buildscript { repositories { google() jcenter() } dependencies { classpath 'com.android.tools.build:gradle:3.0.0' classpath 'com.jakewharton:butterknife-gradle-plugin:8.4.0' classpath 'org.greenrobot:greendao-gradle-plugin:3.2.2' } } allprojects { repositories { google() jcenter() maven { url "https://jitpack.io" } maven { url 'https://oss.jfrog.org/libs-snapshot' } mavenCentral() } } task clean(type: Delete) { delete rootProject.buildDir }