NSPersistentCloudKitContainer

I'm using Core Data and CloudKit together, and so far everything looks great. But one thing that I haven't been able to find much literature on is the interaction between NSPersistentCloudKitContainer and Persistent History Tracking. My assumption is that NSPersistentCloudKitContainer leans on Persistent History Tracking to execute its responsibilities. So if we're using Persistent History Tracking elsewhere – maybe to update an app extension using a process similar to the one outlined at https://www.avanderlee.com/swift/persistent-history-tracking-core-data/ – there's a risk of interrupting that process. Especially with regards to executing a NSPersistentHistoryChangeRequest.deleteHistory(before:) request. Would this run the risk of deleting history that NSPersistentCloudKitContainer requires to perform its roles? Is there a way to synchronise these various responsibilities?

Hello I am making a To-Do list app where I use CoreData and CloudKit, the problem is that when I added this line of code container.persistentStoreDescriptions = [NSPersistentStoreDescription(url: fileContainer.appendingPathComponent(MJ.sqlite))] to the PersistenceController, iCloud syncing stopped working. (I need that line of code in order to permit to extensions to access the CoreData database) Any idea to solve the problem? This is all the PersistenceController code struct PersistenceController { static let shared = PersistenceController() let container: NSPersistentCloudKitContainer init(inMemory: Bool = false) { container = NSPersistentCloudKitContainer(name: MJ) guard let fileContainer = FileManager.default.containerURL(forSecurityApplicationGroupIdentifier: group.name) else { fatalError(Shared file container could not be created.) } container.persistentStoreDescriptions = [NSPersistentStoreDescription(url: fileContainer.appendingPathComponent(MJ.sqlite))] container.loadPersistentStore

Am I wrong or is it not possible to share Core Data+CloudKit with a keyboard extension? It works if I set an app group but then I lose the CloudKit sync feature, which is not acceptable for me. Is there some other way to share the data while keeping sync?

I’m working on an app that uses the new sharing support in NSPersistentCloudKitContainer. I do not see a way to tell Core Data that an object, or set of objects, is no longer shared. For example, if I create a set of objects and then call share(_:to:completion:), the objects are shared properly and moved to a new, custom CKRecordZone, as expected. Now, if the user stops sharing an object using UICloudSharingController, the CKShare that Core Data created is properly deleted from CloudKit, but the objects are still in the custom zone, and Core Data still has the original CKShare associated with those objects. So, when I call fetchShares(matching:), I still get the CKShare, but of course, that is no longer valid. Forcing Core Data to fetch CloudKit changes by either moving the app to background and then foreground, or by stopping the app and relaunching does not cause Core Data to notice the change to the share. Does anyone know how to tell Core Data that these objects are no longer shared? Note, I’ve t

Hi, I’m trying to migrate Core Data with CloudKit to the shared App Group Container so that widgets can get access to it. So far, I’ve managed to do so with the following code: init() { container = NSPersistentCloudKitContainer(name: “AppName”) let storeDescription = container.persistentStoreDescriptions.first! // Clean up code goes here (explained later) // ... let sharedGroupStoreURL = FileManager.default.containerURL(forSecurityApplicationGroupIdentifier: group.com.XXX)!.appendingPathComponent(AppName.sqlite) storeDescription.url = sharedGroupStoreURL container.loadPersistentStores { (storeDescription, error) in if let error = error as NSError? { print(Unresolved error (error), (error.userInfo)) } } container.viewContext.mergePolicy = NSMergeByPropertyObjectTrumpMergePolicy container.viewContext.automaticallyMergesChangesFromParent = true } This tells Core Data to use the shared container. When the new persistentStore loads, it gets seamlessly populated with the data from CloudKit. So far, so good

I have been spending the last several weeks implementing NSPersistentCloudKitContainer in my app, and it is most of the way there. Unfortunately, I keep running into an issue where after several days of successful syncing between devices, each device begins to crash after about a minute of use, repeatedly. The crash report points to a SQL thread doing things with the CoreData and CloudKit frameworks — none of my code whatsoever. It is the typical “CPU: 48 seconds cpu time over 58 seconds (82% cpu average), exceeding limit of 80% cpu over 60 seconds” issue. If I run the devices hooked up to Xcode and debug, I see the thread spin up and the log shows it chugging through changed CKRecords it needs to import, just like normal. If I leave the devices hooked up to Xcode, they eventually make it through this huge job and the devices become usable again. Once one device is in this state, the problem also occurs on new devices trying to download from the cloud for the first time. I’ve attached a screenshot of

Using NSPersistentCloudKitContainer, how do I add (or modify) the NSManageObjects that are part of a Share/Zone? I have initially created a CKShare using NSPersistentCloudKitContainer.share(_:to:completion:), how can I add objects to that share later on? Calling the method again (with to:existingShare filed), always seems to create a new Share. In fact, I don't understand what the to: parameter is for? It doesn't matter if I set it or not, a new CKShare is always created.

Hello Is there a way to share data stored in CloudKit and CoreData between iOS and watchOS in SwiftUI? I am using the same CoreData file both, and I am using the same PersistenceController file both, and I am using the same CloudKit container for both. I tried adding the App Groups capability to all the targets, but it is not working. (I already enabled iCloud capability, Push notification capability and background Modes capability for both iOS and WatchOS) PersistenceController: struct PersistenceController { static let shared = PersistenceController() static var preview: PersistenceController = { let result = PersistenceController(inMemory: true) let viewContext = result.container.viewContext do { try viewContext.save() } catch { let nsError = error as NSError fatalError(Unresolved error (nsError), (nsError.userInfo)) } return result }() let container: NSPersistentCloudKitContainer init(inMemory: Bool = false) { container = NSPersistentCloudKitContainer(name: Test7) if inMemory { container