在项目中添加AFNetworking框架时出错

Question

在项目中添加AFNetworking框架我收到以下错误： -

Undefined symbols for architecture i386:
  "_UTTypeCopyPreferredTagWithClass", referenced from:
      _AFContentTypeForPathExtension in AFURLRequestSerialization.o
  "_UTTypeCreatePreferredIdentifierForTag", referenced from:
      _AFContentTypeForPathExtension in AFURLRequestSerialization.o
  "_kUTTagClassFilenameExtension", referenced from:
      _AFContentTypeForPathExtension in AFURLRequestSerialization.o
  "_kUTTagClassMIMEType", referenced from:
      _AFContentTypeForPathExtension in AFURLRequestSerialization.o
ld: symbol(s) not found for architecture i386
clang: error: linker command failed with exit code 1 (use -v to see invocation)

我正在使用xd 4.5与sdk iOS 6.0

Answer 1

在项目中添加以下框架：

MobileCoreServices.framework
SystemConfiguration.framework