Remove sections with no rows from UITableView

I would like to remove section headers from a UITableView if there are no rows for that section.

I'm using UILocalizedIndexedCollation for my section headers. So when I create the headers, I don't necessarily know what sections will have content.

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
    // Return the number of sections.
    //return [customerSections count];
    if (tableView == self.searchDisplayController.searchResultsTableView) {
        return 1;
    }
    return [[[UILocalizedIndexedCollation currentCollation] sectionTitles] count];
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    //NSLog(@"Section: %i", section);
    if (tableView == self.searchDisplayController.searchResultsTableView) {
        return self.filteredCustomers.count;
    } else {
        return [[self.customerData objectAtIndex:section] count];
    }
}

- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section {
    // The header for the section is the region name -- get this from the region at the section index.

    if (tableView == self.searchDisplayController.searchResultsTableView) {
        return nil;//@"Results";
    }
    return [[[UILocalizedIndexedCollation currentCollation] sectionTitles] objectAtIndex:section];
}

- (NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView
{
    //return [customerSections allKeys];
    if (tableView == self.searchDisplayController.searchResultsTableView) {
        return nil;
    }
    return [[UILocalizedIndexedCollation currentCollation] sectionIndexTitles];
}

- (NSInteger)tableView:(UITableView *)tableView sectionForSectionIndexTitle:(NSString *)title atIndex:(NSInteger)index
{
    return [[UILocalizedIndexedCollation currentCollation] sectionForSectionIndexTitleAtIndex:index];
}