https://blog.wongcw.com/2018/10/29/%e8%b0%b7%e6%ad%8c%e5%8f%91%e5%b8%8310%e6%9c%88%e4%bb%bdandroid%e7%89%88%e6%9c%ac%e9%80%82%e9%85%8d%e7%8e%87%e6%8a%a5%e5%91%8a%ef%bc%9anogat%e4%b8%8b%e6%bb%91%e8%87%b328-1-oreo%e5%8d%87%e8%87%b322-5/