所以今天我遇到了一个大问题。我在xcode 4.3.2上遇到涉及我的viewcontroller的问题，如以下错误消息所示:
Undefined symbols for architecture i386: "_OBJC_CLASS_$_SecondViewController",
referenced from: objc-class-ref in Birdflix_ProViewController.o "_OBJC_CLASS_$_ThirdViewController",
referenced from: objc-class-ref in Birdflix_ProViewController.o "_OBJC_CLASS_$_FourthViewController",
referenced from: objc-class-ref in Birdflix_ProViewController.o "_OBJC_CLASS_$_Author",
referenced from: objc-class-ref in Birdflix_ProViewController.o
ld: symbol(s) not found for architecture i386 clang: error: linker command failed with exit code 1 (use -v to see invocation)
我注意到这些错误仅在我编写将Viewcontroller链接到其他类的IBAction时出现。如果删除IBAction，错误将消失。任何帮助表示赞赏。
最佳答案
终于找到答案了。在目标设置中，找到构建阶段并导航到编译源。一旦出现，只需将.m文件添加到错误列表中即可。
关于ios - “_OBJC_CLASS_$_”，从: error in xcode 4. 3.2引用，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/10302522/