build.gradle

// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
    repositories {
        maven {
            name "aliyun-Repo"
            url 'https://maven.aliyun.com/repository/public/'
        }
        google()
        jcenter()
    }
    dependencies {
        classpath "com.android.tools.build:gradle:4.0.0"
        classpath 'com.google.protobuf:protobuf-gradle-plugin:0.8.10'
        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        maven {
            name "aliyun-Repo"
            url 'https://maven.aliyun.com/repository/public/'
        }
        google()
        jcenter()
    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}