gistfile1.swift

class ViewController: UIViewController {
    var loadings = UIView()
    var loadingView:LoadingView?
    var imageUrls:[URL?] = []
    
    override func viewDidLoad() {
        super.viewDidLoad()
        loadingsSetting()
        startButtonSetting()
        imageUrls.append(Bundle.main.url(forResource: "emoticon", withExtension: "png"))
        imageUrls.append(Bundle.main.url(forResource: "ac", withExtension: "png"))
        imageUrls.append(Bundle.main.url(forResource: "emoji", withExtension: "png"))
        imageUrls.append(Bundle.main.url(forResource: "mail", withExtension: "png"))
        imageUrls.append(Bundle.main.url(forResource: "adb", withExtension: "png"))
    }
    
    func loadingsSetting() {
        self.view.addSubview(loadings)
        loadings.frame = CGRect(x: 0, y: 0, width: 200, height: 200)
        
        let safe = self.view.safeAreaLayoutGuide
        loadings.snp.makeConstraints { (make) in
            make.leading.trailing.equalTo(safe)
            make.centerY.equalTo(self.view)
            make.height.equalTo(200)
        }
        
        loadings.backgroundColor = .red
        
        self.loadingView = LoadingView(frame: self.loadings.bounds)
        self.loadingView?.backgroundColor = UIColor.init(displayP3Red: 0.5, green: 0.5, blue: 0.5, alpha: 0.5)
        self.loadings.addSubview(loadingView!)
        loadingView?.snp.makeConstraints({ (make) in
            make.top.leading.equalToSuperview().offset(10)
            make.bottom.trailing.equalToSuperview().offset(-10)
        })
    }
    
    func startButtonSetting() {
        let button = UIButton()
        self.view.addSubview(button)
        button.frame = CGRect(x: 0, y: 0, width: 50, height: 50)
        
        button.snp.makeConstraints { (make) in
            make.top.equalTo(self.view.safeAreaLayoutGuide).offset(10)
            make.leading.equalToSuperview().offset(10)
            make.trailing.equalToSuperview().offset(-10)
            make.height.equalTo(40)
        }
        
        button.backgroundColor = .clear
        button.layer.borderWidth = 1
        button.layer.borderColor = UIColor.black.cgColor
        button.layer.cornerRadius = 10
        
        button.setTitle("Start", for: .normal)
        button.setTitleColor(.black, for: .normal)
        button.titleLabel?.font = UIFont.systemFont(ofSize: 20)
        
        button.addTarget(self, action: #selector(touchUpStartButtonAction), for: .touchUpInside)
        
    }
}