protected override void OnElementChanged(ElementChangedEventArgs<Xamarin.Forms.Frame> e)
{
base.OnElementChanged (e);
if (e.NewElement != null) {
_frame = e.NewElement as GesturedFrame;
if (_frame.HasSwipeRightToLeft)
NativeView.AddGestureRecognizer (new UISwipeGestureRecognizer (g => _frame.DoSwipeRightToLeft ()) { Direction = UISwipeGestureRecognizerDirection.Left });
if (_frame.HasSwipeLeftToRight)
NativeView.AddGestureRecognizer (new UISwipeGestureRecognizer (g => _frame.DoSwipeLeftToRight ()) { Direction = UISwipeGestureRecognizerDirection.Right });
if (_frame.HasSwipeBottomToTop)
NativeView.AddGestureRecognizer (new UISwipeGestureRecognizer (g => _frame.DoSwipeBottomToTop ()) { Direction = UISwipeGestureRecognizerDirection.Up });
if (_frame.HasSwipeTopToBottom)
NativeView.AddGestureRecognizer (new UISwipeGestureRecognizer (g => _frame.DoSwipeTopToBottom ()) { Direction = UISwipeGestureRecognizerDirection.Down });
if (_frame.HasTap)
NativeView.AddGestureRecognizer (new UITapGestureRecognizer (g => _frame.DoTap ()) { NumberOfTapsRequired = 1 });
if (_frame.HasLongTap)
NativeView.AddGestureRecognizer (new UILongPressGestureRecognizer (g => _frame.DoLongTap ()));
}
}
