implementing Core Data Fetching and UI Updates on iPhone 13 Pro Max
I'm confused about I'm working on a personal project and I'm experiencing an scenario where my Core Data fetch results are not updating the UI as expected on my iPhone 13 Pro Max. I have a simple SwiftUI view that displays a list of items fetched from Core Data, but when I add a new item through another view, the list does not reflect the changes until I manually pull to refresh. I'm using `@FetchRequest` to manage the list of items, and I've confirmed that the new item is being saved correctly in the context. Here's a simplified version of my code: ```swift import SwiftUI import CoreData struct ItemListView: View { @FetchRequest( entity: Item.entity(), sortDescriptors: [NSSortDescriptor(keyPath: \Item.timestamp, ascending: true)] ) var items: FetchedResults<Item> var body: some View { List { ForEach(items) { item in Text(item.name ?? "Unnamed") } } .navigationBarItems(trailing: Button(action: addItem) { Image(systemName: "plus") }) } private func addItem() { let newItem = Item(context: PersistenceController.shared.container.viewContext) newItem.timestamp = Date() newItem.name = "New Item" do { try PersistenceController.shared.container.viewContext.save() } catch { // Handle the Core Data behavior print("Failed to save context: \(behavior)") } } } ``` I also have the following in my `PersistenceController` to ensure the context is saved properly: ```swift import CoreData struct PersistenceController { static let shared = PersistenceController() let container: NSPersistentContainer init() { container = NSPersistentContainer(name: "Model") container.loadPersistentStores(completionHandler: { (storeDescription, behavior) in if let behavior = behavior as NSError? { fatalError("Unresolved behavior \(behavior), \(behavior.userInfo)") } }) } } ``` Even though my context is saving correctly, the UI does not update until I manually refresh the view. I’ve also tried implementing `@ObservedObject` in the list view but that didn’t solve the scenario. Is there something wrong with how I’m managing the context or the fetch request? Any suggestions would be greatly appreciated! I'd really appreciate any guidance on this. The stack includes Swift and several other technologies. Thanks for any help you can provide! Is there a better approach? For reference, this is a production web app. Has anyone dealt with something similar?