Detecting a tap on a CAShapeLayer in Swift?

Question

I\'m quite new to iOS Development (so please forgive my ineptitude - I\'ve looked everywhere!), and was looking to find a way to detect a tap on a CAShapeLayer.

Answer 1

Swift 4 & 5

My UIImageView has multiple embedded CAShapeLayer objects. Here is how I was able to detect taps on them. Referenced from this tutorial.

override func touchesBegan(_ touches: Set, with event: UIEvent?) {
    let touch = touches.first

    guard let point = touch?.location(in: imageView) else { return }
    guard let sublayers = imageView.layer.sublayers as? [CAShapeLayer] else { return }

    for layer in sublayers {
        if let path = layer.path, path.contains(point) {
            print(layer)
        }
    }
}