iOS播放器横竖屏切换

http://www.cocoachina.com/cms/wap.php?action=article&id=20292

 

http://feihu.me/blog/2015/how-to-handle-image-orientation-on-iOS/

 

https://www.jianshu.com/p/4a6149c6087e

 

https://blog.csdn.net/chengkaizone/article/details/51295022