Core Data + CloudKit works for development but not production

Question

Created Mar ’23

Replies 2

Boosts 0

Participants 2

I enabled Core Data + CloudKit for my MacOS and iOS app to allow sync between the two. I was able to test the sync during development and it's been syncing to My development database container just fine and I can fetch the changes from both my apps.

However, once I distributed my app to test flight/app store, the Production database is not getting any activity at all.

I did made sure I deploy my database schema to production per other troubleshooting post online.

Am I missing any additional setup required for production?

Below is my Persistence struct for reference (edited the "App Name", using the the name of my app in actual file):

 static let shared = PersistenceController()
 
 
let container: NSPersistentCloudKitContainer
 
init(inMemory: Bool = false) {
    container = NSPersistentCloudKitContainer(name: "App Name")
    
    &#x2F;&#x2F; Only initialize the schema when building the app with the
    &#x2F;&#x2F; Debug build configuration.
    #if DEBUG
    do {
        &#x2F;&#x2F; Use the container to initialize the development schema.
        try container.initializeCloudKitSchema(options: [])
    } catch {
        &#x2F;&#x2F; Handle any errors.
    }
    #endif
    
    &#x2F;&#x2F; Enable automatic syncing with CloudKit
    let description = container.persistentStoreDescriptions.first
    description?.setOption(true as NSNumber, forKey: NSPersistentHistoryTrackingKey)
    description?.setOption(true as NSNumber, forKey: NSPersistentStoreRemoteChangeNotificationPostOptionKey)
    
    if inMemory {
        container.persistentStoreDescriptions.first!.url = URL(fileURLWithPath: "&#x2F;dev&#x2F;null")
    }
    
    &#x2F;&#x2F; Load the persistent store with a completion handler that handles errors and initializes the container
    container.loadPersistentStores(completionHandler: { (storeDescription, error) in
        if let error = error as NSError? {
            print("Unresolved error with PersistenceStores \(error), \(error.userInfo)")
        }
    })
    
    &#x2F;&#x2F; Allow changes made in the view context to automatically propagate to other contexts
    container.viewContext.automaticallyMergesChangesFromParent = true
}

Boost

Answer 1

pyil OP

Mar ’23

Figured out the issue. It looks like when I added iCloud to an existing Core Data app, the Cloudkit framework/library was not manually added. Therefore during local development, it works but when deployed to testflight it does not have Cloudkit.

0

Answer 2

29RUS OP

Feb ’24

I encountered a similar problem in a production environment. Please let me know how the CloudKit library can be added manually?

0

	static let shared = PersistenceController()


	let container: NSPersistentCloudKitContainer

	init(inMemory: Bool = false) {
	container = NSPersistentCloudKitContainer(name: "App Name")

	// Only initialize the schema when building the app with the
	// Debug build configuration.
	#if DEBUG
	do {
	// Use the container to initialize the development schema.
	try container.initializeCloudKitSchema(options: [])
	} catch {
	// Handle any errors.
	}
	#endif

	// Enable automatic syncing with CloudKit
	let description = container.persistentStoreDescriptions.first
	description?.setOption(true as NSNumber, forKey: NSPersistentHistoryTrackingKey)
	description?.setOption(true as NSNumber, forKey: NSPersistentStoreRemoteChangeNotificationPostOptionKey)

	if inMemory {
	container.persistentStoreDescriptions.first!.url = URL(fileURLWithPath: "/dev/null")
	}

	// Load the persistent store with a completion handler that handles errors and initializes the container
	container.loadPersistentStores(completionHandler: { (storeDescription, error) in
	if let error = error as NSError? {
	print("Unresolved error with PersistenceStores \(error), \(error.userInfo)")
	}
	})

	// Allow changes made in the view context to automatically propagate to other contexts
	container.viewContext.automaticallyMergesChangesFromParent = true
	}