MarlonButtonExample.swift

//: A UIKit based Playground for presenting user interface
  
import UIKit
import PlaygroundSupport

class MyViewController : UIViewController {
    
    var button: UIButton?
    
    override func loadView() {
        let view = UIView()
        view.backgroundColor = .white
        
        let button = UIButton()
        button.frame = CGRect(x: 150, y: 200, width: 200, height: 20)
        button.setTitle("Hello, World!", for: .normal)
        button.setTitleColor(.blue, for: .normal)
        button.setTitleColor(.red, for: .highlighted)
        button.layer.borderColor = UIColor.systemGreen.cgColor
        button.layer.borderWidth = 1.5
        button.addTarget(self, action: #selector(buttonTouchDown), for: .touchDown)
        
        button.addTarget(self, action: #selector(buttonTouchUpInside), for: .touchUpInside)
        
        self.button = button
        
        view.addSubview(button)
        self.view = view
    }
    
    @objc func buttonTouchDown() {
        
        self.button?.layer.borderColor = UIColor.systemRed.cgColor
        
    }
    
    @objc func buttonTouchUpInside() {
        
        self.button?.layer.borderColor = UIColor.systemGreen.cgColor
        
    }
    
}


// Present the view controller in the Live View window
PlaygroundPage.current.liveView = MyViewController()