Should we point to an NSManagedObject entity with weak instead of strong pointer?
- by Jim Thio
I think because NSManagedObject is managed by the managedObject context the pointer should be weak.
Yet it often goes back to 0 in my cases.
for (CategoryNearby * CN in sorted) {
//[arrayOfItems addObject:[NSString stringWithFormat:@"%@ - %d",CN.name,[CN.order intValue]]];
NearbyShortcutTVC * tvc=[[NearbyShortcutTVC alloc]init];
tvc.categoryNearby =CN;
// tvc.titleString=[NSString stringWithFormat:@"%@",CN.name];
// tvc.displayed=CN.displayed;
[arrayOfItemsLocal addObject:tvc];
//CN
PO(tvc);
PO(tvc.categoryNearby);
while (false);
}
self.arrayOfItems = arrayOfItemsLocal;
PO(self.categoriesNearbyInArrayOfItems);
[self.tableViewa reloadData];
...
Yet somewhere down the line:
tvc.categoryNearby becomes nil.
I do not know how or when or where it become nil.
How do I debug this? Or should the reference be strong instead?
This is the interface of NearbyShortcutTVC by the way
@interface NearbyShortcutTVC : BGBaseTableViewCell{
}
@property (weak, nonatomic) CategoryNearby * categoryNearby;
@end
To make sure that we're talking about the same object I print all the memory addresses of the NSArray
They're both the exact same object. But somehow the categoryNearby property of the object is magically set to null somewhere.
self.categoriesNearbyInArrayOfItems: (
0x883bfe0,
0x8b6d420,
0x8b6f9f0,
0x8b71de0,
0xb073f90,
0xb061a10,
0xb06a880,
0x8b74940,
0x8b77110,
0x8b794e0,
0x8b7bf40,
0x8b7cef0,
0x8b7f4b0,
0x8b81a30,
0x88622d0,
0x8864e60,
0xb05c9a0
)
self.categoriesNearbyInArrayOfItems: (
0x883bfe0,
0x8b6d420,
0x8b6f9f0,
0x8b71de0,
0xb073f90,
0xb061a10,
0xb06a880,
0x8b74940,
0x8b77110,
0x8b794e0,
0x8b7bf40,
0x8b7cef0,
0x8b7f4b0,
0x8b81a30,
0x88622d0,
0x8864e60,
0xb05c9a0
)
