Question

I have a MainWindow class that is built from a nib and set up as follows:

- (void)applicationDidFinishLaunching:(UIApplication *)application
{
    MainViewController *mainView = [[MainViewController alloc] initWithNibName:@"MainViewController"
                                                                        bundle:nil];
    if(!mainView)
    {
        return;
    }
    naviController = [[UINavigationController alloc] initWithRootViewController:mainView];
    [naviController setToolbarHidden:YES];
    [[naviController navigationBar] setTintColor:[UIColor blackColor]];
    [[naviController toolbar] setTintColor:[UIColor blackColor]];
    [self.window setRootViewController:naviController];
    [self.window makeKeyAndVisible];
}

This works and correctly displays the MainViewController, but when I try to scroll down in the MainViewController‘s table view it throws an EXC_BAD_ACCESS. Apparently UIKit is referring to a second MainViewController that was built in [self.window makeKeyAndVisible]; I can’t figure out why it is referencing that over the one I passed into initWithRootViewController:mainView.

Here are the two MainViewControllers. The first one I initialize, the second is created in makeKeyAndVisible.

Here is the second MainViewController being called as a zombie.

Any ideas on why this is happening?

As requested:

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    MainViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"MainViewCell"];
    int i = [indexPath row];
    NSLog(@"%d\n",i);
    if (cell == nil) {
        // Create a temporary UIViewController to instantiate the custom cell.
        UIViewController *temporaryController = [[UIViewController alloc] initWithNibName:@"MainViewCell" bundle:nil];
        // Grab a pointer to the custom cell.
        cell = (MainViewCell *)temporaryController.view;
        // Release the temporary UIViewController.
        [temporaryController release];
    }
    [[cell icon] setImage:[UIImage imageNamed:[[moduleXMLList objectAtIndex:i] objectForKey:@"thumbnail"]]];
    [[cell title] setText:[[moduleXMLList objectAtIndex:i] objectForKey:@"title"]];
    [[cell description] setText:[[moduleXMLList objectAtIndex:i] objectForKey:@"description"]];
    return cell;
}

Answer 1

The problem was that I was using File’s Owner as a MainViewController while having a second UIViewController under Objects. This is wrong, and so once I got rid of the Object and just used File’s Owner it worked like a charm.