swift - 如何在 swift 的注册页面中强制输入用户名

Question

我使用 firebase 电子邮件和密码身份验证创建了一个注册页面。目前，用户无需输入用户名即可创建帐户。我如何强制他们输入用户名？

        @IBOutlet weak var nameTextField: UITextField!
    @IBOutlet weak var emailTextField: UITextField!
    @IBOutlet weak var passwordTextField: UITextField!
    @IBOutlet weak var profileUploader: UIImageView!

  var refD:FIRDatabaseReference?
    var refS: FIRStorageReference?

    override func viewDidLoad() {
        super.viewDidLoad()
        refD = FIRDatabase.database().reference()
        refS = FIRStorage.storage().reference()
        profileUploader.layer.cornerRadius = 2
        profileUploader.clipsToBounds = true
    }

    @IBAction func registerTapped(_ sender: Any) {
        let namec = nameTextField.text
        if let email = emailTextField.text, let pass = passwordTextField.text, let name = namec?.capitalized {
            FIRAuth.auth()?.createUser(withEmail: email, password: pass, completion: { (user, error) in
                if user != nil {
                    //user found

                    let interval = NSDate().timeIntervalSince1970
                    let date = Date(timeIntervalSince1970: interval)
                    let dateFormatter = DateFormatter()
                  dateFormatter.dateFormat = "dd/MM/yyyy/HH/mm/SS"
                    // you can change the date format to whatever you wants
                    let dateString = dateFormatter.string(from: date)
                    print(dateString)




                    self.refD?.child("Users").child((user?.uid)!).setValue(["Email": email, "Name": name, "User Created": dateString])
                    print("User Created And Added To Database", email, name, dateString)
                    self.performSegue(withIdentifier: "registertologin", sender: self)
                }

Answer 1

Swift 3X...

Please change this line

if let email = emailTextField.text, let pass = passwordTextField.text, let name = namec?.capitalized{
 //code
  } 

in this line ...

 if let email = emailTextField.text, let pass = passwordTextField.text, let name = (namec?.capitalized.isEmpty)! ? nil:namec{{
 //code
  }