安装Firebase pod后链接器错误

Question

I am a beginner in iOS app development. I am currently working on a project that needs to be changed from Parse to Firebase`.

• I installed cocoa pods and " firebase/core " pod as firebase site instructed.
• Imported firebase.h in appdelegate.h
• Added [FIRApp configure]; in ' didfinishlaunchingwithoptions '
• Added ' googleservice-info.plist ' in project.

After doing these steps, I ran the build but it failed with following errors ( Screen Shot )

Showing Recent Issues

Ld /Users/../Build/Products/Debug-iphonesimulator/Example.app/Example

Apple Mach-O Linker Error Group

Undefined symbols for architecture x86_64:
  "_OBJC_CLASS_$_FBAppCall", referenced from:
      objc-class-ref in ParseFacebookUtils(PFFacebookAuthenticationProvider.o)
  "_OBJC_CLASS_$_FBSession", referenced from:
      objc-class-ref in ParseFacebookUtils(PFFacebookAuthenticationProvider.o)
  "_FBTokenInformationExpirationDateKey", referenced from:
      -[PFFacebookTokenCachingStrategy cacheTokenInformation:] in ParseFacebookUtils(PFFacebookTokenCachingStrategy.o)
      -[PFFacebookTokenCachingStrategy expirationDate] in ParseFacebookUtils(PFFacebookTokenCachingStrategy.o)
      -[PFFacebookTokenCachingStrategy setExpirationDate:] in ParseFacebookUtils(PFFacebookTokenCachingStrategy.o)
  "_OBJC_METACLASS_$_FBSessionTokenCachingStrategy", referenced from:
      _OBJC_METACLASS_$_PFFacebookTokenCachingStrategy in ParseFacebookUtils(PFFacebookTokenCachingStrategy.o)
  "_OBJC_CLASS_$_FBSessionTokenCachingStrategy", referenced from:
      _OBJC_CLASS_$_PFFacebookTokenCachingStrategy in ParseFacebookUtils(PFFacebookTokenCachingStrategy.o)
  "_OBJC_CLASS_$_FBRequest", referenced from:
      objc-class-ref in ParseFacebookUtils(PFFacebookAuthenticationProvider.o)
  "_FBTokenInformationUserFBIDKey", referenced from:
      -[PFFacebookTokenCachingStrategy facebookId] in ParseFacebookUtils(PFFacebookTokenCachingStrategy.o)
      -[PFFacebookTokenCachingStrategy setFacebookId:] in ParseFacebookUtils(PFFacebookTokenCachingStrategy.o)
  "_FBTokenInformationTokenKey", referenced from:
      -[PFFacebookTokenCachingStrategy accessToken] in ParseFacebookUtils(PFFacebookTokenCachingStrategy.o)
      -[PFFacebookTokenCachingStrategy setAccessToken:] in ParseFacebookUtils(PFFacebookTokenCachingStrategy.o)
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

I know this has something to do with the parse code in my project but I don't have much knowledge in Parse or in Firebase.

Please help me with this error and guide me how to successfully migrate from Parse to Firebase.

Answer 1

If you used Parse SDK, just make sue you delete ParseFacebookUtils.framework library from your project or from your podfile remove

pod 'Parse'
pod 'ParseFacebookUtilsV4'