https://qooah.com/2015/10/07/google-%e7%bf%bb%e8%ad%af%e5%b0%87%e5%8a%a0%e5%85%a5%e9%80%86%e5%a4%a9%e5%8a%9f%e8%83%bd-%e9%80%99%e6%98%afandroid-6-0-%e9%99%90%e5%ae%9a%e7%9a%84%e5%93%a6/