buildscript { ext.kotlin_version = '1.2.21' ext.kotlin_coroutines_version = '0.21.2' ext.anko_version='0.10.4' repositories { jcenter() mavenCentral() google() } dependencies { classpath 'com.android.tools.build:gradle:3.0.1' classpath 'com.google.gms:google-services:3.0.0' classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version" } } allprojects { repositories { jcenter() maven { url 'https://maven.google.com' } maven { url 'https://jitpack.io' } google() } } task clean(type: Delete) { delete rootProject.buildDir }