我训练使用 MFMailComposeViewController 为 iPhone 创建程序。但是编译的时候会报错:
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?以及如何解决?
提前致谢!