protected override void OnDetached()
{
touchEvents.TouchBegin -= OnTouchBegin;
touchEvents.TouchEnd -= OnTouchEnd;
touchEvents.TouchCancel -= OnTouchEnd;
view.RemoveGestureRecognizer(touchRecognizer);
touchRecognizer.Delegate?.Dispose();
touchRecognizer.Delegate = null;
touchRecognizer.Dispose();
touchEvents = null;
touchRecognizer = null;
layer.RemoveFromSuperview();
layer.Dispose();
layer = null;
view = null;
}
protected override void OnAttached()
{
view = Control ?? Container;
view.UserInteractionEnabled = true;
layer = new UIView
{
Alpha = 0,
Opaque = false,
UserInteractionEnabled = false
};
view.AddSubview(layer);
layer.TranslatesAutoresizingMaskIntoConstraints = false;
layer.TopAnchor.ConstraintEqualTo(view.TopAnchor).Active = true;
layer.LeftAnchor.ConstraintEqualTo(view.LeftAnchor).Active = true;
layer.BottomAnchor.ConstraintEqualTo(view.BottomAnchor).Active = true;
layer.RightAnchor.ConstraintEqualTo(view.RightAnchor).Active = true;
view.BringSubviewToFront(layer);
touchEvents = new TouchEvents();
touchRecognizer = new TouchEventsGestureRecognizer(touchEvents);
touchRecognizer.Delegate = new ShouldRecognizeSimultaneouslyRecognizerDelegate();
view.AddGestureRecognizer(touchRecognizer);
touchEvents.TouchBegin += OnTouchBegin;
touchEvents.TouchEnd += OnTouchEnd;
touchEvents.TouchCancel += OnTouchEnd;
UpdateEffectColor();
}
public TouchEventsGestureRecognizer(TouchEvents events) => this.events = events;