androidbook

just add it in your main gradel file  and add this in your project gradel dependencies { classpath 'com.android.tools.build:gradle:3.1.0' classpath 'com.google.gms:google-services:3.2.0' // NOTE: Do not place your application dependencies here; they belong // in the individual module build.gradle files } repositories { jcenter() maven { url "https://jitpack.io" } }