How to reload a single section in a UITableView

Question

Hey I'm having trouble trying to figure this one out. UITableView has a method [tableView reloadSections:(NSIndexSet *) withRowAnimation:(UITableViewRowAnimation)] now according to the Apple docs this method takes in an NSIndexSet object and reloads what ever section specified by the index set. The problem is even though im only sending in one section to this method it ends up reloading all the sections and i can't understand why this is happening. Any help will be greatly appreciated

Answer 1

Even if you try reloading only a section, you must also provide the populating process section by section:

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

static NSString *CellIdentifier = @"DetailViewCell";

UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
    cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault
                                   reuseIdentifier:CellIdentifier] autorelease];
    cell.selectionStyle = UITableViewCellSelectionStyleNone;
}

   if (indexPath.section == 0){
      //blablabla
      cell.textLabel = blabla
   }
   else if (indexPath.section == 1){
      ///blablabla
      cell.textLabel = blabla2
   }
return cell;
}

... because reloading the table (is it only a section or the whole table) wil call the method above