CollectionCellForRow

- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
    NSString *identifier = @"_collection_view_cell_identifier";

    UICollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:identifier forIndexPath:indexPath];
    if (!cell) {
        cell = [[UICollectionViewCell alloc] initWithFrame:CGRectMake(0, 0, 48, 48)];
    }
    
    return cell;
}