如何在不使用导航栏的情况下将控制器从导航堆栈中弹出 [英] how to pop a controller off the navigation stack without using the navigation bar

问题描述

我正在尝试使用一些分层视图来实现导航控制器.我想使用常规的UIViewController来显示向下钻取的选项，不想使用导航栏-我想拥有自己的自定义按钮来返回上一级.

I'm trying to implement a navigation controller with some hierarchical views. I want to use a regular UIViewController to present choices for drilling down, I don't want to use the navigation bar - I want to have my own, custom buttons for returning back up a level.

我看到类似的例子:

[[self navigationController] pushViewController:nextViewController animated:YES];

和我的问题是:navigationController是所有UIViewControllers的属性吗?不管堆栈上的视图如何，我都可以引用self.navigationController吗?如果我处于任意视图，我可以进行包含[self.navigationController popToRootViewController animated:YES];

and my questions are these: Is navigationController a property of all UIViewControllers? Can I refer to self.navigationController regardless of the view that's on the stack? If I'm at an arbitrary view, can I have a button action that contains something like [self.navigationController popToRootViewController animated:YES];

根据情况，我呈现的每个视图都需要一个按钮以返回到上一个视图或根视图.我想在每个视图控制器中创建该按钮，并控制它返回到堆栈中的哪个视图.我在正确的轨道上吗?

Each view I present will need a button to return to the previous view, or to the root view, depending on the situation. I want to create that button in each view controller and control which view in the stack it returns to. Am I on the right track?

推荐答案

navigationController是否是所有UIViewControllers的属性?

Is navigationController a property of all UIViewControllers?

是的

无论堆栈上的视图如何，我都可以引用self.navigationController吗?

Can I refer to self.navigationController regardless of the view that's on the stack?

UINavigationController堆栈上的每个UIViewController都将在调用navigationController时返回UINavigationController对象.

Every UIViewController on the UINavigationController's stack will return the UINavigationController object when calling navigationController on it.

如果我处于任意视图，我可以进行包含[self.navigationController popToRootViewControllerAnimated:YES];

是的. popToRootViewControllerAnimated:会将用户带到UINavigationController的根UIViewController，您可以使用[self.navigationController popViewControllerAnimated:YES];弹出顶部的UIViewController.最后一个与点击Back UIBarButtonItem相同.

Yes. popToRootViewControllerAnimated: will take the user to the root UIViewController for the UINavigationController, and you can use [self.navigationController popViewControllerAnimated:YES]; to just pop off the top UIViewController. This last one does the same as tapping the Back UIBarButtonItem.

我在正确的轨道上吗?

Am I on the right track?

是:)

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