CloudKit + CoreData on iOS and watchOS sync not working

user_4089350 0
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I have a iOS + watchOS app that I want to use the same data model. So I created a CoreData stack and I set up everything for NSPersistentCloudKitContainer.

My iOS app can access the CloudKit container as I can read from the logs in the console, however when my watchOS app wants to connect to the CloudKit container (same iCloud.foo.myID as the iOS app) I get an error saying Invalid bundle ID for container.

I tried several new containers. I also retried to check all checkboxes on the capabilities pane again and again.

Am I missing something?

(I also read Core data + CloudKit - sharing between iOS and watchOS companion app which did not help)

cloudkit apple-watch core-data ios
1 Answers

I had same problem. Solution for me was make xcdatamodel shared for both app (in my case it's not standalone app for watch, but extension). So just check the box for share this model for both app: enter image description here

Also set class generation to Cathegory/Extension or Manual, because you need a little bit different implementation of entity class for iOS and WatchOS. If someone know how to use one class and checking which OS call the instance it will be perfect.

enter image description here

user_5215030
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