Change character spacing on UILabel within Interface Builder

Question

Is there anyway to change the character spacing (track) on UILabel text using Interface Builder? If not, is there a way to do it programmatically on an existing UILabel that

Answer 1

Here is a solution for Swift 4 that won't override existing text attributes:

extension UILabel {

    /**
     Add kerning to a UILabel's existing `attributedText`
     - note: If `UILabel.attributedText` has not been set, the `UILabel.text`
     value will be returned from `attributedText` by default
     - note: This method must be called each time `UILabel.text` or
     `UILabel.attributedText` has been set
     - parameter kernValue: The value of the kerning to add
     */
    func addKern(_ kernValue: CGFloat) {
        guard let attributedText = attributedText,
            attributedText.string.count > 0,
            let fullRange = attributedText.string.range(of: attributedText.string) else {
                return
        }
        let updatedText = NSMutableAttributedString(attributedString: attributedText)
        updatedText.addAttributes([
            .kern: kernValue
            ], range: NSRange(fullRange, in: attributedText.string))
        self.attributedText = updatedText
    }
}