[swift] UITextView글자수 제한(붙여넣기)

 

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

        let newText = (textView.text as NSString).replacingCharacters(in: range, with: text)

        let numberOfChars = newText.count

        if(numberOfChars > 200){

            let leng = 200 - textView.text.characters.count

            textView.text = (textView.text as NSString).replacingCharacters(in: range, with: text.substring(r:0..<leng))

        }

    }