UIGestureTap to dismiss view - ios

Question

I am trying to enable UIGestureTap on a custom view. I have a view controller, and in that view controller, when I press a button, a custom view pops up.
var transparentBackground = UIView()
#IBAction func UserViewImage(_ sender: UIButton) -> Void {
self.transparentBackground = UIView(frame: UIScreen.main.bounds)
self.transparentBackground.backgroundColor = UIColor(white: 0.0, alpha: 0.4)
UIApplication.shared.keyWindow!.addSubview(self.transparentBackground)
self.opaqueView = self.setupOpaqueView()
self.transparentBackground.addSubview(opaqueView)
UIApplication.shared.keyWindow!.bringSubview(toFront: self.transparentBackground)
self.view.bringSubview(toFront: transparentBackground)
}
I want to be able to tap on the transparentBackground view and dismiss it. So I have a dismiss function called removeAnimate()
func removeAnimate()
{
UIView.animate(withDuration: 0.25, animations: {
self.transparentBackground.transform = CGAffineTransform(scaleX: 1.3, y: 1.3)
self.transparentBackground.alpha = 0.0;
}, completion:{(finished : Bool) in
if (finished)
{
self.transparentBackground.removeFromSuperview()
}
});
}
So, in viewdidload I enabled the UITapGesture:
let gestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(removeAnimate))
self.transparentBackground.addGestureRecognizer(gestureRecognizer)
self.transparentBackground.isUserInteractionEnabled = true
I know the function removeAnimate works because I used it on a button in the transparentBackground view and it works perfectly. But when I tap on the transparentBackground view it does not dismiss and I am not sure what I am doing wrong
func setupOpaqueView() -> UIView{
let mainView = UIView(frame: CGRect(x: 16, y: 132, width: Int(UIScreen.main.bounds.width-32), height: 403))
mainView.backgroundColor = UIColor.clear
mainView.layer.cornerRadius = 6
self.imageView = UIImageView(frame: CGRect(x: 29, y: 18, width: 274, height: 350))
mainView.addSubview(OKbutton)
mainView.addSubview(self.imageView)
OKbutton.addTarget(self, action: #selector(ThirdWheelViewController.handleOKButtonTapped(_:)), for: .touchUpInside)
return mainView
}

Answer 1

This is an example and hope it helps you:
First of all create a variable:
var customView:UIView!
This is going to be our function for adding a custom view:
#IBAction func customAction(_ sender: AnyObject) {
self.customView = UIView.init(frame: CGRect.init(x: self.view.bounds.width / 2, y: self.view.bounds.height / 2, width: 100, height: 100))
self.customView.backgroundColor = UIColor.red
self.view.addSubview(self.customView)
let tap = UITapGestureRecognizer.init(target: self, action: #selector(self.removeFromSuperView))
tap.numberOfTapsRequired = 1
self.customView.addGestureRecognizer(tap)
}
And finally:
func removeFromSuperView() {
self.customView.alpha = 1.0
self.customView.transform = .identity
UIView.animate(withDuration: 0.3, animations: {
self.customView.alpha = 0.0
self.customView.transform = .init(scaleX: 1.5, y: 1.5)
}) { (finished) in
if !finished {
} else {
self.customView.removeFromSuperview()
}
}
}