https://qooah.com/2013/08/29/%e6%8c%96%e8%a7%92%e6%88%90%e5%8a%9f-android%e5%85%a8%e7%90%83%e5%89%af%e7%b8%bd%e8%a3%81-hugo-barra-%e5%8a%a0%e7%9b%9f%e5%b0%8f%e7%b1%b3/