嗨,我用 Xcode 创建了我的第一个应用程序,并且我已经将大量内容导入到我的项目中,因此我可以拥有一个选项卡导航系统并且我收到以下错误:

错误:
Undefined symbols for architecture i386:
  "_OBJC_CLASS_$_AltonTowersCode", referenced from:
      objc-class-ref in AppDelegate.o
  "_OBJC_CLASS_$_ChessingtonCode", referenced from:
      objc-class-ref in AppDelegate.o
  "_OBJC_CLASS_$_LegolandCode", referenced from:
      objc-class-ref in AppDelegate.o
  "_OBJC_CLASS_$_ThorpeParkCode", referenced from:
      objc-class-ref in AppDelegate.o
ld: symbol(s) not found for architecture i386
clang: error: linker command failed with exit code 1 (use -v to see invocation)