sectionIndexTitlesForTableView keys are off? - iphone

Question

I have implemented a Section Index for my tableview. It returns the correct letters for what is stored in coredata (A B C D F G H I K M N O P Q R S T U V W). However the indexes are off.
If I click on the letter M it takes me to letter I, etc.. The name of the index I am attempting to sort on is name
What is there for me to do to fix the index?
I am also implementing numberOfSectionsInTableView,numberOfRowsInSection, and titeForHeaderInSection. The section headers are displayed correctly.
- (NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView {
NSArray * sectionTitlesArray = [fetchedResultsController sectionIndexTitles];
NSMutableArray *newTitles = [[NSMutableArray alloc] init];
for (NSString *state in sectionTitlesArray) {
[newTitles addObject:[NSString stringWithFormat:#"%#", state]];
}
return [newTitles autorelease];
}
Including the FRC just in case it is relevant:
- (NSFetchedResultsController *)fetchedResultsController {
if (fetchedResultsController == nil) {
NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init];
NSEntityDescription *entity = [NSEntityDescription entityForName:#"WidgetCoItems" inManagedObjectContext:managedObjectContext];
[fetchRequest setEntity:entity];
NSSortDescriptor *sortDescriptor1 = [[NSSortDescriptor alloc] initWithKey:#"state" ascending:YES];
NSSortDescriptor *sortDescriptor2 = [[NSSortDescriptor alloc] initWithKey:#"name" ascending:YES];
NSArray *sortDescriptors = [[NSArray alloc] initWithObjects:sortDescriptor1,sortDescriptor2, nil];
[fetchRequest setSortDescriptors:sortDescriptors];
NSFetchedResultsController *aFetchedResultsController = [[NSFetchedResultsController alloc] initWithFetchRequest:fetchRequest managedObjectContext:managedObjectContext sectionNameKeyPath:#"state" cacheName:nil];
aFetchedResultsController.delegate = self;
self.fetchedResultsController = aFetchedResultsController;
[aFetchedResultsController release];
[fetchRequest release];
[sortDescriptor1 release];
[sortDescriptor2 release];
[sortDescriptors release];
}
return fetchedResultsController;
}

Answer 1

- (NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView
{
NSMutableArray *indices = [NSMutableArray array];
id <NSFetchedResultsSectionInfo> sectionInfo;
for( sectionInfo in [fetchedResultsController sections] )
{
[indices addObject:[sectionInfo name]];
}
return indices;
}
- (NSString *)tableView:(UITableView *)aTableView titleForHeaderInSection:(NSInteger)section
{
return [[[fetchedResultsController sections] objectAtIndex:section] name];
}
Try to implement in this way.

Answer 2

- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section {
if ([[<#Fetched results controller#> sections] count] > 0) {
id <NSFetchedResultsSectionInfo> sectionInfo = [[<#Fetched results controller#> sections] objectAtIndex:section];
return [sectionInfo name];
} else
return nil;
}
- (NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView {
return [<#Fetched results controller#> sectionIndexTitles];
}
- (NSInteger)tableView:(UITableView *)tableView sectionForSectionIndexTitle:(NSString *)title atIndex:(NSInteger)index {
return [<#Fetched results controller#> sectionForSectionIndexTitle:title atIndex:index];
}