Swift heightForAttributedString

heightForAttributedString

//For UIlabel
func heightForAttributedString(_ attributedString: NSAttributedString, width: CGFloat) -> CGFloat {
    let maxSize = CGSize(width: width, height: CGFloat.greatestFiniteMagnitude)
    let options: NSStringDrawingOptions = [.usesLineFragmentOrigin, .usesFontLeading]
    
    let boundingRect = attributedString.boundingRect(with: maxSize, options: options, context: nil)
    let height = ceil(boundingRect.height)
    
    return height
}
//Or
func heightForAttributedString(_ attributedString: NSAttributedString, width: CGFloat) -> CGFloat {
    let label = UILabel(frame: CGRect(x: 0, y: 0, width: width, height: CGFloat.greatestFiniteMagnitude))
    label.attributedText = attributedString
    label.numberOfLines = 0
    label.sizeToFit()
    
    return label.frame.height
}

//For UITextview
func heightForAttributedString(_ attributedString: NSAttributedString, width: CGFloat) -> CGFloat {
    let textView = UITextView(frame: CGRect(x: 0, y: 0, width: width, height: CGFloat.greatestFiniteMagnitude))
    textView.attributedText = attributedString
    
    let fixedWidth = width
    let newSize = textView.sizeThatFits(CGSize(width: fixedWidth, height: CGFloat.greatestFiniteMagnitude))
    
    return newSize.height
}