http://www.cnblogs.com/gongyuhonglou/p/5801681.html

http://blog.csdn.net/iunion/article/details/17010267

如果找不到头文件的时候

选择Target -> Build Settings 菜单，找到\”User Header Search Paths\”设置项
新增一个值"${SRCROOT}"，并且选择\”Recursive\”