buildscript { ext.kotlin_version = '1.2.21' repositories { jcenter() google() } dependencies { classpath 'com.android.tools.build:gradle:3.0.1' classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version" classpath 'com.novoda:bintray-release:0.8.0' } } allprojects { repositories { jcenter() google() } } task clean(type: Delete) { delete rootProject.buildDir } tasks.withType(Javadoc) { enabled = false } ext { configuration = [ compileSdkVersion: 27, targetSdkVersion : 27, minSdkVersion : 14, buildToolsVersion: '27.0.3' ] libraries = [ supportLibraryVersion: '27.1.0', junitVersion : '4.12', supportTestLibVersion: '0.5', espressoVersion : '3.0.1' ] }