关闭呈现的视图控制器后推送视图控制器

我有这个导航堆栈

RootVC ---> VC1 --> (呈现)-> ModalVC

我有VC2（不在导航堆栈中）。

演示时ModalVC，我想单击 ModalVC 中的按钮来关闭 ModalVC，然后推送VC2之后进入导航堆栈VC1一键点击。它应该看起来像这样：

根VC ---> VC1 ---> VC2

我尝试了很多方法来做到这一点，但只有当我返回到我的状态时才推动事件触发RootVC.

我试图与代表们一起做到这一点：

In ModalVC点击时：

[self dismissViewControllerAnimated:YES completion:^{
   if ([self.delegate respondsToSelector:@selector(dismissAndPush:)]) {
       [self.delegate performSelector:@selector(dismissAndPush:) withObject:VC2];
   }
}];

In VC1:

- (void)dismissAndPush:(UIViewController *)vc {
    [self.navigationController pushViewController:vc animated:NO];

}

请帮助理解这种行为。我的错误在哪里？

From 苹果文档 https://developer.apple.com/library/ios/documentation/UIKit/Reference/UIViewController_Class/index.html#//apple_ref/occ/instm/UIViewController/dismissViewControllerAnimated:completion::

呈现视图控制器负责关闭视图 它提出了控制器。

所以，VC1应该解雇ModalVC，尝试这样做

单击时的 ModalVC：

   if ([self.delegate respondsToSelector:@selector(dismissAndPush:)]) {
       [self.delegate performSelector:@selector(dismissAndPush:) withObject:VC2];
   }

In VC1:

- (void)dismissAndPush:(UIViewController *)vc {

[self dismissViewControllerAnimated:YES completion:^{
    [self.navigationController pushViewController:vc animated:NO];
}];

}