👀 Views: 25 💬 Answers: 1 📅 Created: 2025-07-06

swiftui environmentobject observableobject ios17 Swift

I've spent hours debugging this and I'm upgrading from an older version and I'm relatively new to this, so bear with me. I'm working on a SwiftUI application where I'm using an `EnvironmentObject` to manage shared state across multiple views. I've set up my `ObservableObject` correctly, and I'm expecting it to propagate changes to all views that depend on it. However, in some specific cases, the views do not seem to re-render when the object updates. Here is the relevant part of my code: ```swift class UserSettings: ObservableObject { @Published var username: String = "" } struct ContentView: View { @EnvironmentObject var settings: UserSettings var body: some View { VStack { TextField("Username", text: $settings.username) Text("Hello, \(settings.username)") } .padding() } } struct AnotherView: View { @EnvironmentObject var settings: UserSettings var body: some View { Button("Update Username") { settings.username = "New Username" } } } @main struct MyApp: App { var body: some Scene { WindowGroup { ContentView() .environmentObject(UserSettings()) } } } ``` When I tap the button in `AnotherView`, the `username` updates in the `UserSettings`, but the `ContentView` does not reflect the change unless I restart the app. I've checked that the `UserSettings` is correctly set in the environment, and the `@Published` property seems to be notifying observers. I've tried moving the `EnvironmentObject` initialization around and ensuring that both views are in the same view hierarchy, but nothing seems to help. This behavior only occurs on iOS 17 and not on previous versions. Is there something specific to iOS 17 or SwiftUI's lifecycle that I might be missing? Any insights would be greatly appreciated! Any ideas what could be causing this? I'm working with Swift in a Docker container on Ubuntu 20.04. What's the correct way to implement this? This is happening in both development and production on CentOS.