objective-c - 如何访问呈现模态视图的 UIViewController 类/类名？

Question

一个简单的问题

目前我呈现这样的模态视图:

+ (void)showModalController:(id)ContentController InViewController:(UIViewController*)vc withFrame:(CGRect)rect{

UINavigationController *modalViewNavController = [[UINavigationController alloc] initWithRootViewController:ContentController];
modalViewNavController.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
modalViewNavController.modalPresentationStyle = UIModalPresentationFormSheet;

[vc presentModalViewController:modalViewNavController animated:YES];

//it's important to do this after presentModalViewController
modalViewNavController.view.superview.frame = rect;

//self.view assumes the base view is doing the launching, if not you might need self.view.superview.center etc.
modalViewNavController.view.superview.center = vc.view.center;

[modalViewNavController release];

}

我传递了将以自定义模式大小呈现的 UIViewController 内容的值。我还将 UIViewController 的值传递给将呈现模式的位置。

就代码而言，我想知道内容类中的“vc”名称(如果可以的话)。

编辑

假设我有 2 个类，其中一个称为 DetailViewController，其中将呈现模式。另一个称为ModalContentViewController。

我想知道 ModalContentViewController 类(当 View 出现或加载时)DetailViewController 的名称。

有什么想法吗？

PD:当前使用...

XCode 4.4.1 iPad模拟器iOS5.1 iOS5.1

Answer 1

查找UIViewController属性presentingViewController。以下是文档中的引用:

If the view controller that received this message is presented by another view controller, this property holds the view controller that is presenting it. If the view controller is not presented, but one of its ancestors is being presented, this property holds the view controller presenting the nearest ancestor. If neither the view controller nor any of its ancestors are being presented, this property holds nil.

因此您可以使用该属性来获取当前 VC 的名称。