Call UIButton AddTarget in the same class - ios

Question

I have a simple view V and view controller C. The controller calls a separate class X that build a webview and a button to close the webview.
I instantiate class X (with a reference to view V) then call a method to attach both items (webview and items).
When i call the button addTarget method, it does not work. I want it to execute the closeAll method of the X class and not the closeAll method of the C controller.
I have tried hundreds of variants.
Here is (parts of) the code in C controller:
let parentView:UIView
...
#objc func closeAll() {
print("Close webview, object")
}
and this in X class:
...
let transparentButton = UIButton(frame: frame)
transparentButton.backgroundColor = UIColor.black.withAlphaComponent(self.overlayTransparency)
transparentButton.setTitle("", for: .normal)
transparentButton.alpha = 0.5
transparentButton.isUserInteractionEnabled = true
transparentButton.addTarget(self, action:#selector("closeAll"), for: .touchUpInside)
parentView.addSubview(transparentButton)
I have this in my C controller and it get called on click:
#objc func closeAll() {
print("Close webview, main")
}

Answer 1

Change self to instance of a class that you want it's method to be triggered

Answer 2

You can insert either of these into your class:
override func viewDidLoad() {
super.viewDidLoad()
transparentButton.addTarget(self, action:#selector(closeAll), for: .UIControlEvents.valueChanged)
}
func closeAll(sender:AnyObject) {
// your code
}
OR
#IBOutlet var btnStartJob: UIButton!
override func viewDidLoad() {
super.viewDidLoad()
btnStartJob.addTarget(self, action: #selector(closeAll), for: .touchUpInside)
}
func closeAll(_ sender : UIButton) {
// your code
}