UINavigationController到UIViewController的困难

Question

如何将其转换为UIViewController是否可行：

for (UIViewController *tmpController  in [self.navigationController viewControllers]) 
{
    if ([tmpController isKindOfClass:[RootViewController class]])
    {
        [self.navigationController popToViewController:tmpController animated:YES];
        break;
    }
}

[self.navigationController viewControllers] ->如何将其转换为UIViewController ，因为出现错误，

[self.navigationController popToViewController:tmpController animated:YES]; ->虽然这部分我将其转换为-> [self dismissModalViewControllerAnimated:YES];

Answer 1

如果您有提供了ViewController B的ViewController A以及提供了ViewController C的ViewController B

您想回到A，在viewController C中执行以下操作

[self dismissModalViewControllerAnimated:NO];
[[self presentingViewController] dismissModalViewControllerAnimated:NO];

Answer 2

您可以按如下方式获取视图层次结构：

for(UIView *view in [self.view subviews])

Answer 3

从上面的评论中，我觉得您正在介绍从A到B以及从B到C的控制器。

现在，您想使用以下代码从C到A进行操作

[self.navigationController popToRootViewControllerAnimated:YES];

编辑

//Try this.
[[[self parentViewController] parentViewController] dismissModalViewControllerAnimated:YES];