Awesome

Note: this is abandoned. I don‘t recommend to use it in any new projects.

UITableView+NSFetchedResultsController

This is an example of how to use the UITableView with NSFetchedResultsController with the least hassle. The code is based on the investigation and hard work of Michael Fey; you can also see this gist.

His code greatly improves the usual sample code you can find around, including in Apple's sample code. Since I much prefer to extract these away and no repeat them in each UITableViewController I do, I have created this category. Simply include it and write your UITableView delegate methods in the same way.

Setup

• [CocoaPods]
  Add pod 'UITableView+NSFetchedResultsController' to your podfile.
• Manual
  Copy UITableView+NSFetchedResultsController.h/m to your project.

Usage

Just include the header and write your NSFetchedResultsControllerDelegate methods like this:

- (void)controller:(NSFetchedResultsController *)controller
   didChangeObject:(id)anObject
	   atIndexPath:(NSIndexPath *)indexPath
	 forChangeType:(NSFetchedResultsChangeType)type
	  newIndexPath:(NSIndexPath *)newIndexPath {

	[self.tableView addChangeForObjectAtIndexPath:indexPath
									forChangeType:type
									 newIndexPath:newIndexPath];
}

- (void)controller:(NSFetchedResultsController *)controller
  didChangeSection:(id<NSFetchedResultsSectionInfo>)sectionInfo
		   atIndex:(NSUInteger)sectionIndex
	 forChangeType:(NSFetchedResultsChangeType)type {

	[self.tableView addChangeForSection:sectionInfo
								atIndex:sectionIndex
						  forChangeType:type];
}

- (void)controllerDidChangeContent:(NSFetchedResultsController *)controller {
	
	[self.tableView commitChanges];
}

Credit

Michael Fey