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I am building an iOS 26 SwiftUI app with Swift 6 strict concurrency using NSPersistentCloudKitContainer with a private and shared store for CloudKit zone-based sharing. The goal I want to share a Core ...
LevelOne2k's user avatar
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0 answers
80 views

I'm using NSPersistentCloudKitContainer and I have added an entity (to the private database) to the core data model. Now I have realised that I don't need that entity anymore and I want to get rid of ...
Peter Warbo's user avatar
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39 views

A user has accidentally deleted a root record that removes all data from the user. The data is stored in Cloudkit CoreData with Transaction History enabled. I have noticed in the CoreData database ...
user14341201's user avatar
  • 222
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1 answer
274 views

I wasn't sure how to phrase the question. I know it's misleading. Context: I'm using NSPersistentCloudKitContainer for my public and private database. The CoreData model has two configurations: Local, ...
Jonathan's user avatar
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3 votes
0 answers
159 views

Can someone please give me an overview of how sync works between Core Data and the public CloudKit database when using the NSPersistentCloudKitContainer and please point out my misunderstandings based ...
fs_tigre's user avatar
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2 votes
0 answers
196 views

I've set up a Notification listener which should fire when the CloudKit (NSPersistentCloudKitContainer) import is finished (so once), but the notification gets fired twice, sometimes thrice on one ...
Stan's user avatar
  • 167
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2 answers
322 views

I developed an app using CoreData and CloudKit. It gives some warning message in the console but works with no problem. However Apple rejected due to crash which I could not replicate. Really ...
baymak's user avatar
  • 109
1 vote
0 answers
128 views

I have one view which fetches data from a private database with following code to fetch all private items: @Environment(\.managedObjectContext) private var viewContext @FetchRequest( ...
someone's user avatar
  • 147
4 votes
1 answer
2k views

I am writing an app which is backed by CoreData with CloudKit integration. I have a few non-optional things in my model and provided default values for them (a few numbers which logically would ...
Harry Day's user avatar
  • 408
2 votes
1 answer
589 views

I'm having a hard time managing a shared core data object. I'm hoping that I'm doing something wrong and it's not just a bug in the cloudkit sharing but I also tried it with a sample app from apple ...
iVentis's user avatar
  • 1,193
4 votes
1 answer
1k views

Since my last question (here toggle between local and iCloud CoreData store) I was able to make a lot of progress. I am switching between NSPersistentCloudKitContainer and NSPersistenttContainer But......
luegm.dev's user avatar
  • 161
3 votes
0 answers
196 views

I'm using CoreData+CloudKit to store data, currently there are two Entities，AEntity and BEntity： In AEntity, there is an attribute: content, used to store NSAttributedString, its Type is "...
Lix's user avatar
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2 votes
1 answer
827 views

I have implemented sharing of items from my Core Data store, using the NSPersistentCloudKitContainer api, with limited success. The objects I share (a TripsLog) have child objects (Trip), which appear ...
SomaMan's user avatar
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1 answer
644 views

I'm using NSPersistentCloudKitContainer to sync CoreData+Cloudkit. I am basing my code on Apple's example in the code downloaded (see reference below). My Core Data root record is a hierarchy (list ...
DIV's user avatar
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1 vote
1 answer
457 views

Overview When I use NSPersistentCloudKitContainer I get the following error / debug messages printed on the Xcode Debug Area. I have logged into iCloud and I am testing on device Syncing seems to ...
user1046037's user avatar
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1 vote
2 answers
880 views

I created a blank SwiftUI project in XCode and selected to include Core Data and Cloud Kit. By default, Apple already included some Core Data sample code and entities in the project, and also a ...
Sanjo's user avatar
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1 vote
1 answer
625 views

I have 2 apps in the App Store, and each uses the private database in its own CloudKit container. (ie, App1 uses “iCloud.com.company.App1” and App2 uses “iCloud.com.company.App2”) I want to add a ...
Koa's user avatar
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2 votes
0 answers
115 views

