class ViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
let demoButton1 = buildButton("Demo 1")
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)
button.titleLabel?.textAlignment = .center
button.titleLabel?.numberOfLines = 0
button.titleLabel?.preferredMaxLayoutWidth = self.view.bounds.width
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
}
}