找不到符号. Collect2:ID返回了1个退出状态 [英] Symbol(s) not found. Collect2: Id returned 1 exit status

问题描述

我收到以下错误:

Undefined symbols:
  "_OBJC_CLASS_$_SurveyDelegate", referenced from:
      objc-class-ref-to-SurveyDelegate in Menus.o
ld: symbol(s) not found
collect2: ld returned 1 exit status

该错误是由删除SurveyDelegate引起的，并且在我删除尝试使用超级委托的代码时已修复.为什么没有给出正常的编译错误?我已经尝试清理项目了吗?实际上，这也让我在其他地方声明了SurveyDelegate，并且此错误并未给出链接器或编译器错误.

The error was caused by removing SurveyDelegate and was fixed when I removed the code that tried to use a survery delegate. Why isn't it giving normal compile error? I already tried cleaning the project? In fact, it also let me declare a SurveyDelegate elsewhere and this error wasn't giving either a linker or compiler error.

其他问题

Objective c id返回了1个退出状态-相同的名称，但问题不同

Objective c id returned 1 exit status - same name, but different problem

推荐答案

从项目中删除SurveyDelegate的文件.在Finder中检查项目目录中是否有SurveyDelegate文件.删除它们，并在必要时在XCode中重新创建.不要忘了清洁(Cmd + Shift + K).

Remove files of SurveyDelegate from project. Check the project directory in Finder for SurveyDelegate files. Remove them and recreate in XCode if necessary. Don't forget about cleaning (Cmd + Shift + K).

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