private void InvokeTapEvent(Xamarin.Forms.View view, Xamarin.Forms.TapGestureRecognizer tgr, UIView uiView, UITapGestureRecognizer nativeTgr)
{
if (tgr.Command != null)
{
if (tgr.Command.CanExecute(tgr.CommandParameter))
{
tgr.Command.Execute(tgr.CommandParameter);
}
}
else
{
InvkokeEvent(tgr, "Tapped", view, EventArgs.Empty);
}
}
protected override void OnElementChanged(Xamarin.Forms.Platform.iOS.ElementChangedEventArgs <Cross2DView> e)
{
base.OnElementChanged(e);
if (nativeView == null)
{
nativeView = new NativeView();
SetNativeControl(nativeView);
context = new Context(nativeView, 1.0f /*(float)UIScreen.MainScreen.Scale*/);
}
if (e.OldElement != null)
{
nativeView.DrawView -= OnDrawView;
e.OldElement.DeletedInternal();
}
if (e.NewElement != null)
{
nativeView.DrawView += OnDrawView;
e.NewElement.CreatedInternal(this);
foreach (var gr in e.NewElement.GestureRecognizers)
{
if (gr is Xamarin.Forms.TapGestureRecognizer)
{
Xamarin.Forms.TapGestureRecognizer tgr = gr as Xamarin.Forms.TapGestureRecognizer;
nativeView.AddGestureRecognizer(new UITapGestureRecognizer(g =>
{ InvokeTapEvent(e.NewElement, tgr, Control, g); })
{
NumberOfTapsRequired = (nuint)tgr.NumberOfTapsRequired
});
}
else if (gr is Xamarin.Forms.PinchGestureRecognizer)
{
Xamarin.Forms.PinchGestureRecognizer pgr = gr as Xamarin.Forms.PinchGestureRecognizer;
nativeView.AddGestureRecognizer(new UIPinchGestureRecognizer(g =>
{ InvkokeEvent(pgr, "PinchUpdated", e.NewElement, CreatePinchEventArgs(Control, g)); }));
}
}
}
}
