Swift 4 UILabel animate Color

Question

I'm trying to solve a problem for days, I hope you are able to help me.

In the app that i'm programming i am using a UITextField. In that TextField I want the user to type the word that is seen on the UILabel.
If he types the correct character I want the character on the label turning green, if its wrong then the label should turn red.

Can anyone help me or give me an advice?

Answer 1

You will get the text in textField delegate and depending upon your condition call the function updateLabel()

func textField(_ textField: UITextField, shouldChangeCharactersIn range: NSRange, replacementString string: String) -> Bool {
    self.updateLabel(true, text: string)
    return true
}



func updateLabel(isCorrect:Bool, text: String){

    let textColor = isCorrect ? greenColor : redColor
      let attributedStringColor = [NSAttributedStringKey.foregroundColor : textColor];

      let attributedString = NSAttributedString(string: text, attributes: attributedStringColor)
      label.attributedText = attributedString
}