Question

I am developing a app where with a custom tabbar opening different tableview. The information to the tableview is feeded by a JSON remote feed. And saved into Core Data with custom nsmanagedobject.

The error is triggered after I opening and closing uiview in didSelectRowAtIndexPath. The detail view is opening over the tableview and have a closing button in the corner. The view is only for read articles, not for edit, rewrite or delete. The error appear after I have opened and closed the detail view twice.

The log say that the NSManagedObject is has been invalidated. But how, when i am not deleting or updating the object. It happening with every cell row.

What i am doing wrong?

The log:

* Terminating app due to uncaught exception ‘NSObjectInaccessibleException’, reason: ‘The NSManagedObject with ID:0x75401c0 has been invalidated.’

* Call stack at first throw:

(

0 CoreFoundation 0x013d15a9 exceptionPreprocess + 185

1 libobjc.A.dylib 0x01525313 objc_exception_throw + 44

2 CoreData 0x0117f120 -[NSFaultHandler _fireFirstAndSecondLevelFaultsForObject:withContext:] + 0

3 CoreData 0x01110933 _PF_FulfillDeferredFault + 499

4 CoreData 0x011149af _sharedIMPL_pvfk_core + 95

5 CoreData 0x011247c0 _pvfk_9 + 32

6 Ultima 0x00014bf7 -[ProgramTable tableView:cellForRowAtIndexPath:] + 4247

7 UIKit 0x004c1b98 -[UITableView(UITableViewInternal) _createPreparedCellForGlobalRow:withIndexPath:] + 634

8 UIKit 0x004b74cc -[UITableView(UITableViewInternal) _createPreparedCellForGlobalRow:] + 75

9 UIKit 0x004cc8cc -[UITableView(_UITableViewPrivate) _updateVisibleCellsNow:] + 1561

10 UIKit 0x004c490c -[UITableView layoutSubviews] + 242

11 QuartzCore 0x0014fa5a -[CALayer layoutSublayers] + 181

12 QuartzCore 0x00151ddc CALayerLayoutIfNeeded + 220

13 QuartzCore 0x000f70b4 _ZN2CA7Context18commit_transactionEPNS_11TransactionE + 310

14 QuartzCore 0x000f8294 _ZN2CA11Transaction6commitEv + 292

15 QuartzCore 0x000f846d _ZN2CA11Transaction17observer_callbackEP19__CFRunLoopObservermPv + 99

16 CoreFoundation 0x013b289b __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION + 27

17 CoreFoundation 0x013476e7 __CFRunLoopDoObservers + 295

18 CoreFoundation 0x013101d7 __CFRunLoopRun + 1575

19 CoreFoundation 0x0130f840 CFRunLoopRunSpecific + 208

20 CoreFoundation 0x0130f761 CFRunLoopRunInMode + 97

21 GraphicsServices 0x01e6d1c4 GSEventRunModal + 217

22 GraphicsServices 0x01e6d289 GSEventRun + 115

23 UIKit 0x0045ac93 UIApplicationMain + 1160

24 Ultima 0x000028e9 main + 121

25 Ultima 0x00002865 start + 53
)

terminate called throwing an exception[Switching to process 429 thread 0xec03]

sharedlibrary apply-load-rules all

Current language: auto; currently objective-c

My cellForRowAtIndexPath looks like:

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = @"Cell";

ProgramCelle *cell = (ProgramCelle*)[tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
    cell = [[[ProgramCelle alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
}
int row = indexPath.row;
int section = indexPath.section;

NSDateFormatter *formatter = [[NSDateFormatter alloc]init];
[formatter setDateFormat:@"HH:mm"];

if(section == 0){
    Program *p =[eight objectAtIndex:row];
    cell.primaryTitle.text = p.title;
    cell.primaryTitle.textColor = [UIColor blueColor];
    Scene *s = p.scene;
    cell.secondaryTitle.text = s.name;
    NSDate *dato = p.tidspunkt;

    NSString *time = [formatter stringFromDate:dato];
    cell.klokke.text = time;

