常见运行错误

1、错误： "OBJC_CLASS$_CurriculumViewController",
referenced from: objc-class-ref in
ProfileViewContro

原因：删除了 .m文件

2.[__NSCFNumber rangeOfCharacterFromSet:]: unrecognized selector sent to instance 0xb0000000000031a3

原因：参数类型错误

3.[NSConcreteMutableData wbsdk_base64EncodedString]: unrecognized selector sent to instance 0x7fd1097a

解决方法：Build Setting 的Other Linker Flags中添加-ObjC。