swift uitapgesturerecognizer pass parameters - swift

Question

I have a lot of Buttons created programmatically and that can change anytime. my tap gesture :
let apriVideoGesture = UITapGestureRecognizer(target: self, action: #selector(PrincipaleController.apriVideo(_:)))
cont.addGestureRecognizer(apriVideoGesture)
func apriVideo(sender : UITapGestureRecognizer){
}
how can i pass parameters? somethig like this :
let apriVideoGesture = UITapGestureRecognizer(target: self, action: #selector(PrincipaleController.apriVideo(stringa : "ciao")))
cont.addGestureRecognizer(apriVideoGesture)
func apriVideo(sender : UITapGestureRecognizer, stringa : String){
}
sorry for bad english, i'm italian

Answer 1

First of all, if you are using button then why are you adding tap gesture? You can add target to it as
btn.addTarget(self, action: #selector(self.btnPressed(_:)), forControlEvents: .TouchDragInside)
But still you can achieve you goal using tap gesture as
Using UIView as u have insisted
class ViewController: UIViewController {
let arrayOfSongsURL: [String] = []
let startingTag = 100
override func viewDidLoad() {
super.viewDidLoad()
let height : CGFloat = 100
let width : CGFloat = 100
(arrayOfSongsURL as NSArray).enumerateObjectsUsingBlock { (url, index, finished) -> Void in
let v = UIView(frame: CGRectMake(0, CGFloat(index) * height, width, height))
v.tag = self.startingTag + index
v.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(self.handleTapGesture(_:))))
self.view.addSubview(v)
}
// Do any additional setup after loading the view, typically from a nib.
}
#objc func handleTapGesture(gesture : UITapGestureRecognizer)
{
let v = gesture.view!
let tag = v.tag
let songURL = arrayOfSongsURL[tag - startingTag]
//Do what you want to do with songURL
}
}