Multiline UIButton and autolayout

Question

I have created a view controller that looks like this:

I want the two

Answer 1

Complete class in Swift 3 - based on @Jan, @Quantaliinuxite and @matt bezark:

@IBDesignable
class MultiLineButton:UIButton {

    //MARK: -
    //MARK: Setup
    func setup () {
        self.titleLabel?.numberOfLines = 0

        //The next two lines are essential in making sure autolayout sizes us correctly
        self.setContentHuggingPriority(UILayoutPriorityDefaultLow+1, for: .vertical)
        self.setContentHuggingPriority(UILayoutPriorityDefaultLow+1, for: .horizontal)
    }

    //MARK:-
    //MARK: Method overrides
    required init?(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
        setup()
    }

    override init(frame: CGRect) {
        super.init(frame: frame)
        setup()
    }

    override var intrinsicContentSize: CGSize {
        return self.titleLabel!.intrinsicContentSize
    }

    override func layoutSubviews() {
        super.layoutSubviews()
        titleLabel?.preferredMaxLayoutWidth = self.titleLabel!.frame.size.width
    }
}