Android-SDK代理下载更新

1.Tools->Manager Add-on sites->User Defined Sites->new添加下面
http://android-mirror.bugly.qq.com:8080/android/repository/addon.xml

2.Tools->Options:
http proxy server: android-mirror.bugly.qq.com 
http proxy port: 8080

3.勾上下面
force https://....
enable preview tools