same problem in beta 4

I was playing around more this morning The solution was very simple I don't know how I did not think of it. #Preview { NavigationControllerView { ContentView() } .ignoresSafeArea() // <--- here }

When I am using a UIKit based app lifecycle with app and scene delegates with the following code 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) let navigationController = NavigationController() let initialView = ContentView() .environment(navigationController) .viewController navigationController.viewControllers = [initialView] window?.rootViewController = navigationController window?.makeKeyAndVisible() } It appears to be working well. struct ContentView: View { var body: some View { ZStack { Color.purple .ignoresSafeArea(.all) } .toolbar { Button("Toolbar Button") { } .buttonStyle(.plain) } } } I am wondering what am I missing when I am trying to achieve this using a SwiftUI based app lifecycle.

Hello, I have made attempts, but unfortunately there were not fruitful. The setup is as follows, note that I went overboard with the toolbar modifiers just to be sure. import SwiftData import SwiftUI @main struct NewNavigationApp: App { var body: some Scene { WindowGroup { NavigationControllerView { ContentView() } } } } @Observable final class NavigationController: UINavigationController { func pushView<Content: View>(_ view: @escaping () -> Content) { let content = view() .environment(self) let controller = UIHostingController(rootView: content) pushViewController(controller, animated: true) } } struct NavigationControllerView<RootView: View>: UIViewControllerRepresentable { @State private var navigationController = NavigationController() private let rootView: () -> RootView init(rootView: @escaping () -> RootView) { self.rootView = rootView } func makeUIViewController(context: Context) -> NavigationController { let view = rootView() .environment(navigationController) navigationController.viewControllers = [ UIHostingController(rootView: view) ] return navigationController } func updateUIViewController(_ uiViewController: NavigationController, context: Context) { } typealias UIViewControllerType = NavigationController } ContentView.swift import SwiftUI struct ContentView: View { var body: some View { ZStack { Color.blue .ignoresSafeArea(.all) .toolbarBackground(.purple, for: .navigationBar) .toolbarColorScheme(.dark, for: .navigationBar) } .toolbarBackground(.purple, for: .navigationBar) .toolbarColorScheme(.dark, for: .navigationBar) } } #Preview { NavigationControllerView { ContentView() .toolbarBackground(.purple, for: .navigationBar) .toolbarColorScheme(.dark, for: .navigationBar) } .toolbarBackground(.purple, for: .navigationBar) .toolbarColorScheme(.dark, for: .navigationBar) } However, the result was the same. Next, I updated my info.plist though that did not change anything. Afterwards, I attempted to create my own custom ViewController. final class SwiftUIViewController<Content: View>: UIHostingController<Content> { override var preferredStatusBarStyle: UIStatusBarStyle { .darkContent } override init(rootView: Content) { super.init(rootView: rootView) view.backgroundColor = .purple } @MainActor @preconcurrency required dynamic init?(coder aDecoder: NSCoder) { fatalError("init(coder:) has not been implemented") } } and I have made the following modification inside struct NavigationControllerView<RootView: View>: UIViewControllerRepresentable func makeUIViewController(context: Context) -> NavigationController { let view = rootView() .environment(navigationController) navigationController.viewControllers = [ SwiftUIViewController(rootView: view) ] return navigationController } so far, nothing has worked. I am aware this is an unorthodox way of using SwiftUI, I was playing around to see if I can use a SwiftUI App Lifecycle with Imperative navigation like navigation controllers, and adding the navigator to the view environment.

I wrote an extension to the View to convert it to BiewController extension View { public var viewController: UIViewController { UIHostingController(rootView: self) } } the following is my JDNavigastionController @Observable public final class JDNavigationController: UINavigationController { public func pushView<V: View>( _ view: @autoclosure () -> V, animated: Bool = true ) { self.pushViewController( view() .environment(self) .viewController, animated: animated ) } public func presentView<V: View>( _ view: @autoclosure () -> V, animated: Bool = true, completion: (() -> Void)? = nil ) { self.present( view() .environment(self) .viewController, animated: animated, completion: completion ) } public func alert( title: String? = nil, messsage: String? = nil, actions: [UIAlertAction] = [], animated: Bool = true, completion: (() -> Void)? = nil, preferredStyle: UIAlertController.Style = .alert ) { let alertController = UIAlertController(title: title, message: messsage, preferredStyle: preferredStyle) actions.forEach { alertController.addAction($0) } self.present(alertController, animated: animated, completion: completion) } }

I suppose i am looking something similar to this but for swift data https://developer.apple.com/documentation/coredata/nsmanagedobjectcontext/1506224-refresh

really appreciate the help

Hello thank you for the reply. I basically put a breakpoint inside viewdidload and checked the values. here's a basic yet completed code. class ViewController: UIViewController {   override func viewDidLoad() {     super.viewDidLoad()     view.backgroundColor = .cyan     let randomStr = "dracarys"     sleep(3)     let nextController = TabBarViewController()     nextController.str = randomStr     navigationController?.pushViewController(nextController, animated: true)   } } class TabBarViewController : UITabBarController {       var str: String?       override func viewDidLoad() {     super.viewDidLoad()     debugPrint(str ?? "value is nil")     let one = view1()     one.str = self.str     self.viewControllers = [one, view2()]   } } class view1 : UIViewController {       var str: String?       override func viewDidLoad() {     super.viewDidLoad()     debugPrint(str ?? "value is nil")     view.backgroundColor = .red   } } class view2 : UIViewController {   override func viewDidLoad() {     super.viewDidLoad()     view.backgroundColor = .orange   } } it always prints "value is nil"