Core Data managed object context thread synchronisation

Question

I\'m have an issue where i\'m updating a many-to-many relationship in a background thread, which works fine in that threa, but when I send the object back to the main thread the

Answer 1

If you save the background context on the background thread and then listen for NSManagedObjectContextObjectsDidChangeNotification on the main thread you can call -mergeChangesFromContextDidSaveNotification: on the main context (on the main thread) and the changes will show up as soon as you perform the save on the background thread.