“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". Xcode 7，iOS 9运行项目时出现错误 [英] "Application windows are expected to have a root view controller at the end of application launch" error when running a project with Xcode 7, iOS 9

问题描述

运行后功能

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

发生崩溃:

 Assertion failure in 
-[UIApplication _runWithMainScene:transitionContext:completion:], /BuildRoot/Library/Caches/com.apple.xbs/Sources/UIKit_Sim/UIKit-

 *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', `enter code here`reason: 'Application windows are expected to have a root view controller at the end of application launch'
*** First throw call stack:
(
    0   CoreFoundation                      0x0000000109377885 __exceptionPreprocess + 165
    1   libobjc.A.dylib                     0x0000000108df0df1 objc_exception_throw + 48
    2   CoreFoundation                      0x00000001093776ea +[NSException raise:format:arguments:] + 106
    3   Foundation                          0x0000000108a42bb1 -[NSAssertionHandler handleFailureInMethod:object:file:lineNumber:description:] + 198
    4   UIKit                               0x000000010760e350 -[UIApplication _runWithMainScene:transitionContext:completion:] + 2875
    5   UIKit                               0x000000010760b73f -[UIApplication workspaceDidEndTransaction:] + 188
    6   FrontBoardServices                  0x000000010b87fd7b FrontBoardServices + 163195
    7   FrontBoardServices                  0x000000010b880118 FrontBoardServices + 164120
    8   CoreFoundation                      0x00000001092a20f1 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
    9   CoreFoundation                      0x0000000109297eac __CFRunLoopDoSources0 + 556
    10  CoreFoundation                      0x0000000109297363 __CFRunLoopRun + 867
    11  CoreFoundation                      0x0000000109296d78 CFRunLoopRunSpecific + 488
    12  UIKit                               0x000000010760b091 -[UIApplication _run] + 402
    13  UIKit                               0x000000010760f79b UIApplicationMain + 171
    14  bbwc                                0x00000001037a9998 main + 344
    15  libdyld.dylib                       0x000000010a45ca05 libdyld.dylib + 10757
    16  ???                                 0x0000000000000001 0x0 + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException

该项目是一个旧项目，我该怎么做才能使其在Xcode 7和iOS 9上构建并运行?

This project is an old project, what should I do to make it build and run with Xcode 7 and iOS 9?

推荐答案

来自您的错误消息:

应用程序窗口预期在应用程序启动结束时具有一个根视图控制器

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

这个旧"项目几岁了?如果已经超过几年了，您还有:

How old is this "old" project? If it's more than a few years, do you still have:

[window addSubview:viewController.view];

您应该改为:

[window setRootViewController:viewController];

这篇关于“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". Xcode 7，iOS 9运行项目时出现错误的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！