https://qooah.com/2012/11/03/android-4-2-%e5%85%a8%e6%96%b0%e7%9a%84%e5%ae%89%e5%85%a8%e7%b3%bb%e7%b5%b1%ef%bc%8c%e4%bb%a4%e4%bd%a0%e6%89%8b%e6%a9%9f%e5%a4%9a%e4%b8%80%e4%bb%bd%e4%bf%9d%e9%9a%9c/