iOS - Firebase error: Use of unresolved identifier FIRApp running supplied code

Question

When trying to configure XCode to work with Firebase 3, using the code in the setup docs gives me an error:

https://firebase.google.com/docs/ios/setup#add_the_sdk

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Answer 1

I had the same error, resolved easily. Close the project. Open pod file then update from

pod 'Firebase', '>= 2.5.1'

to

pod 'Firebase/Core'
pod 'Firebase/Database'

Then open terminal, located to your pod file in project folder, enter :pod update. Make sure you see 2 lines

Installing Firebase 3.2.0 (was 2.5.1)
Installing FirebaseDatabase (3.0.1)

Then you're good to go