build.gradle

// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
    ext.kotlin_version = '1.5.20'//'1.3.72'//
    repositories {
        maven() { url 'https://maven.aliyun.com/repository/public' }
        google()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:4.2.1'
        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
    }
}

allprojects {
    repositories {
        maven() { url 'https://maven.aliyun.com/repository/public' }
//        maven() {
//            url "https://oss.sonatype.org/content/repositories/snapshots"
//        }
        google()
    }
}

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