Detect any tap outside the current view

Question

Is there a way to detect any tap outside the current view? I unsuccessfully tried to implement something with the hitTest method but I am not sure to understand it well.

Answer 1

You can use UIGestureRecognizerDelegate protocol

    extension YourViewController: UIGestureRecognizerDelegate {

      func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer,
                             shouldReceive touch: UITouch) -> Bool {
        return (touch.view === self.view)
      } 
    }

This will only returns "true" when the touch was on the background view but "false" if it was inside the your View.

Note : The identity operator === to compare touch.view with self.view. You want to know whether both variables refer to the same object.

And in viewDidLoad() you will create the gestureRecognizer and set delegate.

let gestureRecognizer = UITapGestureRecognizer(target: self,action: #selector(yourActionMethod))
gestureRecognizer.cancelsTouchesInView = false
gestureRecognizer.delegate = self
view.addGestureRecognizer(gestureRecognizer)