今天做项目出现这个问题：

fatal error: file ‘/Users/kuaileyizhan/Desktop/saving/*****/****/JYOAData.h‘ has been modified since the precompiled header was built 

(原因：预编译头的时候文件被修改)；

 解决方法：1.Select Product > Clean from the Xcode menu

IOS开发xcode报错之has been modified since the precompiled header was built