android 双屏显示display

https://blog.csdn.net/qq_29848853/article/details/130362129

利用安卓presentation类（相当于一个dialog）

把画面显示到对应显示屏

https://blog.csdn.net/EthanCo/article/details/128662556

https://www.jb51.net/article/273817.htm

https://www.jb51.net/article/179034.htm