NSScreencast Episode #69 NSFetchedResultsController

NSFetchedResultsController - NSScreencast

• mainContextとか使い分けしている
• viewDidLoad
  • self.context = [[OILDataModel shareDataModel] mainContext];
  • [self setupFetchedResultsController];
    • self.fetchedResultsController.delegate = self;
• numberOfRowsInSection の辺り
  • [self.fetchedResultsController sections][section];
  • [sectionInfo numberOfObjects];
• When another context saves data
  • listenForChanges
  • dispatch_async, mergeChangesFromContextDidSaveNotification
• NSFetchedResultsControllerDelegate
  • case NSFetchedResultsChangeInsert:
  • case NSFetchedResultsChangeDelete:
  • case NSFetchedResultsChangeUpdate:

難しい
まだ実際によく使ったことない