在xcode 4中使用UIModalTransitionStylePartialCurl导航时，在ios设备上崩溃 [英] crashing on ios device while navigation using UIModalTransitionStylePartialCurl in xcode 4

问题描述

我在ios 4设备上使用UIModalTransitionStylePartialCurl，在我的测试应用程序中，我有2个类，每个类中的单个按钮，在第一页onclick的按钮，它无法导航到第2页（通过卷曲页面向上），但在第二页，当我点击backbutton其崩溃，但不导航回我的第一页
以下是我的代码用于导航

i am using UIModalTransitionStylePartialCurl on the ios 4 device,in my test app i have 2 classes where a single button in each class, in first page onclick of the button it ill navigate to 2nd page (by curling the page up) but in the 2nd page when i click backbutton its crashing but not navigating back to my first page following is my code used for navigation

ViewController *MainWin = [[QIAViewController alloc] initWithNibName:NULL bundle:NULL];
    MainWin.modalTransitionStyle = UIModalTransitionStylePartialCurl;
    [self presentModalViewController:MainWin animated:YES];
    [MainWin release];

这是崩溃日志：

 *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'Application tried to present a nested modal view controller while curled <QIAAdminPassCnf: 0x583e040>.'
*** Call stack at first throw:

推荐答案

文档 UIModalTransitionStylePartialCurl ，您将看到一旦使用它，您就无法再显示任何模式视图。

If you read the documentation for UIModalTransitionStylePartialCurl, you will see that once you've used it you can't present any more modal views.

如果你想返回，我想你应该做，

If you want to navigate back, I think you should do,

 [self dismissModalViewControllerAnimated:YES];

而不是创建新的视图控制器实例。

rather than creating a new view controller instance.

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