Android Google SignIn not working in debug mode: GoogleSignInResult is false

Question

I have been following this tutorial to get Google SignOn going: https://developers.google.com/identity/sign-in/android/start-integrating

When I run my application lo

Answer 1

I had the same problem and it was due to

apply plugin: 'com.google.gms.google-services'

not being at the bottom of the app build.gradle.

Figured it out by looking at the Gradle Console. No errors were raised.