UITapGestureRecognizer for UILabel inside of a StackView - swift

Question

I have a Stack View with two labels, one of which once tapped, suppose to lead to another view.
Here the code of my UIView subclass where labels and a StackView are setup:
import UIKit
import SnapKit
class WelcomeView: UIView {
weak var coordinator: MainCoordinator?
private let imageView: UIImageView = {
let imageView = UIImageView()
imageView.image = UIImage(named: "backGroundImage")
imageView.contentMode = .scaleAspectFill
imageView.layer.masksToBounds = true
return imageView
}()
private let questionLabel: UILabel = {
let questionLabel = UILabel()
questionLabel.text = "Don't have an Account?"
questionLabel.font = UIFont(name: "Avenir Next Regular", size: 17)
questionLabel.textColor = .black
return questionLabel
}()
private let signUpLabel: UILabel = {
let signUpLabel = UILabel()
let tap = UITapGestureRecognizer(target: self, action: #selector(ViewController.signUpTapped(tapGesture:)))
signUpLabel.text = "Sign Up"
signUpLabel.font = UIFont(name: "Avenir Next Regular", size: 17)
signUpLabel.textColor = .black
signUpLabel.highlightedTextColor = .link
signUpLabel.isHighlighted = true
signUpLabel.isUserInteractionEnabled = true
signUpLabel.addGestureRecognizer(tap)
return signUpLabel
}()
lazy var signUpstackView: UIStackView = {
let stackView = UIStackView(arrangedSubviews: [questionLabel, signUpLabel])
stackView.axis = .horizontal
stackView.alignment = .fill
stackView.distribution = .fill
stackView.spacing = 8
stackView.isUserInteractionEnabled = true
return stackView
}()
override init(frame: CGRect) {
super.init(frame: frame)
addSubViews()
}
required init?(coder: NSCoder) {
super.init(coder: coder)
addSubViews()
}
func addSubViews() {
self.backgroundColor = .white
self.addSubview(imageView)
self.addSubview(btnSignIn)
self.addSubview(signUpstackView)
setConstraints()
}
func setConstraints() {
imageView.snp.makeConstraints { (make) in
make.edges.equalToSuperview()
}
btnSignIn.snp.makeConstraints { (make) in
make.height.equalTo(60)
make.bottomMargin.equalTo(-50)
make.leftMargin.equalTo(28)
make.rightMargin.equalTo(-28)
}
signUpstackView.snp.makeConstraints { (make) in
make.height.equalTo(24)
make.centerX.equalTo(self)
make.top.equalTo(btnSignIn).offset(70)
}
}
}
I added UITapGestureRecognizer in signUpLabel.
And here is the code from my ViewController containing my IBAction function signUpTapped which is specified in UITapGestureRecognizer:
class ViewController: UIViewController {
var welcomeView = WelcomeView()
override func loadView() {
view = welcomeView
}
override func viewDidLoad() {
super.viewDidLoad()
}
#IBAction func signUpTapped(tapGesture:UITapGestureRecognizer) {
print("Tapped")
}
}
For some reason nothing is happened when I try to click on my SignUp Label. Is this an issue because my UILabel is inside of a StackView?

Answer 1

You need
Sol 1
let tap = UITapGestureRecognizer(target: self, action: #selector(self.signUpTapped(tapGesture:)))
then inside the view class
weak var delegate:ViewController?
#objc func signUpTapped(tapGesture:UITapGestureRecognizer) {
print("Tapped")
delegate?.tapped()
}
var welcomeView = WelcomeView()
override func loadView() {
welcomeView.delegate = self
view = welcomeView
}
func tapped(){}
Sol 2
weak var delegate:ViewController?
init(frame: CGRect,delegate:ViewController) {
super.init(frame: frame)
self.delegate = delegate
addSubViews()
}
With
let tap = delegate(target:delegate!, action: #selector(delegate!.signUpTapped(tapGesture:)))
and inside the vc
#objc func signUpTapped(tapGesture:UITapGestureRecognizer) {
print("Tapped")
}