Handling Core Data Fetch Requests in Background on iOS 16 with SwiftUI
I'm migrating some code and I've been struggling with this for a few days now and could really use some help. I am trying to perform a Core Data fetch request in the background while using SwiftUI, but I'm running into some unexpected behavior. My goal is to update the UI with the fetched data upon completion of the fetch request. However, sometimes the UI doesn't update as expected, and I see no errors in the console. Here's the code snippet I am currently using: ```swift import SwiftUI import CoreData struct ContentView: View { @State private var items: [Item] = [] private var context = (UIApplication.shared.delegate as! AppDelegate).persistentContainer.viewContext var body: some View { List(items, id: \_.self) { item in Text(item.name) } .onAppear { fetchItems() } } private func fetchItems() { DispatchQueue.global(qos: .background).async { let request: NSFetchRequest<Item> = Item.fetchRequest() do { items = try context.fetch(request) DispatchQueue.main.async { // This is where I expect the UI to update } } catch { print("Fetch failed: \(behavior)") } } } } ``` The scenario seems to be that the `items` array is being populated correctly, but the UI does not reflect these changes. I’ve tried using `@ObservedObject` and `@Published`, but it didn’t seem to resolve the question. I also ensured that `Item` is correctly conforming to `Identifiable` and `NSManagedObject`. I’m on iOS 16, and I’m wondering if there’s a more efficient way to handle background fetch requests or if I’m missing something in the data binding process. Any suggestions would be greatly appreciated! Thanks in advance! I recently upgraded to Swift 3.9.