- (UIViewController *)viewController {
  for (UIView* next = [self superview]; next; next = next.superview) {
    UIResponder *nextResponder = [next nextResponder];
    if ([nextResponder isKindOfClass:[UIViewController class]]) {
      return (UIViewController *)nextResponder;
    }
  }
  return nil;
}

-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
  qunzuDetailViewController *qc=[[qunzuDetailViewController alloc]initWithNibName:@"qunzuDetailViewController" bundle:[NSBundle mainBundle]];
  [[self viewController]presentViewController:qc animated:YES completion:nil];
}