gesture recognizer issue with tic tac toe in xcode - swift

Question

hello there i am trying to figure out what the issue is why i cant get a cross on the game board when a tap is made. the TTT class is the one below the first code and it is called in the main code. i will appreciate if some can help me on this
#IBOutlet var fields: [TTTImageView]!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
}
func fieldTapped (recognizer:UITapGestureRecognizer) {
let tappedField = recognizer.view as! TTTImageView
tappedField.setPlayer(_player: "x.png")
}
func setupField () {
for index in 0 ... fields.count - 1 {
let gestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(fieldTapped))
gestureRecognizer.numberOfTapsRequired = 1
fields[index].addGestureRecognizer(gestureRecognizer)
}
}
import UIKit
class TTTImageView: UIImageView {
var player:String?
var activated:Bool! = false
func setPlayer (_player:String) {
self.player = _player
if activated == false {
if _player == "x.png" {
self.image = UIImage (named: "x.png")
}else{
self.image = UIImage (named: "o.png")
}
activated = true
}
}
}

Answer 1

Make sure when you set fields[index].addGestureRecognizer(gestureRecognizer) to set isUserInteractionEnabled to true.
fields[index].isUserInteractionEnabled = true
Whenever you want to detect user activity (e.g. UITapGestureRecognizer on a UIImageView, you need to set this to true
EDIT:
I also wanted to mention something I noticed after looking at your code again: the method you are using for selectors has been deprecated. If you are using Swift 3 (which I highly recommend you do), you shouldn't call selectors like this: "functionName:" anymore. Now we use selectors like so: #selector(functionName(_:)). You should start updating your code to the most current syntax sooner rather than later.