private void addOverLayForFlownRoute(MapWithRoute mapWithRoute, MKMapView nativeMap)
{
CLLocationCoordinate2D[] coords = new CLLocationCoordinate2D[mapWithRoute.FlownRoute.Count];
int index = 0;
foreach (var position in mapWithRoute.FlownRoute)
{
coords [index] = new CLLocationCoordinate2D(position.Lat, position.Lon);
index++;
}
var routeOverlay = MKPolyline.FromCoordinates(coords);
nativeMap.AddOverlay(routeOverlay);
}
protected override void OnElementChanged(Xamarin.Forms.Platform.Android.ElementChangedEventArgs <View> e)
{
base.OnElementChanged(e);
if (e.OldElement != null)
{
// Unsubscribe
}
if (e.NewElement != null)
{
var formsMap = (MapWithRoute)e.NewElement;
mapWithRoute = formsMap;
calculatedRoute = formsMap.CalculatedRoute;
flownRoute = formsMap.FlownRoute;
formsMap.PropertyChanged += OnChange;
((MapView)Control).GetMapAsync(this);
}
}
protected override void OnElementChanged(ElementChangedEventArgs <View> e)
{
base.OnElementChanged(e);
if (e.OldElement != null)
{
var nativeMap = Control as MKMapView;
nativeMap.OverlayRenderer = null;
}
if (e.NewElement != null)
{
var formsMap = (MapWithRoute)e.NewElement;
nativeMap = Control as MKMapView;
mapWithRoute = formsMap;
nativeMap.OverlayRenderer = GetOverlayRenderer;
nativeMap.OverlayRenderer = (m, o) => {
if (circleRenderer == null)
{
var circle = o as MKCircle;
if (circle != null)
{
circleRenderer = new MKCircleRenderer(circle);
circleRenderer.FillColor = UIColor.Blue;
circleRenderer.Alpha = 0.5f;
}
}
return(circleRenderer);
};
formsMap.PropertyChanged += OnChange;
addOverLayForCalulatedRoute(formsMap, nativeMap);
addOverLayForFlownRoute(formsMap, nativeMap);
}
}