How to check if UILabel is truncated?

Question

I have a UILabel that can be varying lengths depending on whether or not my app is running in portrait or landscape mode on an iPhone or iPad. When the text is

Answer 1

Make sure to call either of these in viewDidLayoutSubviews.

public extension UILabel {

    var isTextTruncated: Bool {
        layoutIfNeeded()
        return text?.boundingRect(with: CGSize(width: bounds.width, height: .greatestFiniteMagnitude), options: .usesLineFragmentOrigin, attributes: [NSAttributedString.Key.font: font!], context: nil).size.height ?? 0 > bounds.size.height
    }

    var isAttributedTextTruncated: Bool {
        layoutIfNeeded()
        return attributedText?.boundingRect(with: CGSize(width: bounds.width, height: .greatestFiniteMagnitude), options: .usesLineFragmentOrigin, context: nil).size.height ?? 0 > bounds.size.height
    }

}