去掉标题栏:requestWindowFeature(Window.FEATURE_NO_TITLE);API上是这么说的:int FEATURE_NO_TITLE Flag for the “no title” feature, turning off the title at the top of the screen.屏幕全屏:getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);API上是这么说的:int FLAG_FULLSCREEN Window flag: Hide all
