I'm experiencing a persistent issue with CloudKit sharing in my iOS application. When attempting to present a UICloudSharingController, I receive the error message "Unknown client: ChoreOrganizer" in the console.
App Configuration Details:
App Name: ChoreOrganizer
Bundle ID: com.ProgressByBits.ChoreOrganizer
CloudKit Container ID: iCloud.com.ProgressByBits.ChoreOrganizer
Core Data Model Name: ChoreOrganizer.xcdatamodeld
Core Data Entity: Chore
Error Details:
The error "Unknown client: ChoreOrganizer" occurs when I present the UICloudSharingController
This happens only on the first attempt to share; subsequent attempts during the same app session don't show the error but sharing still doesn't work
All my code executes successfully without errors until UICloudSharingController is presented
Implementation Details:
I'm using NSPersistentCloudKitContainer for Core Data synchronization and UICloudSharingController for sharing. My implementation creates a custom CloudKit zone, saves both a record and a CKShare in that zone, and then presents the sharing controller.
Here's the relevant code:
@MainActor
func presentSharing(from viewController: UIViewController) async throws {
// Create CloudKit container
let container = CKContainer(identifier: containerIdentifier)
let database = container.privateCloudDatabase
// Define custom zone ID
let zoneID = CKRecordZone.ID(zoneName: "SharedChores", ownerName: CKCurrentUserDefaultName)
do {
// Check if zone exists, create if necessary
do {
_ = try await database.recordZone(for: zoneID)
} catch {
let newZone = CKRecordZone(zoneID: zoneID)
_ = try await database.save(newZone)
}
// Create record in custom zone
let recordID = CKRecord.ID(recordName: "SharedChoresRoot", zoneID: zoneID)
let rootRecord = CKRecord(recordType: "ChoreRoot", recordID: recordID)
rootRecord["name"] = "Shared Chores Root" as CKRecordValue
// Create share
let share = CKShare(rootRecord: rootRecord)
share[CKShare.SystemFieldKey.title] = "Shared Tasks" as CKRecordValue
// Save both record and share in same operation
let recordsToSave: [CKRecord] = [rootRecord, share]
_ = try await database.modifyRecords(saving: recordsToSave, deleting: [])
// Present sharing controller
let sharingController = UICloudSharingController(share: share, container: container)
sharingController.delegate = shareDelegate
// Configure popover
if let popover = sharingController.popoverPresentationController {
popover.sourceView = viewController.view
popover.sourceRect = CGRect(
x: viewController.view.bounds.midX,
y: viewController.view.bounds.midY,
width: 1, height: 1
)
popover.permittedArrowDirections = []
}
viewController.present(sharingController, animated: true)
} catch {
throw error
}
}
Steps I've already tried:
Verified correct bundle ID and container ID match in all places (code, entitlements file, Developer Portal)
Added NSUbiquitousContainers configuration to Info.plist
Ensured proper entitlements in the app
Created and configured proper provisioning profiles
Tried both default zone and custom zone for sharing
Various ways of saving the record and share (separate operations, same operation)
Cleaned build folder, deleted derived data, reinstalled the app
Tried on both simulator and physical device
Confirmed CloudKit container exists in CloudKit Dashboard with correct schema
Verified iCloud is properly signed in on test devices
Console Output:
1. Starting sharing process
2. Created CKContainer with ID: iCloud.com.ProgressByBits.ChoreOrganizer
3. Using zone: SharedChores
4. Checking if zone exists
5. Zone exists
7. Created record with ID: <CKRecordID: 0x3033ebd80; recordName=SharedChoresRoot, zoneID=SharedChores:__defaultOwner__>
8. Created share with ID: <CKRecordID: 0x3033ea920; recordName=Share-C4701F43-7591-4436-BBF4-6FA8AF3DF532, zoneID=SharedChores:__defaultOwner__>
9. About to save record and share
10. Records saved successfully
11. Creating UICloudSharingController
12. About to present UICloudSharingController
13. UICloudSharingController presented
Unknown client: ChoreOrganizer
Additional Information:
When accessing the CloudKit Dashboard, I can see that data is being properly synced to the cloud, indicating that the basic CloudKit integration is working. The issue appears to be specific to the sharing functionality.
I would greatly appreciate any insights or solutions to resolve this persistent "Unknown client" error. Thank you for your assistance.
