How to add UIGestureRecongnizer programmatically on custom views that are created via code? - swift

Question

I want to add a UITapGestureRecognizer to my view named SetView. My setviews are created programmatically on another custom view called GridView.
This is what I have tried so far but I am not seeing any action while tapping my subvies.
import UIKit
#IBDesignable
class GridView: UIView {
private(set) lazy var deckOfCards = createDeck()
lazy var grid = Grid(layout: Grid.Layout.fixedCellSize(CGSize(width: 128.0, height: 110.0)), frame: CGRect(origin: CGPoint(x: bounds.minX, y: bounds.minY), size: CGSize(width: bounds.width, height: bounds.height)))
lazy var listOfSetCard = createSetCards()
private func createDeck() -> [SetCard] {
var deck = [SetCard]()
for shape in SetCard.Shape.allShape {
for color in SetCard.Color.allColor {
for content in SetCard.Content.allContent {
for number in SetCard.Number.allNumbers {
deck.append(SetCard(shape: shape, color: color, content: content, rank: number))
}
}
}
}
deck.shuffle()
return deck
}
private func createSetCards() -> [SetView] {
var cards = [SetView]()
for _ in 0..<cardsOnScreen {
let card = SetView()
let contentsToBeDrawn = deckOfCards.removeFirst()
card.combinationOnCard.shape = contentsToBeDrawn.shape
card.combinationOnCard.color = contentsToBeDrawn.color
card.combinationOnCard.content = contentsToBeDrawn.content
card.combinationOnCard.rank = contentsToBeDrawn.rank
/* print(contentsToBeDrawn.color) */
addSubview(card)
cards.append(card)
}
return cards
}
override func layoutSubviews() {
super.layoutSubviews()
for index in listOfSetCard.indices {
let card = listOfSetCard[index]
if let rect = grid[index] {
card.frame = rect.insetBy(dx: 2.5, dy: 2.5)
card.frame.origin = rect.origin
print(card.frame.origin)
}
}
}
Here is the function didTap(sender: UITapGestureRecognizer) that I wrote on SetView:
#objc func didTap(sender: UITapGestureRecognizer) {
switch sender.state {
case .changed,.ended:
let rect = UIBezierPath(rect: bounds)
fillBoundingRect(inRect: rect, color: UIColor.gray)
default:
break
}
And ViewController:
import UIKit
class ViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
for _ in 1...12 {
let card = game.drawModelCard()
game.deck.append(card)
}
}
lazy var game = SetGame()
weak var setView : SetView! {
didSet {
let tapGestureRecognizer = UITapGestureRecognizer(target:
setView, action: #selector(SetView.didTap(sender:)))
setView.isUserInteractionEnabled = true
setView.addGestureRecognizer(tapGestureRecognizer)
}
}
}
My subviews(SetViews) should change the background color once tapped.