Error
Execution failed for task ':app:processDebugGoogleServices'. Please fix the version conflict either by updating the version of the google-services plugin (information about the latest version is available here) or updating the version of com.google.android.gms to 9.0.0.
In top level build gradle:
dependencies {
classpath 'com.android.tools.build:gradle:2.2.0-alpha7'
classpath 'com.google.gms:google-services:3.0.0'
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
In app level build gradle:
compile 'com.google.android.gms:play-services-auth:9.4.0'
I have also include
apply plugin: 'com.google.gms.google-services'
in the end of the build gradle file.