Question

Once an array is properly filled, when I call it again using tableview reload, first time (after clean) returns an empty value and following executions returns EXC_BAD_ACCES. Trying to provide all code needed… Thanks for help!

in .h file:

    @interface userViewController : UIViewController <UITableViewDelegate, UITableViewDataSource> {

        NSArray *appData;

        IBOutlet UIActivityIndicatorView *activityIndicator;
        IBOutlet UILabel *status;
        IBOutlet UITableView *mainTable;
        IBOutlet UIBarButtonItem *refresh; 
    }

    @property (nonatomic, retain) UIActivityIndicatorView *activityIndicator;
    @property (nonatomic, retain) UILabel *status;
    @property (nonatomic, retain) UITableView *mainTable;
    @property (nonatomic, retain) UIBarButtonItem *refresh;
    @property (nonatomic, retain) NSArray *appData;

- (IBAction) refresca: (id)sender;

in .m file, when requestFinished function is executed, appData is properly filled.

- (void)requestFinished:(ASIHTTPRequest *)request {
    NSLog(@"%@", [request responseString]);
    [activityIndicator stopAnimating];
    activityIndicator.hidden = YES;

    appData = [[request responseString] componentsSeparatedByString: @"#"]; 

    int x =0;

    while (x<[appData count] - 1)
    {
        NSLog(@"Data = %@",[appData objectAtIndex: x]);
        x = x+1;
    }

}

However, after its execution, when reload tableview, appData seems that is empty and previous conted erased!!

2011-10-13 18:10:43.682 Nimbo[444:207] Data = <UITableViewCellContentView: 0x5c93dd0; frame = (0 0; 320 43); layer = <CALayer: 0x5c953b0>

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

        [tableView setFrame:CGRectMake(0, 44, 320, 412)];

        static NSString* cellIdentifier = @"cellIdentifier";
        UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier];

        if(cell == nil)
        {
            cell = (UITableViewCell*) [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:cellIdentifier];

        }
        cell.accessoryType = UITableViewCellAccessoryNone;
        cell.textLabel.backgroundColor = [UIColor clearColor];


        int x = 0;

        if ([appData count] != 0)
           {
           NSLog(@"Data = %@",[appData objectAtIndex: 0]);
            }

        return cell;
    }

Answer 1

Looks like your instance variable appData is not retained.

EDIT: as others have said, using the property is the best way to go. That will retain your new appData as well as release objects previously assigned there.

Try changing:

    appData = [[request responseString] componentsSeparatedByString: @"#"]; 

to:

    self.appData = [[request responseString] componentsSeparatedByString: @"#"];