}
if(section == 1){
    Program *p =[nine objectAtIndex:row];
    cell.primaryTitle.text = p.title;
    cell.primaryTitle.textColor = [UIColor blueColor];
    Scene *s = p.scene;
    cell.secondaryTitle.text = s.name;
    NSDate *dato = p.tidspunkt;

    NSString *time = [formatter stringFromDate:dato];
    cell.klokke.text = time;
}
if(section == 2){
    Program *p =[ten objectAtIndex:row];
    cell.primaryTitle.text = p.title;
    cell.primaryTitle.textColor = [UIColor blueColor];
    Scene *s = p.scene;
    cell.secondaryTitle.text = s.name;
    NSDate *dato = p.tidspunkt;

    NSString *time = [formatter stringFromDate:dato];
    cell.klokke.text = time;
}
if(section == 3){
    Program *p =[eleven objectAtIndex:row];
    cell.primaryTitle.text = p.title;
    cell.primaryTitle.textColor = [UIColor blueColor];
    Scene *s = p.scene;
    cell.secondaryTitle.text = s.name;
    NSDate *dato = p.tidspunkt;

    NSString *time = [formatter stringFromDate:dato];
    cell.klokke.text = time;
}
if(section == 4){
    Program *p =[twelve objectAtIndex:row];
    cell.primaryTitle.text = p.title;
    cell.primaryTitle.textColor = [UIColor blueColor];
    Scene *s = p.scene;
    cell.secondaryTitle.text = s.name;
    NSDate *dato = p.tidspunkt;

    NSString *time = [formatter stringFromDate:dato];
    cell.klokke.text = time;
}
if(section == 5){
    Program *p =[thirteen objectAtIndex:row];
    cell.primaryTitle.text = p.title;
    cell.primaryTitle.textColor = [UIColor blueColor];
    Scene *s = p.scene;
    cell.secondaryTitle.text = s.name;
    NSDate *dato = p.tidspunkt;

    NSString *time = [formatter stringFromDate:dato];
    cell.klokke.text = time;
}
if(section == 6){
    Program *p =[fourteen objectAtIndex:row];
    cell.primaryTitle.text = p.title;
    cell.primaryTitle.textColor = [UIColor blueColor];
    Scene *s = p.scene;
    cell.secondaryTitle.text = s.name;
    NSDate *dato = p.tidspunkt;

    NSString *time = [formatter stringFromDate:dato];
    cell.klokke.text = time;
}
if(section == 7){
    Program *p =[fifthteen objectAtIndex:row];
    cell.primaryTitle.text = p.title;
    cell.primaryTitle.textColor = [UIColor blueColor];
    Scene *s = p.scene;
    cell.secondaryTitle.text = s.name;
    NSDate *dato = p.tidspunkt;

    NSString *time = [formatter stringFromDate:dato];
    cell.klokke.text = time;
}
if(section == 8){

    Program *p =[sixteen objectAtIndex:row];
    cell.primaryTitle.text = p.title;
    cell.primaryTitle.textColor = [UIColor blueColor];
    Scene *s = p.scene;
    cell.secondaryTitle.text = s.name;
    NSDate *dato = p.tidspunkt;

    NSString *time = [formatter stringFromDate:dato];
    cell.klokke.text = time;
}
if(section == 9){
    Program *p =[seventeen objectAtIndex:row];
    cell.primaryTitle.text = p.title;
    cell.primaryTitle.textColor = [UIColor blueColor];
    Scene *s = p.scene;
    cell.secondaryTitle.text = s.name;
    NSDate *dato = p.tidspunkt;

    NSString *time = [formatter stringFromDate:dato];
    cell.klokke.text = time;
}
[formatter release];
return cell;
}

Where eight, nine, ten … are NSArrays that is initiated in viewdidLoad and released in dealloc.

Answer 1

I found it out by my self. When I am closing the overlaying viewcontroller, I have to reload the data of the tableview. It was not a problem of any array or deleting any object.
Like

[myTable reloadData];