1. 启动 Android SDK Manager ,打开主界面,依次选择「Tools」「Options...」,弹出『Android SDK Manager - Settings』窗口;
  2. 『Android SDK Manager - Settings』窗口中,在「HTTP Proxy Server」「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;
  3. 依次选择「Packages」「Reload」