解决android sdk 无法更新

今天更新sdk，遇到了更新下载失败问题：

Fetching https://dl-ssl.google.com/android/repository/addons_list-2.xml Fetched Add-ons List successfully
Fetching URL: https://dl-ssl.google.com/android/repository/repository-8.xml Done loading packages.
Fetching https://dl-ssl.google.com/android/repository/addons_list-2.xml Failed to fetch URL https://dl-ssl.google.com/android/repository/addons_list-2.xml, reason: Connection to https://dl-ssl.google.com refused
Fetched Add-ons List successfully
Fetching URL: https://dl-ssl.google.com/android/repository/repository-8.xml Failed to fetch URL https://dl-ssl.google.com/android/repository/repository-8.xml, reason: HttpHostConnect Connection to https://dl-ssl.google.com refused
Done loading packages.

搜索了下，解决方案如下：

解决国内访问Google服务器的困难：
1.启动 Android SDK Manager ；
2.打开主界面，依次选择「Tools」、「Options…」，弹出『Android SDK Manager – Settings』窗口；
3.在『Android SDK Manager – Settings』窗口中，在「HTTP Proxy Server」和「HTTP Proxy Port」输入框内填入mirrors.neusoft.edu.cn和80，并且选中「Force https://… sources to be fetched using http://…」复选框；4.设置完成后单击「Close」按钮关闭『Android SDK Manager – Settings』窗口返回到主界面；
5.依次选择「Packages」、「Reload」。