SwiftUI NavigationView not preserving state when using onAppear on iOS 16.2
I've been banging my head against this for hours. I'm working with a question with `NavigationView` in SwiftUI where the state of my view does not seem to continue correctly when navigating back and forth. I have a list of items that the user can tap to go to a detail view. In the detail view, I am using `onAppear` to load some data asynchronously. Here's a simplified version of my code: ```swift struct ContentView: View { var items = ["Item 1", "Item 2", "Item 3"] var body: some View { NavigationView { List(items, id: \.self) { item in NavigationLink(destination: DetailView(item: item)) { Text(item) } } } } } struct DetailView: View { var item: String @State private var data: String = "" var body: some View { Text(data) .onAppear { loadData() } } func loadData() { // Simulate async loading DispatchQueue.main.asyncAfter(deadline: .now() + 1) { self.data = "Loaded data for \(item)" } } } ``` The scenario arises when I navigate back to the `ContentView` and then return to `DetailView`. The `onAppear` is triggered again, and it seems to reload the data, but the `data` variable is reset to its initial state instead of maintaining the previous state. I expected the loaded data to continue since it's in the `DetailView`, but it appears to be re-initialized every time I return to that view. I've tried using the `@StateObject` for data management and also looked into using `EnvironmentObject`, but neither seems to solve the question. Additionally, using `@ObservedObject` has not yielded the desired results either. Iām not sure if this is an expected behavior in iOS 16.2 or if Iām missing something crucial in the state management. Has anyone else encountered this scenario? Any suggestions on how to properly maintain the state of `DetailView` when navigating back and forth? For context: I'm using Swift on Ubuntu. What am I doing wrong?