addSubView 添加一个tableView，不能正常滚动

Question

代码：

- (void)viewDidLoad
{
  [super viewDidLoad];
    // Do any additional setup after loading the view.
  groupViewController = [GroupViewController groupTableViewControllerWithDataSource:[GroupDataSource instance]
                                                                              Delegate:self];

  [self addChildViewController:groupViewController];
  [_groupView addSubview:groupViewController.view];
}

症状：
成功添加并显示，但tableView 无法滚动到底。怀疑是布局的问题，求教。

Answer 1

这里要重新设置frame的

- (void)addChild:(UIViewController *)childToAdd withChildToRemove:(UIViewController *)childToRemove
{
    assert(childToAdd != nil);

    if (childToRemove != nil)
    {
        [childToRemove.view removeFromSuperview];
    }
    CGRect frame = childToAdd.view.frame;
    frame.size.height = CGRectGetHeight(self.placeHoderView.frame);
    frame.size.width = CGRectGetWidth(self.placeHoderView.frame);
    childToAdd.view.frame = frame;
    self.currentVC = childToAdd;
    [self.placeHoderView addSubview:childToAdd.view];
}