Failed to refresh Gradle project ‘service’

Unknown host ‘downloads.gradle.org’.

Please ensure the host name is correct. If you are behind an HTTP proxy, please configure the proxy settings either in IDE or Gradle.

HTTP proxy settings Open Gradle documentation

Android Studio 报如下错误

17:13:40 Failed to refresh Gradle project ‘service’

Unknown host ‘downloads.gradle.org‘.

     Please ensure the host name is correct. If you are behind an HTTP proxy, please configure the proxy settings either in IDE or Gradle.

     HTTP proxy settings Open Gradle documentation

解决方法：

使用本地的Gradle环境： 

Ctrl + Alt + S 打开设置，选择 Gradle 条目，单选 "use local gradle distributio" 并指定你安装的Gradle路径。