Cocoa CoreData 和非基于文档的应用程序

发布于 2024-09-10 07:06:17 字数 1173 浏览 4 评论 0原文

我有一个让我发疯的问题...... 我想“编写”一个 Cocoa CoreData 应用程序，“写”不是确切的术语，因为应用程序应该使用绑定创建。

创建基于文档的应用程序没有问题，它工作得很好。但我想要一个非基于文档的应用程序，所以我想“像在基于文档的应用程序中一样”，但如果我这样做，应用程序就不会启动。 XCodes 的 GDB 说：

2010-07-14 11:02:39.894 nonDocBased[1242:a0f] An uncaught exception was raised
2010-07-14 11:02:39.899 nonDocBased[1242:a0f] [<NSApplication 0x100408e90> valueForUndefinedKey:]: this class is not key value coding-compliant for the key managedObjectContext.
2010-07-14 11:02:39.902 nonDocBased[1242:a0f] *** Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<NSApplication 0x100408e90> valueForUndefinedKey:]: this class is not key value coding-compliant for the key managedObjectContext.'

所以我用谷歌搜索了这个，但没有发现任何有用的东西（或者可能我太缺乏经验了......）。但我找到了一个教程（http://www.raywenderlich.com/ 934/core-data-tutorial-getting-started）并在没有绑定的情况下尝试过，但这都不起作用。

所以我的问题是如何使用核心数据创建非基于文档的应用程序？

这是我的代码，密码是stackoverflow。

感谢您的任何想法... 丹尼斯

原文

i have a Problem wich drives me crazy...
I want to "write" a Cocoa CoreData Application, write is not the exact term, because the Application should be created with Bindings.

It was no Problem to create a Document-Based Application, it works fine.
But i want a Non-Document-Based Application, so I thought "Do the same like at the Document-Based App", but if I do so the Application do not start. XCodes' GDB says:

2010-07-14 11:02:39.894 nonDocBased[1242:a0f] An uncaught exception was raised
2010-07-14 11:02:39.899 nonDocBased[1242:a0f] [<NSApplication 0x100408e90> valueForUndefinedKey:]: this class is not key value coding-compliant for the key managedObjectContext.
2010-07-14 11:02:39.902 nonDocBased[1242:a0f] *** Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<NSApplication 0x100408e90> valueForUndefinedKey:]: this class is not key value coding-compliant for the key managedObjectContext.'

So I googled on this, but found nothing helpful (or probably I was just too unexperienced... ).
But I found a Tutorial (http://www.raywenderlich.com/934/core-data-tutorial-getting-started) and tried it without Bindings but this neither works.

So my Question is how do I create a Non-Document-Based Application using Core Data?

Here's my Code, the Password is stackoverflow.

Thanks for any Ideas...
Dennis

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