我使用MFMailComposeViewController爲iPhone創建程序進行培訓。但編譯時出現錯誤:
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)
請幫忙,這是什麼?以及如何解決它?
在此先感謝!
可能重複[無法編譯代碼時使用CALayer](http://stackoverflow.com/questions/2968071/cant-compile-code-when-working-with-calayer) – 2012-05-31 19:10:11