Multiline NSAttributed String as UIButton Title

Question

My question is similar in theory to this one: iOS NSAttributedString on UIButton

I am looking to make the title of my button read as:

"An underlined string

Some text"

This needs to be done in swift and 100% programmatically.

I am attempting to do this by creating the underlined section using an NSMutableAttributedString and then appending that to the other text (which leads with a newline character). However, that gives me the error "Cannot assign value of type 'Void' ('aka'()') to type 'NSMutableAttributedString"

Code below:

var patientName = NSMutableAttributedString(string:"Patient Name", attributes: underlineAttributes)
var clickforinfomessage = NSMutableAttributedString(string: "\nclick for patient info")
clickforinfomessage = clickforinfomessage.appendAttributedString(patientName)
startVisitButton.setAttributedTitle(clickforinfomessage, forState: .Normal)

Answer 1

You can do it this way:

let dict1 = [NSUnderlineStyleAttributeName: NSUnderlineStyle.StyleSingle.rawValue]

let attString = NSMutableAttributedString()
attString.appendAttributedString(NSAttributedString(string: "Patient Name\n", attributes: dict1))
attString.appendAttributedString(NSAttributedString(string: "click for patient info", attributes: nil))
startVisitButton.setAttributedTitle(attString, forState: .Normal)
startVisitButton.titleLabel?.numberOfLines = 0
startVisitButton.titleLabel?.lineBreakMode = NSLineBreakMode.ByWordWrapping

And result will be: