iOS Swift: How to check if UILabel is truncated? Calculate number of lines for UILabel

UILabelCountLines.swift

func countLabelLines(label: UILabel) -> Int {
    // Call self.layoutIfNeeded() if your view uses auto layout
    let myText = label.text! as NSString

    let rect = CGSize(width: label.bounds.width, height: CGFloat.greatestFiniteMagnitude)
    let labelSize = myText.boundingRect(with: rect, options: .usesLineFragmentOrigin, attributes: [NSAttributedStringKey.font: label.font], context: nil)

    return Int(ceil(CGFloat(labelSize.height) / label.font.lineHeight))
}


extension UILabel {
    
    var isTruncated: Bool {
        
        guard let labelText = text else {
            return false
        }
        
        let labelTextSize = (labelText as NSString).boundingRect(with: CGSize(width: frame.size.width, height: .greatestFiniteMagnitude),options: .usesLineFragmentOrigin,attributes: [NSAttributedStringKey.font: font],context: nil).size
        
        return labelTextSize.height > bounds.size.height
    }
    
    
    var numberOfLinesVisible : Int {
        
        if let text = text{
            // cast text to NSString so we can use sizeWithAttributes
            let myText = text as NSString
            
            //Set attributes
            let attributes = [NSAttributedStringKey.font : font!]
            
            //Calculate the size of your UILabel by using the systemfont and the paragraph we created before. Edit the font and replace it with yours if you use another
            let labelSize = myText.boundingRect(with: CGSize(width: bounds.width,height: CGFloat.greatestFiniteMagnitude), options: .usesLineFragmentOrigin, attributes: attributes, context: nil)
            
            //Now we return the amount of lines using the ceil method
            let lines = ceil(CGFloat(labelSize.height) / font.lineHeight)
            return Int(lines)
        }
        
        return 0
    }
}