android stadio 编译报错：download fastutil-7.2.0.jar

在Ubuntu上面，新安装的stadio，第一次编译项目的时候，

一直开在下载 fastutil-7.2.0.jar

原因是需要翻墙。那么改一下你的buil.gradle

buildscript {

    repositories {
        maven{ url = "http://maven.aliyun.com/nexus/content/groups/public/" }
        google()
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.1.2'

        // 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/groups/public/" }
        google()
        jcenter()
    }
}