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

At first you should call

    dependencies {
    classpath 'com.android.tools.build:gradle:1.5.0'
    classpath 'com.google.gms:google-services:2.0.0-alpha2'
}

Don't (Avoid calling +)

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

Do

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