UINavigationController到UIViewController的难度

Question

如何为UIViewController转换此内容是可能的：

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

[self.navigationController viewControllers] - ＆gt;如何为UIViewController转换此内容，因为我遇到了错误，

[self.navigationController popToViewController:tmpController animated:YES]; - ＆gt;而这部分我把它转换成这个 - ＆gt; [self dismissModalViewControllerAnimated:YES];

Answer 1

如果您有ViewController A，它提供了呈现ViewController C的ViewController B

你想回到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你呈现的控制器如从A到B和从B到C。

现在你想要从C到A来做那个使用下面的代码

[self.navigationController popToRootViewControllerAnimated:YES];

修改

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