protected override void OnElementChanged(ElementChangedEventArgs <View> e)
{
base.OnElementChanged(e);
if (e.OldElement != null)
{
var mapModel = (Map)e.OldElement;
MessagingCenter.Unsubscribe <Map, MapSpan>(this, "MapMoveToRegion");
((ObservableCollection <Pin>)mapModel.Pins).CollectionChanged -= OnCollectionChanged;
}
if (e.NewElement != null)
{
var mapModel = (Map)e.NewElement;
if (Control == null)
{
SetNativeControl(new MKMapView(RectangleF.Empty));
var mkMapView = (MKMapView)Control;
var mapDelegate = new MapDelegate(mapModel);
mkMapView.GetViewForAnnotation = mapDelegate.GetViewForAnnotation;
mkMapView.RegionChanged += MkMapViewOnRegionChanged;
}
MessagingCenter.Subscribe <Map, MapSpan>(this, "MapMoveToRegion", (s, a) => MoveToRegion(a), mapModel);
if (mapModel.LastMoveToRegion != null)
{
MoveToRegion(mapModel.LastMoveToRegion, false);
}
UpdateMapType();
UpdateIsShowingUser();
UpdateHasScrollEnabled();
UpdateHasZoomEnabled();
((ObservableCollection <Pin>)mapModel.Pins).CollectionChanged += OnCollectionChanged;
OnCollectionChanged(((Map)Element).Pins, new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Reset));
}
}
protected override void OnElementChanged(ElementChangedEventArgs<View> e)
{
base.OnElementChanged(e);
if (e.OldElement != null)
{
var mapModel = (Map)e.OldElement;
MessagingCenter.Unsubscribe<Map, MapSpan>(this, "MapMoveToRegion");
((ObservableCollection<Pin>)mapModel.Pins).CollectionChanged -= OnCollectionChanged;
}
if (e.NewElement != null)
{
var mapModel = (Map)e.NewElement;
if (Control == null)
{
SetNativeControl(new MKMapView(RectangleF.Empty));
var mkMapView = (MKMapView)Control;
var mapDelegate = new MapDelegate(mapModel);
mkMapView.GetViewForAnnotation = mapDelegate.GetViewForAnnotation;
mkMapView.RegionChanged += MkMapViewOnRegionChanged;
}
MessagingCenter.Subscribe<Map, MapSpan>(this, "MapMoveToRegion", (s, a) => MoveToRegion(a), mapModel);
if (mapModel.LastMoveToRegion != null)
MoveToRegion(mapModel.LastMoveToRegion, false);
UpdateMapType();
UpdateIsShowingUser();
UpdateHasScrollEnabled();
UpdateHasZoomEnabled();
((ObservableCollection<Pin>)mapModel.Pins).CollectionChanged += OnCollectionChanged;
OnCollectionChanged(((Map)Element).Pins, new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Reset));
}
}