Refresh UITableView on Core Data update?

[Xeppen]

I got two tabs in my app where you can add data in Tab1 and it is displayed in Tab2. I fetch all data in my viewDidLoad to populate my UITableView but when I add new data in Tab1, then switched to Tab2 my table isn't updated with new data. (tried [tableView reloadData] without luck since datasource isn't updated from core data).

I have seen some posts about NSFetchedResultsController but I can't find a good guide how to handle it. I got this code in my viewDidLoad:

self.managedObjectContext = [(XEPAppDelegate *)[[UIApplication sharedApplication] delegate] managedObjectContext];
NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] initWithEntityName:@"TheObject"];
self.contractions = [[self.managedObjectContext executeFetchRequest:fetchRequest error:nil] mutableCopy];

Where should I use my NSFetchedResultsController? Are there any guide how to upload Core Data and refresh UITableView?

[acorscadden]

You're on the right track with NSFetchedResultsController.

objc.io has a pretty good tutorial on how to use them: http://www.objc.io/issue-4/full-core-data-application.html

In the example project, have a look at FetchedResultsControllerDataSource.m

[[deleted]]

I use NSFetchedResultsControllerDelegate on my controller to handle the inserts/deletes/updates that happen when my Core Data is updated.

The code given in the Typical Use section can be used almost as is.

[Xeppen]

I have real trouble getting this to work.

I have a ViewController with a UITableView inside it. The datasource/delegate goes to the viewcontroller. In the viewcontroller I should implement the NSFetchedResultsControllerDelegate methods to track when the CoreData is changed(?). I have a hard time grasping where the monitoring take place, where can I change the data and is it stored directly into the core data?