IF/ELSE语句总是转到ELSE？[副本]

Question

基本上，我要做的就是获取textfields数据，将其放入数组中，然后检查用户名/密码是否大于或等于6。我完全搞不懂为什么这总是要去别的地方？答案大概很明显，但我卡住了！

代码：

import UIKit

class SignUpVC: UIViewController {

//MARK: Outlets
@IBOutlet weak var usernameTextField: UITextField!
@IBOutlet weak var passwordTextField: UITextField!
@IBOutlet weak var showErrorLabel: UILabel!

//MARK: Actions
@IBAction func goBackToLoginButton(_ sender: Any) {

    let username: String = usernameTextField.text!
    let password: String = passwordTextField.text!

    //username/password content into an array
    let userNameArray = ["\(username)"]
    let passwordArray = ["\(password)"]

    //Checks to see if username & password is greater than or equal to 6
    if userNameArray.count >= 6 && passwordArray.count >= 6 {
        print("Username and password is greater than or equal to 6!")
    } else {
        print("Username and password is less than 6!")
        showErrorLabel.isHidden = false
    }

    //Dismiss old views
    dismiss(animated: true, completion: nil)
}

override func viewDidLoad() {
    super.viewDidLoad()
}

Answer 1

正如@Martin R所指出的，您的两个数组都由一个元素组成，因此.count在这种情况下返回1。

由于您试图检查密码和用户名长度是否为>=6，因此根本不需要数组。就这样代替吧

let userName: String = usernameTextField.text!
let password: String = passwordTextField.text!

if userName.characters.count >= 6 && password.characters.count >= 6
{
  print("Username and password is greater than or equal to 6!")
}
else
{
   print("Username or password is less than 6!")
   showErrorLabel.isHidden = false
}