ios - reloadData TableView & Core Data - objective-c

Question

I am having a bit of trouble with reloading my tableView which is set in a UIViewController.
It is populated with CoreData (This works)
It is also got a custom TableViewCell for some design purposes
Now normally what I would use is this : [_mainTableView reloadData];
That does not work this time.
Is this because of the custom Cell or is Core Data's FetchRequest which loads fine initially and shows the data when I relaunch the app??
I have seen several questions and tutorials on SO and Google, but none of them seem to work in my case.
I have also explored these methods:
- (void)controllerWillChangeContent:(NSFetchedResultsController *)controller
{
[self.tableView beginUpdates];
}
- (void)controllerDidChangeContent:(NSFetchedResultsController *)controller
{
[self.tableView endUpdates];
}
found here: beignUpdates
Any advice is appreciated.

Answer 1

Have you synthesized your table view? Please try this:
[self.mainTableView reloadData];
Hope, it'll work. And, since you reload it at viewWillAppear, please sure that neither it allocate new times nor it's delegate/datasource assign again, if it is then, first time, do something like that:
_mainTableView.delegate = nil;
_mainTableView.delegate = self;//similarly, for datasource...
And, you need to explicitly call your viewWillAppear(I suppose you're already doing this.)
Please let me know in any concern.
Thanks.

Answer 2

Thank you for the input, I finally got it sorted.
Instead of calling the [_mainTableView reloadData] I had to call the fetchmethod again.
if (_managedObjectContext == nil)
{
_managedObjectContext = [(AppDelegate *)[[UIApplication sharedApplication] delegate] managedObjectContext];
NSLog(#"After _managedObjectContext: %#", _managedObjectContext);
}
[self setupFetchedResultsController];