Swift - UITapGestureRecognizer for parent view only - swift

Question

I have a UIViewController with a subview of a UIView. I add a UITapGestureRecognizer to the UIViewController to dismiss the view, but when I tap on the subview, the whole view still dismisses and I only want to dismiss when tapping the parent view.
var backgroundView = UIView()
override func viewDidLoad() {
super.viewDidLoad()
view.backgroundColor = .clear
let tap = UITapGestureRecognizer(target: self, action: #selector(didTapOutsideBackgroundView))
tap.numberOfTapsRequired = 1
view.addGestureRecognizer(tap)
setupUI()
}
func setupUI() {
view.addSubview(backgroundView)
backgroundView.translatesAutoresizingMaskIntoConstraints = false
backgroundView.layer.cornerRadius = 8
NSLayoutConstraint.activate([
backgroundView.topAnchor.constraint(equalTo: view.topAnchor, constant: distanceFromTop ?? 0),
backgroundView.leadingAnchor.constraint(equalTo: view.leadingAnchor),
backgroundView.trailingAnchor.constraint(equalTo: view.trailingAnchor),
backgroundView.bottomAnchor.constraint(equalTo: view.bottomAnchor)
])
backgroundView.backgroundColor = .systemBackground
// add subviews to backgroundView
backgroundView.addSubview(pageTitle)
backgroundView.addSubview(closeButton)
backgroundView.addSubview(itemLabel)
backgroundView.addSubview(itemNameLabel)
backgroundView.addSubview(priceLabel)
backgroundView.addSubview(quantityLabel)
backgroundView.addSubview(itemQuantityLabel)
backgroundView.addSubview(itemOriginalPriceLabel)
}
#objc func didTapOutsideBackgroundView(sender: UITapGestureRecognizer) {
print("called")
dismiss(animated: true)
}

Answer 1

You can find tapped view and ignore the tap if its a backgroundView with this in your didTapOutsideBackgroundView
#objc func didTapOutsideBackgroundView(sender: UITapGestureRecognizer) {
let location = sender.location(in: self.view)
if let view = self.view.hitTest(location, with: nil), let guester = view.gestureRecognizers {
if guester.contains(sender) {
print("Parent tapped")
dismiss(animated: true)
}
} else {
print("Ignore tap")
}
}

Answer 2

One solution can be check if it is subview or not & ignore based on that.
func gestureRecognizer(gestureRecognizer: UIGestureRecognizer, shouldReceiveTouch touch: UITouch) -> Bool {
if touch.view.isDescendantOfView(yourSubView){ // this will check if this is subview of the main view or not..
return false
}
return true
}