How to access managedObjectContext in my own background queue after iOS 9.0

Question

I realized that the in core data, when you init an NSManagedObjectContext , NSConfinementConcurrencyType is deprecated after iOS 9.0. I would like to access NSManagedObjectContext in my own background queue with concurrency = 1. I know that the Moc of privateQueueConcurrencyType will create its own queue to execute code and merge to a parent Moc, which seems not what I want. ( mainQueueConcurrencyType will run the code on main queue which is not what I want either)

Is there anyway that I can manage core data to run in my own background queue?

Answer 1

NSConfinementConcurrencyType is deprecated. That means you should not use it.

You have two choices.

1. Access a MOC of NSMainQueueConcurrencyType on the main queue.

2. Access a MOC of either NSMainQueueConcurrencyType or NSPrivateQueueConcurrencyType from any thread you want, but using the performBlock and performBlockAndWait API.

I strongly suggest using the performBlock API.

Also, using a MOC of NSPrivateQueueConcurrencyType does not require using a parent/child relationship.