//横屏正方向if(getRequestedOrientation() == ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE){　　setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE);}//横屏反方向else if (getRequestedOrientation() == ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE){　　setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);}//纵屏正方向else if(getRequestedOrientation() == ActivityInfo.SCREEN_ORIENTATION_PORTRAIT){　　setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT);}//纵屏反方向else if (getRequestedOrientation() == ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT){　　setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);}

ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED,
       ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE,
       ActivityInfo.SCREEN_ORIENTATION_PORTRAIT,
       ActivityInfo.SCREEN_ORIENTATION_USER,
       ActivityInfo.SCREEN_ORIENTATION_BEHIND,
       ActivityInfo.SCREEN_ORIENTATION_SENSOR,
       ActivityInfo.SCREEN_ORIENTATION_NOSENSOR,
       ActivityInfo.SCREEN_ORIENTATION_SENSOR_LANDSCAPE,
       ActivityInfo.SCREEN_ORIENTATION_SENSOR_PORTRAIT,
       ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE,
       ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT,
       ActivityInfo.SCREEN_ORIENTATION_FULL_SENSOR,