- (UINavigationController*)naviController {

    for (UIView* next = [self superview]; next; next = next.superview) {

        UIResponder* nextResponder = [next nextResponder];

        if ([nextResponder isKindOfClass:[UINavigationController class]]) {

            return (UINavigationController*)nextResponder;

        }

    }

    return nil;

}

- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath {

    myViewController *vc = [[myViewController alloc]init];

    [[self naviController] presentViewController:vc animated:YES completion:nil];

}