安卓开发的环境怎么这么难配置呀Android SDK下载总是失败

[gs0038]

安卓开发的环境怎么这么难配置呀Android SDK下载总是失败
百度https://www.cnblogs.com/xdp-gacl/p/4322165.html有说修改hosts 也是失败
203.208.46.146 dl.google.com
203.208.46.146 dl-ssl.google.com
按照这个修改hosts
https://blog.csdn.net/j04110414/article/details/44149653/
也改了，还是失败

然后有说修改代理的，
https://www.cnblogs.com/sunzn/p/4242131.html
http://www.chenruixuan.com/archives/479.html

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。设置完成后单击「Close」按钮关闭『Android SDK Manager - Settings』窗口返回到主界面；

也照做了，还是 失败，实在没办法以了，求各位大侠帮我出出招，怎么办呀，在线等

错误的界面




Fetching http://dl-ssl.google.com/android/repository/addons_list-2.xml
Fetched Add-ons List successfully
Fetching URL: http://dl-ssl.google.com/android/repository/repository-10.xml
Done loading packages.
Fetching http://dl-ssl.google.com/android/repository/addons_list-2.xml
Failed to fetch URL http://dl-ssl.google.com/android/repository/addons_list-2.xml, reason: Read timed out
Fetched Add-ons List successfully
Fetching URL: http://dl-ssl.google.com/android/repository/repository-10.xml
Failed to fetch URL http://dl-ssl.google.com/android/repository/repository-10.xml, reason: SocketTimeout Read timed out
Fetching URL: http://dl-ssl.google.com/android/repository/repository-10.xml

[usecf]

不要勾选update/new那个选项试试