Underline button text in Swift

Question

I have UIButton. In interface builder I set its title to be \'Attributed\'. How can I make its title to be underlined from code in Swift?

@IBOutlet weak var myBt         


        

Answer 1

Based on some of previous answers I decide to make a class that can be easy implemented into your apps

Swift 4

import UIKit

class UnderlineTextButton: UIButton {

override func setTitle(_ title: String?, for state: UIControlState) {
    super.setTitle(title, for: .normal)
    self.setAttributedTitle(self.attributedString(), for: .normal)
}

private func attributedString() -> NSAttributedString? {
    let attributes : [NSAttributedStringKey : Any] = [
        NSAttributedStringKey.font : UIFont.systemFont(ofSize: 19.0),
        NSAttributedStringKey.foregroundColor : UIColor.red,
        NSAttributedStringKey.underlineStyle : NSUnderlineStyle.styleSingle.rawValue
    ]
    let attributedString = NSAttributedString(string: self.currentTitle!, attributes: attributes)
    return attributedString
  }
}

From code I call it on such a way button.setTitle(author, for: .normal)