Question

I need advice on what to do.

I have several applications on App store and they are all tested and fully functional for all previous iOS’s. But now when I update my device to iOS5 some of them began to crash unexpectedly on alert view item that ask for connecting to internet and show map with current location.

I am not that experienced in development so need some advice what to do? I supposed that with final version of iOS5 these things will be fixed by itself or not.

Thanks.

OK I have torned zombies and found method that makes problems.

    - (void) alertView: (UIAlertView*) alertView didDismissWithButtonIndex:(NSInteger)buttonIndex{
    NSLog(@" Button PRESSED: %d", buttonIndex);
    [alertView release];



    if (buttonIndex == 1) {
        BOOL noConnectionAvailable = NO;
        BOOL hasParentalLimit = NO;

        switch (lastSelectedItem.itemType) {
            case RestaurantItemTypeAddress : {
                if ([NetworkHelper connectedToNetwork] == YES) {
                    AddressController *mapController = [[AddressController alloc] initWithNibName:@"AddressController" bundle:nil restaurant:restaurant];
                    mapController.title = restaurant.res_title;
                    [self.navigationController pushViewController:mapController animated:YES];
                    [mapController release];
                } else 
                    noConnectionAvailable = YES;

                break;
            }
            case RestaurantItemTypeReservationEmail : {
                if ([NetworkHelper connectedToNetwork] == YES) {
                    MFMailComposeViewController *picker = [[MFMailComposeViewController alloc] init];
                    picker.mailComposeDelegate = self;

                    [picker setSubject:@"Reservation"];
                    // Set up recipients
                    NSArray *toRecipients = [NSArray arrayWithObject:lastSelectedItem.itemTextContent];             
                    [picker setToRecipients:toRecipients];

                    // Fill out the email body text
                    NSString *emailBody = @"";
                    [picker setMessageBody:emailBody isHTML:NO];

                    [self presentModalViewController:picker animated:YES];
                    [picker release];

                    [self.tableView deselectRowAtIndexPath:lastSelectedIndexPath animated:YES];
                } else 
                    noConnectionAvailable = YES;

                break;
            }
            case RestaurantItemTypeReservationForm : {
                if ([NetworkHelper connectedToNetwork] == YES) {
                    if ([NetworkHelper canOpenUrl:lastSelectedItem.itemTextContent]) {
                        WebViewController *wvc = [[WebViewController alloc] initWithNibName:@"WebViewController" bundle:nil urlStr:lastSelectedItem.itemTextContent];
                        wvc.title = restaurant.res_title;
                        [self.navigationController pushViewController:wvc animated:YES];
                        [wvc release];
                    } else hasParentalLimit = YES;
                } else
                    noConnectionAvailable = YES;

                break;
            }
            case RestaurantItemTypeWeb : {
                if ([NetworkHelper connectedToNetwork] == YES) {
                    if ([NetworkHelper canOpenUrl:lastSelectedItem.itemTextContent]) {
                        WebViewController *wvc = [[WebViewController alloc] initWithNibName:@"WebViewController" bundle:nil urlStr:lastSelectedItem.itemText];
                        wvc.title = restaurant.res_title;
                        [self.navigationController pushViewController:wvc animated:YES];
                        [wvc release];
                    } else hasParentalLimit = YES;
                } else
                    noConnectionAvailable = YES;

                break;
            }

        }

        if (noConnectionAvailable == YES) {
            UIAlertView* newAlert = [[UIAlertView alloc] initWithTitle:@"Jesolo Official Guide" 
                                                               message:@"Nessuna connessione disponibile." 
                                                              delegate:self 
                                                     cancelButtonTitle:@"OK"
                                                     otherButtonTitles:nil];
            [newAlert show]; 
        }

        if (hasParentalLimit == YES) {
            UIAlertView* newAlert = [[UIAlertView alloc] initWithTitle:@"Jesolo Official Guide" 
                                                               message:@"Navigazione su Web non consentita." 
                                                              delegate:self 
                                                     cancelButtonTitle:@"OK"
                                                     otherButtonTitles:nil];
            [newAlert show];

        }

    }

    [self.tableView deselectRowAtIndexPath:lastSelectedIndexPath animated:NO];

}

The log is different on iOS4 and iOS5.
On iOS5 it said:

 2011-11-04 16:26:28.550 Jesolo-EN[5693:207]  Button PRESSED: 1
2011-11-04 16:26:28.776 Jesolo-EN[5693:207] *** -[NSIndexPath isEqual:]: message sent to deallocated instance 0xe6b6fc0
sharedlibrary apply-load-rules all
Current language:  auto; currently objective-c
warning: Attempting to create USE_BLOCK_IN_FRAME variable with block that isn't in the frame.
(gdb) 

and on iOS4 said:

2011-11-04 16:28:08.087 Jesolo-EN[5859:207]  Button PRESSED: 1
2011-11-04 16:28:08.162 Jesolo-EN[5859:207] *** -[UIAlertView release]: message sent to deallocated instance 0x78c4940
sharedlibrary apply-load-rules all
Current language:  auto; currently objective-c
(gdb) 

I understand that i release data before i use them but when I run app without enabled zombies it work fine on iOS4 and on iOS5 it run one time and then 10 times crash.

Answer 1

I am finding that references to ivars that previously worked are now needing to be referenced as self.ivar. Perhaps your reference to managedObjectContext should instead be self.managedObjectContext?