1.Create a pch , call name is project+xxx.pch
For example: DuoME-PrefixHeader.pch
2.在project——》Build Settings——》search Prefix Header ——》 把Precompile Prefix Header 设为Yes——》然后在Prefix Header 填写$(SRCROOT)/项目名/xxx.pch
1.Create a pch , call name is project+xxx.pch
For example: DuoME-PrefixHeader.pch
2.在project——》Build Settings——》search Prefix Header ——》 把Precompile Prefix Header 设为Yes——》然后在Prefix Header 填写$(SRCROOT)/项目名/xxx.pch