Android隐藏标题栏 状态栏 横屏

        // 隐藏标题栏
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        // 隐藏状态栏
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
                WindowManager.LayoutParams.FLAG_FULLSCREEN);
        // 锁定横屏
        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);