一不小心修改了系统的头文件解决方案

来源：互联网发布：阿玛尼手表淘宝编辑：程序博客网时间：2024/05/17 07:59

转载地址 http://blog.csdn.net/iosdevtip/article/details/23696035

fatal error: file '/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator7.1.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSArray.h' has been modified since the precompiled header '/Users/ligang/Library/Developer/Xcode/DerivedData/ModuleCache/1O5WP9283VGUA/Foundation.pcm' was built

note: after modifying system headers, please delete the module cache at '/Users/ligang/Library/Developer/Xcode/DerivedData/ModuleCache/1O5WP9283VGUA'

1 error generated.

解决办法：前往 '/Users/ligang/Library/Developer/Xcode/DerivedData/ModuleCache/1O5WP9283VGUA 这个文件夹，删除其文件夹中的内容，然后运行app，没问题了，注意不是删除 2NEVAP7X943D2 文件夹，而是其中的内容。然后再 clean下项目就可以了（product -> clean）

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