// Top-level build file where you can add configuration options common to all sub-projects/modules. buildscript { ext.kotlin_version = '1.2.20' repositories { google() jcenter() } dependencies { classpath 'com.android.tools.build:gradle:3.0.1' classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version" // NOTE: Do not place your application dependencies here; they belong // in the individual module build.gradle files } } ext { compileSdkVersion = 26 minSdkVersion = 16 targetSdkVersion = 26 supportLibVersion = '26.1.0' okhttpVersion = '3.9.1' } allprojects { repositories { google() jcenter() } } task clean(type: Delete) { delete rootProject.buildDir }