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SOLVED: Is the code in Finishing touches: didFinishLaunchingWithOptions (Day 34, Task 2) out of date?

Forums > 100 Days of Swift
@Legion  

The tutorial asks you to add some code to the didFinishLaunchingWithOptions function in AppDelegate.swift. Unfortunately the code doesn't work as there is no window variable.

if let tabBarController = window?.rootViewController as? UITabBarController { //error: Cannot find 'window' in scope

Is it as simple as declaring var window: UIWindow? as a member variable to the AppDelegate class?

3      

@Legion  

Adding the member variable to AppDelegate does not work, although it does compile. No new tab is displayed in the UI.

3      

@ygeras  

Hi there! Yes, structure has been changed since then. Now it is in SceneDelegate.swift

class SceneDelegate: UIResponder, UIWindowSceneDelegate {

  var window: UIWindow?

  func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {

    if let tabBarController1 = window?.rootViewController as? UITabBarController {
      let storyboard = UIStoryboard(name: "Main", bundle: nil)
      let vc = storyboard.instantiateViewController(withIdentifier: "NavController")
      vc.tabBarItem = UITabBarItem(tabBarSystemItem: .topRated, tag: 1)
      tabBarController1.viewControllers?.append(vc)
    }

    // This creates second tab bar item
//    if let tabBarController2 = window?.rootViewController as? UITabBarController {
//      let storyboard = UIStoryboard(name: "Main", bundle: nil)
//      let vc = storyboard.instantiateViewController(withIdentifier: "NavController")
//      vc.tabBarItem = UITabBarItem(tabBarSystemItem: .mostViewed, tag: 2)
//      tabBarController2.viewControllers?.append(vc)
//    }

    guard let _ = (scene as? UIWindowScene) else { return }
  }
 }

3      

@Legion  

Thanks for clearing that up. Can the tutorial be updated for future students?

3      

@ygeras  

Well this is good question for Paul :) But since all attention now on SwiftUI framework, I wouldn't be so sure that it is going to be updated soon. But nevertheless his course is not so really oudated as others. There are some other places that unfortunately will make your brain hurt :) But nevertheless solvable.

3      

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