直接点 Cancel 就会自动下载 SDK 可以解决当前问题，并能同时解决 SDK tools directory is missing 的问题

SDK tools directory is missing 的问题 和下面状况类似：

https://stackoverflow.com/questions/40326075/sdk-tools-directory-is-missing-when-launching-android-studio-on-my-mac

Proxy：

socks5h://127.0.0.1:1080

mirrors.neusoft.edu.cn

Fix Unable To Access Android SDK Add-On List Error Steps.

参考：https://www.dev2qa.com/how-to-fix-unable-to-access-android-sdk-add-on-list-when-run-android-studio-for-the-first-time/

Android Studio - Unable to access Android SDK add-on list - Mac

原文：https://www.cnblogs.com/lzzkz/p/15056868.html