How to set kerning in iPhone UILabel

Question

I am developing an iPhone app, and I want to set kerning in UILabel. The code I\'ve written (possibly around kCTKernAttributeName) seems to be in error. How mig

Answer 1

Swift 4 and 5

extension NSAttributedString {

    /// Returns a new instance of NSAttributedString with same contents and attributes with kerning added.
    /// - Parameter kerning: a kerning you want to assign to the text.
    /// - Returns: a new instance of NSAttributedString with given kerning.
    func withKerning(_ kerning: CGFloat) -> NSAttributedString {
        let attributedString = NSMutableAttributedString(attributedString: self)
        attributedString.addAttributes([.kern: kerning],
                                       range: NSRange(location: 0, length: string.count))
        return NSAttributedString(attributedString: attributedString)
    }
 ]