How to get objects after CoreData Context merged
- by Emmettoc
Hi,
I tried to save data and merge with CoreData and multi-thread for iPhone app.
But I can't get managed objects in the main thread after merging.
I wrote code just like this:
[managedObjectContext performSelectorOnMainThread:@selector(mergeChangesFromContextDidSaveNotification:)
withObject:notification
waitUntilDone:YES];
[self performSelectorOnMainThread:@selector(didMerged:) withObject:objectIds waitUntilDone:YES];
So I tried to pass objectIds to get NSManagedObject instances in the main thread which were generated in another thread. At first I tried "objectWithId" method but it generated fault objects. Then I tried "existingObjectWithID" method but it generated objects partly and others were nil with following Error:
[Error] Error Domain=NSCocoaErrorDomain Code=133000 "Operation could not be completed. (Cocoa error 133000.)"
What is wrong? Is there any way how to retrieve all objects by objectIds after merging in another thread?
Thank you.
