转屏时动态调整VideoView位置
#	modified:   AndroidManifest.xml
#	modified:   res/layout/x_activity_my_popup_window.xml
#	modified:   res/layout/x_video_activity.xml
#	modified:   src/com/example/mypopupwindow/MediaPlayerVideo.java
#	modified:   src/com/example/mypopupwindow/VideoActivity.java