In the following code:
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView
cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
UICollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:@"Cell" forIndexPath:indexPath];
UILabel *label = (UILabel *)[cell viewWithTag:1];
Person *person = [self.fetchedResultsController objectAtIndexPath:indexPath];
label.text = person.fullName;
UIImageView *iv = (UIImageView *)[cell viewWithTag:2];
NSPredicate *pr = [NSPredicate predicateWithFormat:@"person == %@", person];
Image *image = [Image MR_findFirstWithPredicate:pr inContext:person.managedObjectContext];
iv.image = image.image ? image.image : [UIImage imageNamed:@"placeholder"];
return cell;
}
This line
Image *image = [Image MR_findFirstWithPredicate:pr inContext:person.managedObjectContext];
is using illegal context.
I tried to use local context instead of person.managedObjectContext
, but it still illegal.
Any thoughts?
Why are you doing this at all? It looks like a Person object has an Image relationship. Just use:
imageView.image = person.image ?: [UIImage imageNamed:@"default"];
No need to do more fetches that will just make the code harder to read and also slow down your app.