https://blog.wongcw.com/2021/01/22/%e6%9c%aa%e7%b6%93%e8%aa%8d%e8%ad%89%e7%9a%84android%e8%a8%ad%e5%82%99%e5%b0%87%e5%be%88%e5%bf%ab%e7%84%a1%e6%b3%95%e4%bd%bf%e7%94%a8google-duo/