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

Question

I followed google documentation to integrate my app to Google Analytics. But when adding

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

and b

Answer 1

Replace the line compile 'com.google.android.gms:play-services-gcm:+'

with the following compile 'com.google.android.gms:play-services-gcm:8.4.0'

in the application build.gradle file.