import UIKit@UIApplicationMainclass AppDelegate: UIResponder, UIApplicationDelegate {    var window: UIWindow?    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {        self.window = UIWindow(frame:UIScreen.main.bounds)                self.window?.backgroundColor = #colorLiteral(red: 0.4745098054, green: 0.8392156959, blue: 0.9764705896, alpha: 1)                self.window?.makeKeyAndVisible()                self.window?.rootViewController = UIViewController()                let aImageView = UIImageView(frame:CGRect(x: 150, y: 40, width: 100, height: 100))        aImageView.image = UIImage(named:"aaa")        aImageView.layer.masksToBounds = true        aImageView.layer.cornerRadius = 50        self.window?.addSubview(aImageView)                let lable1 = UILabel(frame:CGRect(x: 20, y: 200, width: 80, height: 40))        lable1.backgroundColor = #colorLiteral(red: 0.5568627715, green: 0.3529411852, blue: 0.9686274529, alpha: 1)        let lable2 = UILabel(frame:CGRect(x: 20, y: 260, width: 80, height: 40))        lable2.backgroundColor = #colorLiteral(red: 0.5568627715, green: 0.3529411852, blue: 0.9686274529, alpha: 1)                lable1.text = "账号"        lable1.textColor = #colorLiteral(red: 0.721568644, green: 0.8862745166, blue: 0.5921568871, alpha: 1)        lable1.textAlignment = .center        lable1.layer.masksToBounds = true        lable1.layer.cornerRadius = 5        lable2.text = "密码"        lable2.textColor = #colorLiteral(red: 0.721568644, green: 0.8862745166, blue: 0.5921568871, alpha: 1)        lable2.textAlignment = .center        lable2.layer.masksToBounds = true        lable2.layer.cornerRadius = 5        self.window?.addSubview(lable1)        self.window?.addSubview(lable2)                let textField1 = UITextField(frame:CGRect(x: 160, y: 200, width: 200, height: 40))        textField1.backgroundColor = #colorLiteral(red: 0.9568627477, green: 0.6588235497, blue: 0.5450980663, alpha: 1)        textField1.borderStyle = .roundedRect        textField1.text = "输入的内容"        textField1.placeholder = "请输入用户名"        textField1.clearsOnBeginEditing = true                let textField2 = UITextField(frame:CGRect(x: 160, y: 260, width: 200, height: 40))        textField2.backgroundColor = #colorLiteral(red: 0.9568627477, green: 0.6588235497, blue: 0.5450980663, alpha: 1)        textField2.borderStyle = .roundedRect        textField2.text = "输入的内容"        textField2.placeholder = "请输入密码"        textField2.clearsOnBeginEditing = true        self.window?.addSubview(textField1)        self.window?.addSubview(textField2)                let button1 = UIButton(type:.custom)        button1.frame = CGRect(x: 20, y: 330, width: 100, height: 40)        button1.backgroundColor = UIColor.gray        button1.setTitle("登录", for: .normal)        button1.layer.masksToBounds = true        button1.layer.cornerRadius = 5        let button2 = UIButton(type:.custom)        button2.frame = CGRect(x: 280, y: 330, width: 100, height: 40)        button2.backgroundColor = UIColor.gray        button2.setTitle("注册", for: .normal)        button2.layer.masksToBounds = true        button2.layer.cornerRadius = 5        self.window?.addSubview(button1)        self.window?.addSubview(button2)                return true    }    override func touchesBegan(_ touches: Set, with event: UIEvent?) {

let textField1 = self.window?.viewWithTag(200)

textField1?.resignFirstResponder()

let textField2 = self.window?.viewWithTag(200)

textField2?.resignFirstResponder()

}

}