I added below codes on ViewController
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
print("started")
}
override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) {
print("ended")
}
but it doesn't print any messages at all.
UIResponder class is an abstract interface for responding to and handling events Apple API Reference
UIWindow, UIViewController, UIView are subclass of UIResponder
if you want to use touchesBegan
and touchesEnded
, override it
touch event follow responder chain refer apple docs
some touch event occur and your ViewController's view become next responder and hittest successfully touchesBegan
called when touch began and touchesEnded
called touch ended