swfit demo1

let screenW = UIScreen.main.bounds.size.width
let screenH = UIScreen.main.bounds.size.height

fileprivate let timeInterval = 0.1
class ViewController: UIViewController {

override func viewDidLoad() {
    super.viewDidLoad()
   
self.setupUI()
    
}

func setupUI() {
 self.view.addSubview(self.playBtn)
}


lazy var playBtn: UIButton = {
    let playBtn = UIButton(frame: CGRect(x: screenW*0.5, y: screenH*0.5, width: screenW*0.5, height: screenH*0.5))
    playBtn.backgroundColor = UIColor(red: 66/255.0, green: 75/255.0, blue: 226/255.0, alpha: 1.0)
    playBtn .setImage(UIImage(named: "play"), for: .normal)
    playBtn.addTarget(self, action: #selector(playBtnClick), for: .touchUpInside)
    
    return playBtn
}()


@objc func playBtnClick()  {

}