Multiline UIButton and autolayout

Question

I have created a view controller that looks like this:

I want the two

Answer 1

//Swift 4 - Create Dynamic Button MultiLine Dynamic

class ViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()

         /// Add DemoButton 1
        let demoButton1 = buildButton("Demo 1")
        //demoButton1.addTarget(self, action: #selector(ViewController.onDemo1Tapped), for: .touchUpInside)
        view.addSubview(demoButton1)

        view.addConstraint(NSLayoutConstraint(item: demoButton1, attribute: .centerX, relatedBy: .equal, toItem: view, attribute: .centerX, multiplier: 1, constant: 0))
        view.addConstraint(NSLayoutConstraint(item: demoButton1, attribute: .centerY, relatedBy: .equal, toItem: view, attribute: .centerY, multiplier: 1, constant: -180))

    }

    func buildButton(_ title: String) -> UIButton {
        let button = UIButton(type: .system)
        button.backgroundColor = UIColor(red: 80/255, green: 70/255, blue: 66/255, alpha: 1.0)

        //--------------------------
        //to make the button multiline
        //button.titleLabel!.lineBreakMode = .byWordWrapping
        button.titleLabel?.textAlignment = .center
        button.titleLabel?.numberOfLines = 0
        //button.titleLabel?.adjustsFontSizeToFitWidth = true
        //button.sizeToFit()
        button.titleLabel?.preferredMaxLayoutWidth = self.view.bounds.width//200
        button.layer.borderWidth = 2
        let height = NSLayoutConstraint(item: button,
                                        attribute: .height,
                                        relatedBy: .equal,
                                        toItem: button.titleLabel,
                                        attribute: .height,
                                        multiplier: 1,
                                        constant: 0)
        button.addConstraint(height)
        //--------------------------

        button.setTitle(title, for: UIControlState())
        button.layer.cornerRadius = 4.0
        button.setTitleColor(UIColor(red: 233/255, green: 205/255, blue: 193/255, alpha: 1.0), for: UIControlState())
        button.translatesAutoresizingMaskIntoConstraints = false
        return button
    }
}