iPhone - isKindOfClass 生成链接器错误

Question

我有一个这样定义的类：

@interface ServerCall : NSObject {
// vars
}

// properties

// functions (init)

@end

并且

@interface ServerNotification : ServerCall {
    // just vars
}
@end

我在另一个类中进行了调用：

if ([call isKindOfClass:[ServerNotification class]])
   // do things

构建时出现此错误：

Undefined symbols for architecture i386:
  "_OBJC_CLASS_$_ServerNotification", referenced from:
      objc-class-ref in ServerCommunication.o
ld: symbol(s) not found for architecture i386
collect2: ld returned 1 exit status

  "_OBJC_CLASS_$_ServerNotification", referenced from:
      objc-class-ref in ServerCommunication.o
ld: symbol(s) not found for architecture i386
collect2: ld returned 1 exit status

我在构建设置中也有“默认隐藏的符号”=否

我错过了什么？

Answer 1

链接器找不到您的 ServerNotification 类的实现。您是否已将匹配的实现文件添加到您的目标中？