向后兼容应用程序中的 OS 4.0 功能

发布于 2024-09-16 17:23:14 字数 461 浏览 10 评论 0原文

我有一个 OS 4 应用程序，在我添加 eventkit 之前它与 3.x 完全兼容。如果它们位于 3.x 设备上，有没有办法可以忽略此功能？我有

#if __IPHONE_OS_VERSION_MAX_ALLOWED >= 40000
...code
#endif

我的东西，但它似乎在初次启动时失败，我想这是由于 EventKit.framework 的链接所致。我遇到的唯一错误是超级描述性

Data Formatters temporarily unavailable, will re-try after a 'continue'. (Cannot call into the loader at present, it is locked.)

，如果我删除这个框架并注释掉我的 eventkit 代码，一切都会正常。是否没有办法阻止旧操作系统链接新框架？

原文

I have an OS 4 app that was completely compatible with 3.x up until I added eventkit. Is there a way I can omit this feature if they are on a 3.x device? I have

#if __IPHONE_OS_VERSION_MAX_ALLOWED >= 40000
...code
#endif

around my stuff but it seems to be failing on initial launch and I am thinking due to the linking of the EventKit.framework. The only error i am getting is the super descriptive

Data Formatters temporarily unavailable, will re-try after a 'continue'. (Cannot call into the loader at present, it is locked.)

and if i remove this framework and comment out my eventkit code, it all works fine. Is there no way to prevent the linking of newer frameworks for older OS'?

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