application windows are expected to have a root view controller

最新推荐文章于 2017-08-29 11:41:47 发布
最新推荐文章于 2017-08-29 11:41:47 发布
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分类专栏： IOS开发 文章标签： iOS
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本文链接：https://blog.youkuaiyun.com/wxw55/article/details/51673042
本文探讨了iOS应用程序中出现的一种常见崩溃情况，即当applicationwindows期待拥有一个rootviewcontroller时出现的问题。文中指出了两种可能导致此问题的原因：一是不当使用setrootviewcontroller设置根视图控制器；二是设置rootcontroller后没有立即返回YES。此外，还特别提到了在didFinishLaunchingWithOptions中执行异步请求并尝试根据请求结果设置不同根视图的情况可能会导致应用崩溃。

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application windows are expected to have a root view controller，奔溃，可能原因：1不能用setrootviewcontroller设置根目录，2在设置rootcontroller后，必须紧跟return yes，请注意，或许会有某些自动登录在didFinishLaunchingWithOptions里进行，根据请求成功与失败设置不同的根目录，这样是行不通的，因为你在进行异步请求时，就执行了return 语句，此时就报错，除非是同步，你懂得。
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http://stackoverflow.com/questions/30884896/application-windows-are-expected-to-have-a-root-view-controller-at-the-end-of-a “Application windows are expected to have a root view controlle
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原因:出现的原因一般是运行时未给 self.window的 rootViewController的对象分配内存造成的，如下面类似例子         NSArray *item = [NSArray arrayWithObjects:nc1, nil]; _tabBar.tabBar.backgroundImage = [UIImage imageNamed:@"tabbar
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xu 产生这个提示的操作：在xcode4.6中创建一个名字为appTest空工程，create一个ios-application-empty application，直接编译运行 错误提示：虽然编译通过，也能运行，但是底下有错误提示“application windows are expected to have a root view controller”
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基于Xcode4.2解决Applications are expected to have a root view controller at the end of application launch 和建立MainWindow教程代码 对应图文教程： http://blog.youkuaiyun.com/abowu/article/details/7533026
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- 避免调用 `exit(0)`，否则可能导致 App Store 审核拒绝或错误 "Application windows are expected to have a root view controller"[^5]。 - 使用 `UIApplication.shared.perform(#selector(NSXPCConnection....
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Application windows are expected to have a root view controller at the end of appliaction launch.
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更多精彩内容，请见：http://www.16boke.com 这个警告是新版XCode和ios6中出现的，解决方法是加一句[self.window setRootViewController:rootController]; - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { …………
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