This is a sample code to switch RootViewController with animation.
It's supposed to be used after the tutorial and so on.
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| import UIKit | |
| @UIApplicationMain | |
| class AppDelegate: UIResponder, UIApplicationDelegate { | |
| var window: UIWindow? | |
| func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool { | |
| self.window = UIWindow(frame: UIScreen.main.bounds) | |
| self.window!.makeKeyAndVisible() | |
| window!.rootViewController = FirstViewController_20190130() | |
| return true | |
| } | |
| func switchViewController(viewController: UIViewController) { | |
| UIView.transition(with: self.window!, duration: 0.5, options: .transitionCrossDissolve, animations: { | |
| let oldState: Bool = UIView.areAnimationsEnabled | |
| UIView.setAnimationsEnabled(false) | |
| self.window?.rootViewController = viewController | |
| UIView.setAnimationsEnabled(oldState) | |
| }, completion: nil) | |
| } | |
| func applicationWillResignActive(_ application: UIApplication) { | |
| } | |
| func applicationDidEnterBackground(_ application: UIApplication) { | |
| } | |
| func applicationWillEnterForeground(_ application: UIApplication) { | |
| } | |
| func applicationDidBecomeActive(_ application: UIApplication) { | |
| } | |
| func applicationWillTerminate(_ application: UIApplication) { | |
| } | |
| } | |
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| import UIKit | |
| class FirstViewController_20190130: UIViewController { | |
| override func viewDidLoad() { | |
| super.viewDidLoad() | |
| view.backgroundColor = .orange | |
| let button = UIButton() | |
| button.frame.size = CGSize(width: 200, height: 100) | |
| button.center = view.center | |
| print(button.frame) | |
| button.backgroundColor = .lightGray | |
| button.setTitle("Switch To Second", for: .normal) | |
| button.addTarget(self, action: #selector(switchToSecond(sender:)), for:.touchUpInside) | |
| view.addSubview(button) | |
| } | |
| @objc func switchToSecond(sender: UIButton) { | |
| let appDelegate = UIApplication.shared.delegate as! AppDelegate | |
| appDelegate.switchViewController(viewController: SecondViewController_20190130()) | |
| } | |
| } |
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| import UIKit | |
| class SecondViewController_20190130: UIViewController { | |
| override func viewDidLoad() { | |
| super.viewDidLoad() | |
| view.backgroundColor = .lightGray | |
| let button = UIButton() | |
| button.frame.size = CGSize(width: 200, height: 100) | |
| button.center = view.center | |
| button.backgroundColor = .orange | |
| button.setTitle("Switch To First", for: .normal) | |
| button.addTarget(self, action: #selector(switchToFirst(sender:)), for:.touchUpInside) | |
| view.addSubview(button) | |
| } | |
| @objc func switchToFirst(sender: UIButton) { | |
| let appDelegate = UIApplication.shared.delegate as! AppDelegate | |
| appDelegate.switchViewController(viewController: FirstViewController_20190130()) | |
| } | |
| } |