When a user's CloudKit allocations is full, sync between their devices stops working. This is fairly common considering the 5GB default. Unfortunately detecting it on the app side isn't as ...
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648 views

Setup: I have a watch app that is not independent, but cooperates with the companion iOS app. Both use CoreData + CloudKit, and the size of the data stored in iCloud is very little (a few hundred ...
Reinhard Männer's user avatar
  • 15.5k
1 vote
0 answers
331 views

I have setup my CloudKit record types the same as my local structs and models in my code but can't seem to find a way to retrieve the list of references. For example, I have a UserData record type ...
Papi's user avatar
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1 answer
188 views

I use NSPersistentCloudKitContainer to sync with user iCloud the data, it works perfectly installing through Xcode on device but when install from TestFlight it doesn't work at all seems there is ...
Steven's user avatar
  • 780
3 votes
0 answers
322 views

Hi I am trying to get event notification from NSPersistentCloudKitContainer to get notification if data change or not? NSPersistentCloudKitContainer.eventChangedNotification but I didn't find any ...
Steven's user avatar
  • 780
4 votes
1 answer
406 views

My app uses CoreData + CloudKit mirroring to synchronize data e.g. on an iPhone and a watch. If data is modified on one device, the modification is uploaded to iCloud and later synchronized with other ...
Reinhard Männer's user avatar
  • 15.5k
5 votes
1 answer
1k views

I use NSPersistentCloudKitContainer to save objects in CoreData + CloudKit. I have integrated a sharing function that moves an object to a separate zone to share using UICloudSharingController, as ...
FrontFacingWindowCleaner's user avatar
  • 189
9 votes
1 answer
2k views

I'm building an application that makes use of NSPersistentCloudKitContainer. The app doesn't have sharing functionality and its only backend functionality is to use the cloudkit container to sync data ...
barndog's user avatar
  • 7,245
0 votes
1 answer
242 views

I use CoreData + NSPersistentCloudKitContainer to backup my model. One of my NSManagedObject has a picture stored as Binary Data and Allows external storage checked. It's very random but sometimes ...
hbdev's user avatar
  • 52
1 vote
2 answers
646 views

I had my app working with Core Data, then CloudKit to sync between devices and now I'd like to share data between users. I watched both Build apps that share data through CloudKit and Core Data and ...
Austin E's user avatar
  • 843
3 votes
1 answer
912 views

I currently have an application that uses Core Data with Apple's NSPersistentCloudKitContainer and I've a 2 users mentioning they lost their data when updating the app - I'm using Lightweight ...
Pedro Carrasco's user avatar
  • 158
2 votes
0 answers
322 views

I can't find any updated tutorials on CloudKit with CoreData + SwiftUI. CloudKit does not support constraints then how do I merge duplicate records for my case? I need to know what to do now that I ...
Justin Comstock's user avatar
  • 323
2 votes
0 answers
354 views

I'm using NSPersistentCloudKitContainer with Core Data and I receive errors because my iCloud space is full. The errors printed are the following: <CKError 0x280df8e40: "Quota Exceeded" (...
alpennec's user avatar
  • 2,204
2 votes
2 answers
2k views

I have an app that uses local device only CoreData (NSPersistentContainer). I am looking to migrate so the app is compatible with NSPersistentCloudKitContainer. I understand all the CloudKit setup ...
Charlie S's user avatar
  • 4,707
1 vote
1 answer
478 views

First post here, and desperate for help. I am hitting an issue when developing an app that uses the CloudKit Public DB. I am relatively new to this, and I may be doing something wrong. I have ...
Snark2021's user avatar
  • 41
3 votes
1 answer
881 views

I have an app in production using Core Data + CloudKit, synced using the built in NSPersistentCloudKitContainer. It works perfectly well most of the time, but sometimes it simply won't sync with no ...
Miles's user avatar
  • 574
9 votes
1 answer
1k views

This is a copy of a thread I've created on Apple's Forum here Background I have an established app in the App Store which has been using NSPersistentCloudKitContainer since iOS 13 without any issues. ...
Paul Martin's user avatar
  • 719
1 vote
1 answer
456 views

