选择时，在CollectionViewCell上显示/隐藏子视图？

Question

我想在UICollectionView上显示一个勾选图标，当取消选择时选择并隐藏它，或者选择第五个单元格！ 现在我只能选择一个单元格，如果我选择下一个单元格，第一个单元格上的勾号图标将被隐藏！当我选择第5个单元格时，我想隐藏第一个单元格上的刻度图标，这意味着我一次最多可以选择5个框。

- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath {
      NSMutableArray *indexPaths = [NSMutableArray arrayWithObject:indexPath];

    if (self.selectedItemIndexPath) {
        if ([indexPath compare:self.selectedItemIndexPath] == NSOrderedSame) {
            self.selectedItemIndexPath = nil;
        } else {
            [indexPaths addObject:self.selectedItemIndexPath];
            self.selectedItemIndexPath = indexPath;
        }
    } else {
        self.selectedItemIndexPath = indexPath;
    }

    [collectionView reloadItemsAtIndexPaths:indexPaths];
}

- (UICollectionViewCell *)collectionView:(UICollectionView *)cv cellForItemAtIndexPath:(NSIndexPath *)indexPath {
    if (self.selectedItemIndexPath != nil && [indexPath compare:self.selectedItemIndexPath] == NSOrderedSame) {
        [cell.tickPhoto setHidden:FALSE];
    } else {
        [cell.tickPhoto setHidden:TRUE];
    }

    return cell;
}