ios - How to use NSUnderlineStyle.PatternDot

Question

I am trying to use NSMutableAttributedString with dotted underline below is my code but none of the Patterns seem to work am I missing something ?

var str : NSMutableAttributedString = NSMutableAttributedString(string: "HelloWorld")
        str.addAttribute(NSUnderlineStyleAttributeName  , value: NSNumber(integer:(NSUnderlineStyle.PatternDot).rawValue), range: NSMakeRange(0, str.length))

Answer 1

You have to do it like this:

Xcode 10 ? Swift 4.2 or later

yourLabel.attributedText = NSAttributedString(string: "Hello World !!!", attributes: [.underlineStyle: NSUnderlineStyle.patternDot.union(.single).rawValue])

Note: for older Swift syntax check edit history