Gradle Error:Execution failed for task ':app:processDebugGoogleServices'

Question

I am following this link to integrate Google sign-in in my android app.https://developers.google.com/identity/sign-in/android/start-integrating As given in last step on the

Answer 1

had the same issue as described by @scottyab.

all references were 8.4.0 but it failed due to a reference to app-measurement 8.3.0 that i did not reference anywhere (but one of the dependencies?). you can see the problem if you hover over the bad(red) dependency in Android Studio. explicitly adding

compile 'com.google.android.gms:play-services-measurement:8.4.0'

to app.gradle solved the issue.