SwiftUI - Using @main to set the rootViewController

Question

When using the SceneDelegate in SwiftUI, it was possible to create a function like the one below that could be used to set the view as shown here. However, in the latest version we now use a WindowsGroup. Is it possible to write a function that changes the view in the WindowsGroup?

func toContentView() {
   let contentView = ContentView()
      window?.rootViewController = UIHostingController(rootView: contentView)
}

Does this answer your question https://stackoverflow.com/a/63276688/12299030? — Asperi, Sep 29 '20 at 15:30
I think it might get the job done, thank you, but I'm really hoping that I can figure this one out in a way that's similar to the example. — squarehippo10, Sep 30 '20 at 00:26

score 3 · Accepted Answer · edited Aug 23 '22 at 14:42

Here is possible alternate approach that do actually the same as your old toContentView

helper class

class Resetter: ObservableObject {
    static let shared = Resetter()

    @Published private(set) var contentID = UUID()

    func toContentView() {
        contentID = UUID()
    }
}

content of @main

    @StateObject var resetter = Resetter.shared
    var body: some Scene {
        WindowGroup {
            ContentView()
               .id(resetter.contentID)
        }
    }

now from anywhere in code to reset to ContentView you can just call

Resetter.shared.toContentView()

SwiftUI - Using @main to set the rootViewController

1 Answers1