正しい答えが書かれているときは正しいか、間違った答えが書かれたときは正しくないかは、どのようにクイズショーのanswerlabelを作るのですか？

Question

次に、正解のみが書かれている場合、次の質問ボタンのみを表示する方法は？私はスイフトを使用しています！以下は私のコードです。どんな助けでも大歓迎です！ありがとう！

これは私のコードで、 輸入のUIKit

class InputViewController1: UIViewController, UITextFieldDelegate { 

@IBOutlet var questionLabel: UILabel! 

@IBOutlet var correctAnswerLabel: UILabel! 

@IBOutlet var inputTextField: UITextField! 

var enteredAnswer: String? 

var correctAnswer = "Correct Answer = Small" 

override func viewDidLoad() { 
     super.viewDidLoad() 

    // Do any additional setup after loading the view. 
      NSNotificationCenter.defaultCenter().addObserver(self, selector: #selector(InputViewController1.keyboardWillShow(_:)), name: UIKeyboardWillShowNotification, object: nil) 
    NSNotificationCenter.defaultCenter().addObserver(self, selector: #selector(InputViewController1.keyboardWillHide), name: UIKeyboardWillHideNotification, object: nil) 

    inputTextField.delegate = self 

    titlesForLabels() 
} 

override func didReceiveMemoryWarning() { 
    super.didReceiveMemoryWarning() 
    // Dispose of any resources that can be recreated. 
} 

func titlesForLabels() { 
    questionLabel.text = "What is the size of the lesion(s)?" 
    correctAnswerLabel.text = correctAnswer 
    correctAnswerLabel.hidden = true 

    inputTextField.text = nil 
    inputTextField.enabled = true 
} 

func keyboardWillShow(notification: NSNotification) { 
    let userInfo = notification.userInfo! 

    let keyboardFrame = (userInfo[UIKeyboardFrameEndUserInfoKey] as! NSValue).CGRectValue() 

    UIView.animateWithDuration(0.1, animations: {() -> Void in 
     self.view.frame.origin.y = -keyboardFrame.size.height 
    }) 
} 

func keyboardWillHide() { 
    UIView.animateWithDuration(0.1, animations: {() -> Void in 
     self.view.frame.origin.y = 0 
    }) 
} 

func textFieldShouldReturn(textField: UITextField) -> Bool { 
    textField.resignFirstResponder() 

    enteredAnswer = textField.text 

    checkForCorrectAnswer() 

    return true 
} 

func checkForCorrectAnswer() { 
    if enteredAnswer!.lowercaseString == correctAnswer.lowercaseString { 
     print("Correct") 
     correctAnswerLabel.textColor = UIColor.greenColor() 
    } else { 
     print("Wrong Answer") 
     correctAnswerLabel.textColor = UIColor.redColor() 

    } 
    correctAnswerLabel.hidden = false 
} 

}

Answer 1

で質問をする前に、非常に慎重にこのコードを検討してください。 UIControlEvents.EditingChanged（.EditingChanged）のaddTargetメソッドを使用すると、現在のinputTextFieldの現在の値でInputViewControllerのプロパティを変更できます。これはtextDidChange関数で行われます。また、nexButton.alphaは、0.0のviewDidLoadに設定され、textDidChangeとcheckForCorrectAnswerの両方に応じて変更されています。

class InputViewController1: UIViewController, UITextFieldDelegate { 

    @IBOutlet weak var questionLabel: UILabel! 

    @IBOutlet weak var correctAnswerLabel: UILabel! 

    @IBOutlet weak var inputTextField: UITextField! 

    @IBOutlet weak var nextButton: UIButton! 

    @IBAction func nextButtonPressed(sender: UIButton) { 


    } 

    var enteredAnswer: String? 

    var correctAnswer = "Small" 

    override func viewDidLoad() { 
    super.viewDidLoad() 
    NSNotificationCenter.defaultCenter().addObserver(self, selector: #selector(InputViewController1.keyboardWillShow(_:)), name: UIKeyboardWillShowNotification, object: nil) 
    NSNotificationCenter.defaultCenter().addObserver(self, selector: #selector(InputViewController1.keyboardWillHide), name: UIKeyboardWillHideNotification, object: nil) 

    inputTextField.addTarget(self, action: #selector(InputViewController1.textDidChange(_:)), forControlEvents: .EditingChanged) 

    inputTextField.delegate = self 

    nextButton.alpha = 0.0 

    titlesForLabels() 
    } 

    func titlesForLabels() { 
    questionLabel.text = "What is the size of the lesion(s)?" 
    correctAnswerLabel.text = correctAnswer 
    correctAnswerLabel.hidden = true 

    inputTextField.text = nil 
    inputTextField.enabled = true 
    } 

    func keyboardWillShow(notification: NSNotification) { 
    let userInfo = notification.userInfo! 

    let keyboardFrame = (userInfo[UIKeyboardFrameEndUserInfoKey] as! NSValue).CGRectValue() 

    UIView.animateWithDuration(0.1, animations: { 
     self.view.frame.origin.y = -keyboardFrame.size.height 
    }) 
    } 

    func keyboardWillHide() { 
    UIView.animateWithDuration(0.1, animations: { 
     self.view.frame.origin.y = 0 
    }) 
    } 

    func textFieldShouldReturn(textField: UITextField) -> Bool { 
    textField.resignFirstResponder() 

    enteredAnswer = textField.text 

    checkForCorrectAnswer() 

    return true 
    } 

    func checkForCorrectAnswer() { 
    if enteredAnswer!.lowercaseString == correctAnswer.lowercaseString { 
     correctAnswerLabel.textColor = UIColor.greenColor() 
     UIView.animateWithDuration(0.5, animations: { 
     self.nextButton.alpha = 1.0 
     }, completion: nil) 
     correctAnswerLabel.text = "Correct!" 
    } else { 
     print("Wrong Answer") 
     correctAnswerLabel.textColor = UIColor.redColor() 
     correctAnswerLabel.text = "Incorrect!" 
    } 
    correctAnswerLabel.hidden = false 
    } 

    func textDidChange(sender: UITextField) { 
    enteredAnswer = inputTextField.text 
    correctAnswerLabel.textColor = UIColor.redColor() 
    correctAnswerLabel.text = "Incorrect!" 
    if enteredAnswer!.lowercaseString != correctAnswer.lowercaseString { 
     UIView.animateWithDuration(0.5, animations: { 
     self.nextButton.alpha = 0.0 
     }, completion: nil) 
    } 
    } 

}