https://blog.wongcw.com/2019/10/19/%e6%9b%9d%e8%8f%af%e7%82%bap40%e7%b3%bb%e5%88%97%e5%b0%87%e7%99%bc%e9%b4%bb%e8%92%99%e5%92%8candroid%e5%85%a9%e5%80%8b%e7%b3%bb%e7%b5%b1%e7%89%88%e6%9c%ac%e5%be%8c%e7%bd%ae%e4%ba%94%e5%80%8b%e6%94%9d/