Question

The UIGestureRecognizer reference says: “discrete events such as a tap or a swipe can not report changes within the gesture”

How can I get notified when a finger is just touching the screen (and hasn’t left it yet), and get then notified when it leaves the screen?

Thanks for your help!

Answer 1

you can detect touches by using

ObjC answer:

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event

Swift 3.0 answer:

func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?)
func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?)