Question

i want to sort my Data in my Tableview. I have UIButtons with IBAction to call the sort.
I have created a string which contains the sortKey. I am setting the the key and call the fetchedResultsController again, to sort the tableview.

Problem is, fetchedResultsController method is not called and the sorting doesnt work.
here is my code:

- (IBAction) actionSortCardColor:(id) sender {
    XLog(@"");
    sortString = @"colorOrder";
    [self fetchedResultsController];

    [self actionRemoveSortView:sender];
}    

Here my fetchedResultsController method:

- (NSFetchedResultsController *)fetchedResultsController
{

[...]


NSPredicate *inboxPred = [NSPredicate predicateWithFormat:@"archived == 0"];

// Set the batch size to a suitable number.
[fetchRequest setFetchBatchSize:20];
[fetchRequest setPredicate:inboxPred];

XLog(@"sortString: %@", sortString);
if (sortString == nil) {
    sortString = [[NSString alloc] initWithString:@"sortingOrder"];
}

NSSortDescriptor *sortDescriptor = [[[NSSortDescriptor alloc] initWithKey:@"setTitle" ascending:YES] autorelease];
NSSortDescriptor *sortDescriptor2 = [[[NSSortDescriptor alloc] initWithKey:sortString ascending:YES] autorelease];
NSArray *sortDescriptors = [[[NSArray alloc] initWithObjects:sortDescriptor, sortDescriptor2, nil] autorelease];

[fetchRequest setSortDescriptors:sortDescriptors];

[...]
}  

Answer 1

Where is it that you let the table view know about these changes? You’ll need to reload the data for your table view instance [tableView reloadData];

When you set the __fetchedResultsController to nil, it cannot update the UITable view with any changes because it isn’t in scope.