import UIKit

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {

    var window: UIWindow?


    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
        
        let navigationController = UINavigationController(rootViewController: Controller())
        self.launch(rootViewController: navigationController)
        
        return true
    }

    func launch(rootViewController: UIViewController) {
        let frame = UIScreen.main.bounds
        self.window = UIWindow(frame: frame)
        self.window!.rootViewController = rootViewController
        self.window!.makeKeyAndVisible()
    }

}