How to detect UITouch location visible in Swift 3 - swift

Question

I am trying to detect a UITouch event visible.When touch event begins.Currently, I am using below code to detect the touch location.From below code,I can able to print the touch location.Any,help would be greatly appreciated.
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?)
{
if let touch = touches.first {
let position :CGPoint = touch.location(in: view)
print(position.x)
print(position.y)
}
}
Note: I am not trying to draw a line or anything like a drawing app.I,Just want to see the touch event visibly.When happens.
Thanks in advance.

Answer 1

If you want a circle or something to appear when the user taps the screen, try this:
var touchIndicators: [UIView] = []
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
for touch in touches {
let location = touch.location(in: view)
let touchIndicator = UIView(frame: CGRect(x: location.x - 10, y: location.y - 10, width: 20, height: 20))
touchIndicator.alpha = 0.5
touchIndicator.backgroundColor = UIColor.red
touchIndicator.layer.cornerRadius = 10
self.view.addSubview(touchIndicator)
touchIndicators.append(touchIndicator)
}
}
override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) {
for indicator in touchIndicators {
indicator.removeFromSuperview()
}
touchIndicators = []
}
Pretty straightforward. Add circular views when the user touches the screen and remove them when the user lifts his/her fingers. You can also do this using UITapGestureRecognizer.