snPosition);
var mapIcon = new MapIcon();
mapIcon.Image = RandomAccessStreamReference.CreateFromUri(new Uri("ms-appx:///Assets/point.png"));
mapIcon.CollisionBehaviorDesired = MapElementCollisionBehavior.RemainVisible;
mapIcon.Location = snPoint;
mapIcon.NormalizedAnchorPoint = new Windows.Foundation.Point(0.5, 0.5);
nativeMap.MapElements.Add(mapIcon);
}
}
}