Nest API iOS Errors

问题

I'm using the Nest Developer https://developer.nest.com/ API to create an iOS app. Does anyone know how to link the Firebase framework into my app? I keep getting linking errors:

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

回答1:

Have you checked the 'Link Binary With Libraries' build phase in Xcode? Make sure the Firebase.framework is added there. Here's how to add it:

1. In the project editor, select the target to which you want to add a library or framework.

2. Click Build Phases at the top of the project editor.

3. Open the Link Binary With Libraries section.

4. Click the Add button (+) to add a library or framework.

5. Click the "Add Other" button below the list.

6. Search for Firebase.framework where you downloaded and unzipped it.

来源：https://stackoverflow.com/questions/24378457/nest-api-ios-errors