Question

another objective c question for you. Probably a simple one too…

In my viewDidLoad method I am setting a variable. I need to access this within - (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath however I am receivig the following error and I don’t really know a way to sort it!

-[CFString intValue]: message sent to deallocated instance 0x592dcb0

- (void)viewDidLoad
{   
    //code to get json is here
    totalInCategory = [parsedJson objectForKey:@"TotalInCategory"];
    NSLog(@"totalincat %i",[totalInCategory intValue]);

    [super viewDidLoad];
}

- (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)celllforRowAtIndexPath:(NSIndexPath *)indexPath
{
    NSLog(@"totalincat %i",[totalInCategory intValue]);

    if((indexPath.row == [myArray count]-1)&&(indexPath.row < [totalInCategory intValue]))
    {
        //code to get more rows
        [self.tableView reloadData];
    }
}

I have NSString *totalInCategory; set up and synthesized.

totalInCategory is fine within viewDidLoad (as far as I’m aware that is), but nowhere else… any ideas would be really handy!

Answer 1

Retain the data…

totalInCategory = [[parsedJson objectForKey:@"TotalInCategory"] retain];

objectForKey returns an autoreleased object which you need to retain if you wish to use it. Don’t forget to add a [totalInCategory release]; in the dealloc.