demo 课程：
https://jspang.com/detailed?id=41#toc222
https://www.bilibili.com/video/BV15t411U7yf?p=5&spm_id_from=pageDriver
安装环境 遇到问题：
1、启动虚拟机的时候报错：unable to locate adb
解决：https://stackoverflow.com/questions/39036796/unable-to-locate-adb-using-android-studio
原文：https://www.cnblogs.com/sameen/p/14596367.html