buildscript { repositories { maven { url 'http://maven.aliyun.com/nexus/content/groups/public/' } // maven { url 'https://maven.aliyun.com/repository/jcenter' } google() jcenter() } dependencies { classpath 'com.android.tools.build:gradle:4.1.0' } } allprojects { repositories { // mavenCentral() maven { url 'http://maven.aliyun.com/nexus/content/groups/public/' } // maven { url 'https://maven.aliyun.com/repository/jcenter' } google() jcenter() } } rootProject.buildDir = '../build' subprojects { project.buildDir = "${rootProject.buildDir}/${project.name}" } subprojects { project.evaluationDependsOn(':app') } task clean(type: Delete) { delete rootProject.buildDir }