👀 Views: 59 💬 Answers: 1 📅 Created: 2025-07-11

swift swiftui macos

Can someone help me understand After trying multiple solutions online, I still can't figure this out... I'm performance testing and I'm experiencing an scenario with my SwiftUI view not updating correctly when the underlying model changes. I have an `ObservableObject` that handles a list of items, and I'm using a `List` to display them. When I add an item to the list, the view does not refresh unless I manually trigger a UI update. My code snippet looks like this: ```swift import SwiftUI class ItemList: ObservableObject { @Published var items: [String] = [] func addItem(_ item: String) { items.append(item) } } struct ContentView: View { @ObservedObject var itemList = ItemList() var body: some View { VStack { List(itemList.items, id: \ .self) { item in Text(item) } Button("Add Item") { itemList.addItem("New Item") } } } } ``` Even though I'm using `@Published` for the `items` property, it seems that the `List` is not reflecting changes made to the `items` array. I tried adding `print()` statements inside the `addItem` function to confirm items are being appended correctly, and they are, but the UI just doesn’t update. I'm testing this on macOS 13.6. Is there a specific requirement or a common pitfall I might be missing that would prevent the view from updating? I've also considered ensuring that the `@ObservedObject` is properly instantiated and passed, but I need to identify the scenario. Any insights would be appreciated! I'm on Windows 11 using the latest version of Swift. Thanks for your help in advance! Thanks, I really appreciate it!