iOS5 problems with old applications - iphone

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?

Answer 2

I am not very much sure about this but you can try this also..
Click on your **project**->go to **info**-> go to **build** section-> in that go to **Deployment** section->then **IOS deployment** section choose the **deployment target to IOS 5** or latest and save and run...
Hope it may help you... :)

Answer 3

OK I manage to find solution.
Somehow iOS5 detect some release of objects that doest'n exist in iOS4 and I tried to find them but gave up.
Instead of that I turn on ARC and comment all release and dealloc and my app is doing really fine. I get impression that now it works even faster. Hope this will help somebody...