Setting Label below Navigation Bar programmatically in Xcode - ios

Question

recently, I decided to quit using storyboards on my IOS app. So, am presently learning everything now with code. I was trying to place a label below navigationBar view but I got an error and I don't know how to debug it. Please view my code and share your thoughts.
class SellBaseViewController: UIViewController {
lazy var container: UIStackView = {
let stackView = UIStackView(frame: .zero)
stackView.alignment = .fill
stackView.axis = .vertical
stackView.spacing = 2
stackView.willSetConstraints()
return stackView
}()
lazy var navHeader: UIView! = {
return self.navBar()
}()
lazy var firstLabel: UILabel! = {
return self.labelOne()
}()
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
if !Authentication.shared.isAuthenticated {
showLogin()
} else {
self.setupInterface()
}
}
private func setupInterface() {
self.navigationController?.navigationBar.isHidden = true
self.embedInScrollView(content: self.container)
navHeader.willSetConstraints()
firstLabel.willSetConstraints()
self.container.addArrangedSubviews([self.navHeader!, self.firstLabel!])
DispatchQueue.main.async {
NSLayoutConstraint.activate([
self.navHeader.heightAnchor.constraint(equalToConstant: 44),
self.navHeader.widthAnchor.constraint(equalTo: self.view.widthAnchor),
self.navHeader.topAnchor.constraint(equalTo: self.container.topAnchor),
])
}
}
// MARK: NAVBAR
func navBar() -> UIView {
let navBar = UIView(frame: CGRect(origin: CGPoint(x: 0, y: 0), size: CGSize(width: self.view.frame.width, height: 44)))
navBar.backgroundColor = UIColor.constants.darkBlue
let backIcon = UIImage(named: "ic_back")?.withRenderingMode(.alwaysTemplate)
let returnButton = UIButton(type: .custom)
returnButton.imageView?.tintColor = UIColor.white
returnButton.setImage(backIcon, for: .normal)
returnButton.image(for: .normal)
returnButton.titleLabel?.font = UIFont(name: "Hind", size: 18)
returnButton.setTitle("Sell", for: .normal)
returnButton.setTitleColor(UIColor.white, for: .normal)
returnButton.addTarget(self, action: #selector(self._return), for: .touchUpInside)
returnButton.willSetConstraints()
navBar.addSubviews([returnButton])
NSLayoutConstraint.activate([
returnButton.centerYAnchor.constraint(equalTo: navBar.centerYAnchor),
returnButton.leadingAnchor.constraint(equalTo: navBar.leadingAnchor, constant: 11),
returnButton.heightAnchor.constraint(equalToConstant: 24),
returnButton.widthAnchor.constraint(equalToConstant: 71),
])
return navBar
}
func labelOne() -> UILabel{
let label = UILabel()
label.textAlignment = .center
label.textColor = .white
label.font = UIFont(name: "Avenir-Light", size: 15.0)
label.text = "This is a Label"
self.view.addSubview(label)
return labelOne()
}
#objc func _return() {
self.backHome()
}
}
The navBar showed well, but when I added the label, the app kept crashing with this error. I don't know how to find out exactly what the error is:
Thread 1: EXC_BAD_ACCESS (code=2, address=0x7ffee6703fe8)

Answer 1

func labelOne() -> UILabel{
let label = UILabel()
label.textAlignment = .center
label.textColor = .white
label.font = UIFont(name: "Avenir-Light", size: 15.0)
label.text = "This is a Label"
self.view.addSubview(label)
return labelOne()
}
You did:
return labelOne()
You should do:
return label