android studio的gradle,android studio无法下载

1.C:Users用户.gradle下init.gradle（沒有此文件就新建一個）文件下增加如下代码内容

all项目{ repositories } defa liyun _ repository _ URL=' http://maven.a liyun.com/nexus/content/groups/public nexus/content/repositories/j center ' all { artifactrepositoryrepo-if (repoinstanceofmavenartifactrepository (def URL ) if (URL.starts with (https://repo1. maven.org/maven2) ) project.logger.life cycle ' repository $ { repo.URL } replalar if (URL.starts with (' https://j center.bin tray.com/' ) ) { project.logger.life cycle ' repository $ { repo.URL } rereposity }

buildscript { . repositories { maven } URL ' http://maven.a liyun.com/repository/Google ' } maven { URL ' 3358 maven.} groups/public ' } maven { URL ' http://maven.a liyun.com/nexuun } Google (j center )………all projects (repositoriories ) 谷歌' maven { URL ' http://maven.a liyun.com/repository/j center ' } maven { URL ' http://maven.a liyun.com/nexus/nexus/content/repositories/grad le-plugin ' } Google (j center ) }