CODEWITHSUNDEEP
iosswiftstring
TIMEX
TIMEX

Reputation: 272372

Updating UILabel while typing in UITextView

 override func textView(textView: UITextView, shouldChangeTextInRange range: NSRange, replacementText text: String) -> Bool {

      label.text = textView.text 
      return true;
}

With this code, I seem to be a character behind.

Upvotes: 0

Views: 106

Answers (3)

larva
larva

Reputation: 5148

You can use NSString replacingOccurrences(of:with:) to get typing text, like this

Swift2

func textView(textView: UITextView, shouldChangeTextInRange range: NSRange, replacementText text: String) -> Bool {
    let originText = textView.text as NSString
    let replacingText = originText.stringByReplacingCharactersInRange(range, withString: text)

    label.text = replacingText
    return true
}

Swift3

func textView(_ textView: UITextView, shouldChangeTextIn range: NSRange, replacementText text: String) -> Bool {
    let originText = textView.text as NSString
    let replacingText = originText.replacingCharacters(in: range, with: text)

    label.text = replacingText
    return true
}

Upvotes: -1

tebs1200
tebs1200

Reputation: 1195

shouldChangeTextInRange will be called before the text field's text value is changed.

Try putting your code in textViewDidChange instead:

func textViewDidChange(textView: UITextView) {
    label.text = textView.text
}

Upvotes: 3

vikingosegundo
vikingosegundo

Reputation: 52237

You are setting the previous textView's text. try:

 override func textView(textView: UITextView, shouldChangeTextInRange range: NSRange, replacementText text: String) -> Bool {

      label.text = text 
      return true;
}

as this method is called before the textView's new text is propagated.

Upvotes: 1

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