我使用MFMailComposeViewController来创建iPhone应用程序,但是编译时出现错误:
Undefined symbols for architecture i386:
"_OBJC_CLASS_ $ _MFMailComposeViewController", Referenced from:
objc-class-ref in ViewController.o
ld: symbol (s) not found for architecture i386
clang: error: linker command failed with exit code 1 (use-v to see invocation)
请帮忙,这是什么问题?如何修复?
先感谢您的帮助!