https://qooah.com/2012/11/19/android-4-2-%e5%91%8a%e8%a8%b4%e4%bd%a0-2012%e6%b2%92%e6%9c%89%e4%b8%96%e7%95%8c%e6%9c%ab%e6%97%a5-%e5%82%bb%e7%9a%84%e5%97%8e/