Gradle: Download 下载慢的解决办法

https://maven.aliyun.com/mvn/guide

仓库名称	阿里云仓库地址	阿里云仓库地址(老版)	源地址
central	https://maven.aliyun.com/repository/central	https://maven.aliyun.com/nexus/content/repositories/central	https://repo1.maven.org/maven2/
jcenter	https://maven.aliyun.com/repository/public	https://maven.aliyun.com/nexus/content/repositories/jcenter	http://jcenter.bintray.com/
public	https://maven.aliyun.com/repository/public	https://maven.aliyun.com/nexus/content/groups/public	central仓和jcenter仓的聚合仓
google	https://maven.aliyun.com/repository/google	https://maven.aliyun.com/nexus/content/repositories/google	https://maven.google.com/
gradle-plugin	https://maven.aliyun.com/repository/gradle-plugin	https://maven.aliyun.com/nexus/content/repositories/gradle-plugin	https://plugins.gradle.org/m2/
spring	https://maven.aliyun.com/repository/spring	https://maven.aliyun.com/nexus/content/repositories/spring	http://repo.spring.io/libs-milestone/
spring-plugin	https://maven.aliyun.com/repository/spring-plugin	https://maven.aliyun.com/nexus/content/repositories/spring-plugin	http://repo.spring.io/plugins-release/
grails-core	https://maven.aliyun.com/repository/grails-core	https://maven.aliyun.com/nexus/content/repositories/grails-core	https://repo.grails.org/grails/core
apache snapshots	https://maven.aliyun.com/repository/apache-snapshots	https://maven.aliyun.com/nexus/content/repositories/apache-snapshots	https://repository.apache.org/snapshots/

引用上面的阿里云仓库地址就行了，速度杠杆的

例如：

buildscript {
    repositories {
//        google()
//        jcenter()
        maven{ url 'http://maven.aliyun.com/nexus/content/groups/public/'}
        maven{ url 'https://maven.aliyun.com/repository/google'}
    }
    dependencies {
        classpath 'com.android.tools:r8:2.1.75'
        classpath 'com.android.tools.build:gradle:4.0.2'
        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
        // 添加emas-services插件
        classpath 'com.aliyun.ams:emas-services:1.0.1'
        //添加AndResGuard依赖
        classpath 'com.tencent.mm:AndResGuard-gradle-plugin:1.2.20'
        //添加华为推送依赖
        classpath 'com.huawei.agconnect:agcp:1.3.1.300'
        classpath 'com.didichuxing.doraemonkit:dokitx-plugin:3.3.5'
        //添加多渠道依赖
        classpath 'com.leon.channel:plugin:2.0.3'
    }
}

allprojects {
    repositories {
//        google()
//        jcenter()
        maven{ url 'http://maven.aliyun.com/nexus/content/groups/public/'}
        maven{ url 'https://maven.aliyun.com/repository/google'}
    }
}

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