https://blog.wongcw.com/2022/05/18/google%e5%b0%87android%e7%9a%84%e5%ae%89%e5%85%a8%e7%89%b9%e6%80%a7%e9%87%8d%e6%96%b0%e5%91%bd%e5%90%8d%e7%82%baprotected-by-android/