解决Unknown host ‘d29vzk4ow07wi7.cloudfront.net‘. You may need to adjust the proxy settings in Gradle

在总的 build.gradle 中加入阿里云镜像，注意要放在 jcenter() 的上边

maven { url 'http://maven.aliyun.com/nexus/content/groups/public/' }//阿里云镜像服务 1

如图：