How to get height for NSAttributedString at a fixed width

Question

I want to do some drawing of NSAttributedStrings in fixed-width boxes, but am having trouble calculating the right height they\'ll take up when drawn. So far, I\'ve tried:

Answer 1

Swift 4.2

let attributedString = self.textView.attributedText
let rect = attributedString?.boundingRect(with: CGSize(width: self.textView.frame.width, height: CGFloat.greatestFiniteMagnitude), options: [.usesLineFragmentOrigin, .usesFontLeading], context: nil)
print("attributedString Height = ",rect?.height)