buildscript { ext.kotlin_version = '1.2.71' repositories { google() maven{url'http://maven.aliyun.com/nexus/content/groups/public/'} } dependencies { classpath 'com.android.tools.build:gradle:3.2.0' classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version" } } allprojects { repositories { google() maven{url'http://maven.aliyun.com/nexus/content/groups/public/'} } } rootProject.buildDir = '../build' subprojects { project.buildDir = "${rootProject.buildDir}/${project.name}" } subprojects { project.evaluationDependsOn(':app') } task clean(type: Delete) { delete rootProject.buildDir }