AS 第一次gradle configure build下载极慢解决方法

还是用了阿里云仓库
只加一句那个也是没成功
加了这个两句的成了

buildscript {
    repositories {
//        maven{ url 'http://maven.aliyun.com/nexus/content/repositories/central/'}
//        maven()
        maven { url 'http://maven.aliyun.com/nexus/content/groups/public/' }
        maven { url 'http://maven.aliyun.com/nexus/content/repositories/jcenter' }
        google()
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.0.1'

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

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

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