I have an app that uses Core Data, works great. I decided to try to use iCloud to sync data across multiple devices. I followed the basic steps of changing NSPersistentContainer to ...
Crew3339's user avatar
  • 61
1 vote
0 answers
525 views

I'm working on an Swift App which runs on iOS, macOS and watchOS (Xcode) using CloudKit (see code for the initialization of the CloudKit-Persistency-Container below). The app works great: the data ...
LarsG's user avatar
  • 11
7 votes
1 answer
1k views

I have an app out in the App Store, and I am working on a lightweight migration (adding new attributes and new entities, not deleting anything). From extensive research, I know that I need to add a ...
ap123's user avatar
  • 1,006
6 votes
2 answers
592 views

I'm using NSPersistentCloudKitContainer on iOS15 beta 4 to sync core data across devices. When launching on device, logged into iCloud, I receive the following error in the logs: <...
ryannn's user avatar
  • 1,607
0 votes
1 answer
247 views

I have a record on my CloudKit public database that was made via the NSPersistentCloudKitContainer. In Core Data, the attribute is of type [String] and when I add it to the public database, it is ...
PointOfNilReturn's user avatar
  • 496
3 votes
1 answer
662 views

I have a Core Data app in production and would like to add attributes to existing entities. After research, I found that this is a "lightweight migration," and just need to add ...
fphelp's user avatar
  • 1,646
0 votes
0 answers
32 views

I have a photo album app that uses core-data. As of now it does not utilise login nor do I plan to. My requirement is that the album should sync across a user's multiple iDevices. I was watching https:...
Alejandro Vargas's user avatar
  • 1,394
3 votes
1 answer
1k views

Does Core Data handle simple data-model additions like a new attribute w/out any further "help" from me? In my case, I have an app that uses Core Data for varius things related to a users ...
TheTwoNotes's user avatar
  • 453
4 votes
0 answers
420 views

I have an app that uses NSPersistentCloudKitContainer for iCloud Sync to users who want it and has worked for all platforms (iPhone/iPad/Mac). But now, trying to add Apple Watch support, I realize ...
fphelp's user avatar
  • 1,646
0 votes
1 answer
329 views

I have [String] and [Int] attributes in my entity on Core Data/type on CloudKit, where they are String list and Int64 list respectively. I'm trying to synchronize them via ...
Атанас Начков's user avatar
  • 794
1 vote
1 answer
599 views

I have found a strange problem with iCloud Sync. Situation: I have developed an iOS, iPadOS & macOS App using SwiftUI. All three Versions share the same Codebase (macOS Version is a Catalyst iPad ...
christophriepe's user avatar
  • 1,731
2 votes
0 answers
204 views

I released an iOS + Mac Catalyst app that uses Core Data and NSPersistentCloudKitContainer. No issues for the users, but something is wrong for me when installing the app from the Mac App Store: it ...
Butterfly Ball's user avatar
  • 142
0 votes
1 answer
825 views

I have set up my Core Data model with NSPersistentCloudKitContainer: struct PersistenceController { static let shared = PersistenceController() let container: NSPersistentCloudKitContainer ...
Gin Tonyx's user avatar
  • 393
0 votes
1 answer
212 views

I'm trying to mirror Core Data to iCloud using CloudKit. When I delete the app on simulator and then run the app, the app does not show any data. I then run it again and this time it shows data. I ...
matchifang's user avatar
  • 5,490
1 vote
0 answers
463 views

Upon attempting to run container = NSPersistentCloudKitContainer(name: "Test") container.initializeCloudKitSchema() I'm getting the following error: NSLocalizedFailureReason=Couldn't ...
Peter Lu's user avatar
  • 167
2 votes
1 answer
585 views

My app uses CoreData+Cloudkit with a public database. By default, iCloud sync with a public database is only done at launch and then every half hour. Since my app requires faster sync, all users are ...
Reinhard Männer's user avatar
  • 15.5k

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