XCode 4.5.1，应用程序窗口应在应用程序启动结束时具有根视图控制器 [英] XCode 4.5.1, Application windows are expected to have a root view controller at the end of application launch

问题描述

我已将 XCode 升级为 4.5.1 ，以便使用<$在我的新iPad中进行调试c $ c> IOS 6.0.1 。
之后我在编译后在控制台上遇到这个错误：

I've upgraded my XCode to 4.5.1 in order to debug in my new iPad with IOS 6.0.1. After that I get this error on console after compiling:

应用程序窗口最后会有一个根视图控制器应用程序启动

Application windows are expected to have a root view controller at the end of application launch

我的应用程序进入与主屏幕不同的屏幕，按钮根本不起作用。

And my application enters in a screen different from the main and the buttons do not work at all.

在旧版本的 XCode 中，它可以作为魅力。

In the older version of XCode it worked as a charm.

有关正在发生的事情的任何想法？

Any ideas of what is happening?

在应用代表我有这个：

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {    

    // Override point for customization after application launch.

    // Add the view controller's view to the window and display.


    [self.window addSubview:viewController.view];

    [self.window makeKeyAndVisible];

    return YES;
}

只是为了更新，我能得到的唯一方法我的应用程序再次删除Xcode 4.5.1并返回到Xcode 4.4.1。 .xib文件中似乎存在问题，并且界面构建器无法正确链接最新版本中的对象。我不知道为什么

Just to update, the only way I could get my app again was to delete Xcode 4.5.1 and go back to Xcode 4.4.1. There seems to be a problem in the .xib file and interface builder cannot link properly the objects in the newest versions. I don't know why

一个有趣的事实，在我更新XCode之前我无法使用ios 6.0在ipad上运行我的应用程序.1（我正在为IOS 5.1编译）
降级后它可以工作。

A funny fact, before I updated the XCode i could not run my app on the ipad with ios 6.0.1(I was compiling for IOS 5.1) After the downgrade it works.

推荐答案

转到AppDelegate类并且添加：

Go to AppDelegate class and add:

self.window.rootViewController = self.viewController;

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