从 .xcodeproj 切换到 .xcworkspace 后无法实例化默认视图控制器

Question

When I create a brand new project in Xcode and choose Storyboard for the interface, I can run the app on my phone just fine.

However, when I do pod install (the only deps I added are pod 'Plaid' ) and then switch over to the .xcworkspace file, I get this error:

[WindowScene] Failed to instantiate the default view controller for UIMainStoryboardFile 'Main' - perhaps the designated entry point is not set?

I have tried the usual fixes (check Is Initial View Controller etc.)

Appreciate any help, thanks.

Answer 1

You must assign entry point to your project, go to your sceneDelegate file and set it like this:

func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {
    // Use this method to optionally configure and attach the UIWindow `window` to the provided UIWindowScene `scene`.
    // If using a storyboard, the `window` property will automatically be initialized and attached to the scene.
    // This delegate does not imply the connecting scene or session are new (see `application:configurationForConnectingSceneSession` instead).

    guard let windowScene = (scene as? UIWindowScene) else { return }
    
    window = UIWindow(windowScene: windowScene)
    window?.backgroundColor = .white // or the color that you prefer
    window?.makeKeyAndVisible()
    let controller = ViewController() // or the first controller presented in your app
    window?.rootViewController = controller
}