protected override void OnElementChanged(ElementChangedEventArgs <Xamarin.Forms.Button> e)
{
base.OnElementChanged(e);
if (e.OldElement != null || Element == null)
{
return;
}
if (e.NewElement is CustomGradientBackgroundButton button)
{
Button = button;
Control.Touch += (object sender, TouchEventArgs args) =>
{
switch (args.Event.Action)
{
case MotionEventActions.Down:
button.IsPressed = true;
Invalidate();
break;
case MotionEventActions.Up:
button.IsPressed = false;
Invalidate();
button.SendClicked();
break;
}
};
}
}
protected override void OnElementChanged(ElementChangedEventArgs <Button> e)
{
base.OnElementChanged(e);
if (e.OldElement != null)
{
return;
}
if (Equals(_button, null))
{
_button = e.NewElement as CustomGradientBackgroundButton;
}
Control.TouchDown += delegate
{
_button.IsPressed = true;
SetNeedsDisplay();
};
Control.TouchUpInside += delegate
{
_button.IsPressed = false;
SetNeedsDisplay();
};
}
