Detect moment when newline starts in UITextView

Question

I try to detect when carriage goes at new line in UITextView. I can detect it by comparison total later width with UITextView width:

CGSize size = [textView.         


        

Answer 1

For Swift use this

previousRect = CGRectZero

 func textViewDidChange(textView: UITextView) {

        var pos = textView.endOfDocument
        var currentRect = textView.caretRectForPosition(pos)
        if(currentRect.origin.y > previousRect?.origin.y){
            //new line reached, write your code
        }
        previousRect = currentRect

    }