横竖屏切换的时候显示和隐藏状态栏：
//竖屏 // getWindow().clearFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN); //显示状态栏 View decorView = getWindow().getDecorView(); decorView.setSystemUiVisibility(View.SYSTEM_UI_FLAG_VISIBLE);//全部显示出 //横屏 // getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN); //隐藏状态栏 View decorView = getWindow().getDecorView(); decorView.setSystemUiVisibility( View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION | View.SYSTEM_UI_FLAG_FULLSCREEN | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY);
