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POUITableView's memory leaking issue
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copied!<p>Hi All I have a UITableView with the list of items fetched from sqllite. But there's a memory leak when rendering the view. Following is my cellForRowAtIndexPath method.</p> <pre><code>static NSString *CellIdentifier = @"BarListItemCell"; BarListItemViewCell *cell = (BarListItemViewCell *)[tableView dequeueReusableCellWithIdentifier: CellIdentifier]; if (cell == nil) { NSArray * nib = [[NSBundle mainBundle] loadNibNamed:@"BarListItemViewCell" owner:self options:nil]; for (id cellObject in nib) { if ([cellObject isKindOfClass : [BarListItemViewCell class]]) { cell = (BarListItemViewCell *) cellObject; //break; } } NSString * key = [keys objectAtIndex:[indexPath section]]; NSDictionary * unit = [[barListDataSource objectForKey:key] objectAtIndex:[indexPath row]]; NSLog(@"unit count is %d", [unit retainCount]); cell.name.text = [unit objectForKey:@"name"]; cell.address.text = [unit objectForKey:@"address1"]; cell.features.text = [unit objectForKey:@"features"]; cell.logo.image = [UIImage imageWithData:[unit objectForKey:@"logo"]]; cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator; //cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease]; } return cell; </code></pre> <p>You can see the line "NSLog(@"unit count is %d", [unit retainCount]);". It's very strange that after viewDidLoad, the console displays 3 lines "unit count is 2" (I have 3 items in the whole screen). But when I drag the screen to let the UITableView show the next item, the console displays "unit count is 1". When the [tableView reloadData] method is called, the console displays also "unit count is 1". So it seems that the UITableView will release the datasource automatically. That's why I keeps memory reference count of unit being 2, otherwise, over releasing will happen. But the cost is that the memory occupied by unit will never be freed!</p>

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