Android app does not connect to Firebase

Question

I\'m developing android app using Firebase GMS service.
I tried to follow their tutorials, i made project as they said, downloaded the json files.

But when I

Answer 1

Well, you need to resolve all the gradle build issues. Go to the gradle console (usually located in the bottom right of the IDE) and check for them errors/warnings. Once your build succeeds without errors the connection to firebase should work.