“NSPersistentCloudKitContainer”

Why don't you use `if #available` ? lazy var persistentContainer: NSPersistentContainer = { if #available(iOS 13.0, *) { let container = NSPersistentCloudKitContainer(name: Shopping_App) container.loadPersistentStores(completionHandler: { (storeDescription, error) in if let error = error as NSError? { fatalError(Unresolved error (error), (error.userInfo)) } }) return container } else { let container = NSPersistentContainer(name: Shopping_App) container.loadPersistentStores(completionHandler: { (storeDescription, error) in if let error = error as NSError? { fatalError(Unresolved error (error), (error.userInfo)) } }) return container } }()

For anyone else finding this:You need to call container.initializeCloudKitSchema() after container.loadPersistentStores.You don't really need to call container.initializeCloudKitSchema() at all, as CloudKit will create your schema on the fly. initializeCloudKitSchema just sends some fake data for your model, so it's handy to see if anything's going to break that Xcode didn't warn you about.Here's some code that works in Xcode 11 beta 5 to initialize an NSPersistentCloudKitContainer using a local store and a cloud store (see the Manage Multiple Stores section of the Setting Up Core Data doc). // MARK: - Core Data stack /// Convenience method so you can do DataManager.shared.context instead of DataManager.shared.persistentContainer.viewContext. lazy var context = self.persistentContainer.viewContext /// persistentContainer.viewContext lazy var persistentContainer: NSPersistentContainer = { /* The persistent container for the application. This implementation creates and returns a container, having loade

It works in the simulator but syncs only on app startup when you set the automaticallyMergesChangesFromParent-option on the viewContext. See https://stackoverflow.com/questions/56601716/how-to-get-default-project-with-nspersistentcloudkitcontainer-up-and-runningThe actual sync via push notification only works on real devices.

You missed his point. Data entereed after setting up NSPersistentCloudKitContainer synced. It was pre-existing data which did not sync. For a person with a core data app who wants to use CloudKit, this problem is huge. And I'll bet that the original author signed up for remote notifications. It's not that he didn't get a notification, he didn't get the data.

Just utilizing the container doesn't enable the sync. You have to add/request the capabilities throuigh your plist file (iCloud under capabilities, may require background too, but i'm unsure). Pretty sure you need remote notifications as well. I read on a blog somewhere a step by step to get it working, but I haven't found 'Official' instructions for anything more than the class declaration yet. I 'think' I googled NSPersistentCloudKitContainer and tutorial.. or maybe getting started.

Update: Filed a feedback report since this seems to be an issue others are encountering as well. (See https://www.andrewcbancroft.com/blog/ios-development/data-persistence/nspersistentcloudkitcontainer-buggy-behavior-list/)

Besides being logged into iCloud, iCloud Drive needs to be activated in your device settings. NSPersistentCloudKitContainer always writes into the private database. Since the private database is somehow connected to iCloud Drive, iCloud Drive must be enabled in order to work.

Apparently does not work on simulator only actual devices. See this from Andrew Bancroft https://www.andrewcbancroft.com/blog/ios-development/data-persistence/getting-started-with-nspersistentcloudkitcontainer/

Agreed, I read the docs to mean that sharing is possible but I’m not able to use NSPersistentCloudKitContainer methods that return CKRecords based on managed objects at this time. I am hoping this is just due to early beta issues.

I'm currently facing the same issue (Also for fetching record IDs). As far as Apple stated here, this function can be used for creating shares, but I'm not sure if the NSPersistentCloudKitContainer is able to work with shared databases.

The presenter at WWDC 2019 (Nick Gillett) mentioned that Apple maintains a custom Zone in the private database (around 10:50 in the video).Since records get saved in the private database, I would think that CKShares and NSPersistentCloudKitContainer are a no-go combo.But, according to Apple's documentation, you can access the CKRecord for a specific managed object using dedicated methods, which will allow you to create CKShares: https://developer.apple.com... So I am confused.

I've been waiting on CloudKit + CoreData integration for a while, and I don't see how NSPersistentCloudKitContainer can't be used to share. Zero of my users has asked to sync the data between devices, everyone wants to share it between users, and how is such a core feature missing?Have to say, I'm not sure if it's missing because I can't find any documentation or tutorials, but it sure looks that way!

Once I have the path, I plan to do this.lazy var persistentContainer: NSPersistentCloudKitContainer = { let container = NSPersistentCloudKitContainer(name: “MyAppName”) // Create a store description for a CloudKit-backed local store let cloudStoreLocation = URL(fileURLWithPath: Original or Ubiquity Path) let cloudStoreDescription = NSPersistentStoreDescription(url: cloudStoreLocation) cloudStoreDescription.configuration = Cloud // Set the container options on the cloud store cloudStoreDescription.cloudKitContainerOptions = NSPersistentCloudKitContainerOptions( containerIdentifier: com.my.container) // Update the container's list of store descriptions container.persistentStoreDescriptions = [ cloudStoreDescription, ] // Load store container.loadPersistentStores { storeDescription, error in guard error == nil else { fatalError(Could not load persistent stores. (error!)) } } return container}()