How to pass data forward between View Controllers - Swift - ios

Question

Hi I would like to know why every-time i ask for the emailCatched value in the second VC, I always get nil. Isn't how you pass data forward? Sorry if it's very basic.
I wrote the same code for passing the password from VC2 to VC3 and it works, it's weird. Thanks
First VC :
class EmailAddressViewController: UIViewController {
let emailField: UITextField = {
let emailField = UITextField()
return emailField
}()
private let continueButton: UIButton = {
let button = UIButton()
return button
}()
override func viewDidLoad() {
super.viewDidLoad()
// SubViews
view.backgroundColor = .white
view.frame = view.bounds
view.addSubview(emailField)
view.addSubview(continueButton)
// I omitted the frames
continueButton.addTarget(self,
action: #selector(continueButtonTapped),
for: .touchUpInside)
}
#objc private func continueButtonTapped() {
let email = emailField.text,
let vc = PasswordViewController()
vc.emailCatched = email
self.present(PasswordViewController(), animated: true)
}
}
Second VC (PasswordViewController) :
class PasswordViewController: UIViewController {
private let passwordField: UITextField = {
let passwordField = UITextField()
passwordField.autocapitalizationType = .none
passwordField.autocorrectionType = .no
passwordField.returnKeyType = .next
passwordField.layer.cornerRadius = 10
passwordField.layer.borderWidth = 1
passwordField.layer.borderColor = UIColor.darkGray.cgColor
passwordField.placeholder = "Mot de passe"
passwordField.textAlignment = .center
passwordField.backgroundColor = .white
passwordField.translatesAutoresizingMaskIntoConstraints = false
passwordField.isSecureTextEntry = true
return passwordField
}()
private let continueButton: UIButton = {
let button = UIButton()
button.setTitle("Continuer", for: .normal)
button.backgroundColor = .systemGreen
button.setTitleColor(.white, for: .normal)
button.layer.cornerRadius = 25
button.layer.masksToBounds = true
button.titleLabel?.font = .systemFont(ofSize: 20, weight: .bold)
button.translatesAutoresizingMaskIntoConstraints = false
return button
}()
var emailCatched: String?
// MARK: viewDidLoad
override func viewDidLoad() {
super.viewDidLoad()
print(emailCatched!) // returns error or nil
// SubViews
view.backgroundColor = .white
view.frame = view.bounds
view.addSubview(passwordField)
view.addSubview(continueButton)
continueButton.addTarget(self,
action: #selector(continueButtonTapped),
for: .touchUpInside)
}
// function bouton continuer
#objc private func continueButtonTapped() {
passwordField.resignFirstResponder()
guard let password = passwordField.text,
!password.isEmpty,
password.count >= 8 else {
alertInvalidPassword()
return
}
let vc = NamesViewController()
// vc.emailCatched = emailCatched!
vc.passwordCatched = password
HapticsManager.shared.vibrate(for: .success)
self.presenter(vc, animated: false, pushing: true, completion: nil)
}
}