ios - Swift Firebase : "_GSDK_NSClassFromString", 引用自:

Question

我是第一次尝试我们的 Firebase。我选择手动安装 SDK，因为 Pod Install 耗时很长。

我一步一步地按照指示操​​作，当我尝试运行该项目时，我得到了这个错误:

Undefined symbols for architecture x86_64:
  "_GSDK_NSClassFromString", referenced from:
      -[GSDK_GTMSessionFetcher initWithRequest:configuration:] in GoogleNetworkingUtilities(GTMSessionFetcher.o)
      ___45+[GSDK_GTMSessionFetcher fetcherUserDefaults]_block_invoke in GoogleNetworkingUtilities(GTMSessionFetcher.o)
      -[GSDK_GTMMIMEDocument generateInputStream:length:boundary:] in GoogleNetworkingUtilities(GTMMIMEDocument.o)
      -[GSDK_GTMSessionFetcher(GTMSessionFetcherLogging) loggedInputStreamForInputStream:] in GoogleNetworkingUtilities(GTMSessionFetcherLogging.o)
      -[GSDK_GTMSessionFetcher(GTMSessionFetcherLogging) loggedStreamProviderForStreamProvider:] in GoogleNetworkingUtilities(GTMSessionFetcherLogging.o)
  "_OBJC_CLASS_$_FIRApp", referenced from:
      objc-class-ref in FirebaseAuth(FIRAuth_70be5a6d79de0ee5c6b8ffda807589e3.o)
  "_OBJC_CLASS_$_FIRAppAssociationRegistration", referenced from:
      objc-class-ref in FirebaseAuth(FIRAuth_70be5a6d79de0ee5c6b8ffda807589e3.o)
  "_kFIRAppDeleteNotification", referenced from:
      ___15+[FIRAuth load]_block_invoke in FirebaseAuth(FIRAuth_70be5a6d79de0ee5c6b8ffda807589e3.o)
  "_kFIRAppNameKey", referenced from:
      ___15+[FIRAuth load]_block_invoke_2 in FirebaseAuth(FIRAuth_70be5a6d79de0ee5c6b8ffda807589e3.o)
      ___15+[FIRAuth load]_block_invoke_4 in FirebaseAuth(FIRAuth_70be5a6d79de0ee5c6b8ffda807589e3.o)
  "_kFIRAppReadyToConfigureSDKNotification", referenced from:
      ___15+[FIRAuth load]_block_invoke in FirebaseAuth(FIRAuth_70be5a6d79de0ee5c6b8ffda807589e3.o)
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

有人知道为什么吗？

Answer 1

我不能肯定地说它不是带宽之类的东西，但请尝试以下操作，看看它是否在全新设置/安装时运行得更快:

pod repo remove master
pod setup
pod install