是否有可能以编程方式从Swift / Objective-C中的UIViewController或Storyboard获取基本UIViewController的标识符？ [英] Is it possible to programmatically get the identifier of a basic UIViewController from an UIViewController or Storyboard in Swift/Objective-C?

问题描述

我知道我们可以根据其标识符实例化一个特定的UIViewController（见下文）：

I know that we can instantiate a particular UIViewController basing on its identifier (see below):

var myPageContentViewController = self.storyboard!.instantiateViewControllerWithIdentifier("A") as PageContentViewController

但我的问题与此无关，换句话说，我只想知道是否有可能以编程方式（在源代码中）检索我在故事板中为这个特定的PageContentViewController设置的标识符（在我们的例子中是字符串值A）（这是一个我项目中UIViewController的子类）？

But my question doesn't concern that point, in other words I just would like to know if it would be possible to programmatically (in the source code) retrieve the identifier (in our case the string value "A") that I set in the storyboard for this particular PageContentViewController (which is a subclass of UIViewController in my project)?

注意：使用Swift开发语言而不是Objective-C开发语言的答案对我来说会更方便，即使我知道后者。为了您的信息，我使用Xcode的6.0.1版本。

Note: an answer using the Swift development language instead of the Objective-C development language would be more convenient for me, even if I know the latter. For your information, I use the 6.0.1 version of Xcode.

提前感谢您的答案。

推荐答案

在Swift中：

 var str: String! = self.restorationIdentifier

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