故事板不包含标识为"MainWindow"的控制器 [英] Storyboard doesn't contain a controller with identifier 'MainWindow'

问题描述

我正在尝试从OS X应用程序中的情节提要中实例化NSWindowController:

I am trying to instantiate an NSWindowController from a storyboard in my OS X app:

NSWindowController *mainWindowController = [[NSStoryboard storyboardWithName:@"Main" bundle:nil] instantiateControllerWithIdentifier:@"MainWindow"];

但这就是我得到的:

Storyboard (<NSStoryboard: 0x618000008500>) doesn't contain a controller with identifier 'MainWindow'.

但在情节提要中:

已设置.不，没有其他情节提要.是的，我已经尝试清理项目和构建文件夹，但是没有任何变化.

It is set. No, there are no other storyboards. Yes, I've tried cleaning the project and the build folder, but nothing changes.

为什么会出现此错误?

更新:我正在构建我的应用，回到情节提要，但我看到情节提要ID尚未设置:

UPDATE: I am building my app, coming back to the storyboard, and I see that Storyboard ID is unset:

如何自动取消情节提要ID?

How can Storyboard ID get unset by itself?

推荐答案

这肯定是Xcode的错误.重新启动Xcode解决了该问题.

It was definitely a bug with Xcode. Restarting Xcode solved the problem.

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