Android沉浸式状态栏

 override fun onWindowFocusChanged(hasFocus: Boolean) {
        super.onWindowFocusChanged(hasFocus)
        if (hasFocus) {

            //显示到刘海屏
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
                window.attributes = window.attributes.apply {
                    layoutInDisplayCutoutMode =
                        WindowManager.LayoutParams.LAYOUT_IN_DISPLAY_CUTOUT_MODE_SHORT_EDGES
                }
            }

            //新方式
            WindowCompat.setDecorFitsSystemWindows(window, false)
            val controller = WindowCompat.getInsetsController(this.window,this.window.decorView)
        controller.isAppearanceLightStatusBars = false
            controller?.hide(WindowInsetsCompat.Type.systemBars())
            controller?.systemBarsBehavior =
                WindowInsetsControllerCompat.BEHAVIOR_SHOW_TRANSIENT_BARS_BY_SWIPE

            //旧方式
           /* window.decorView.systemUiVisibility = (View.SYSTEM_UI_FLAG_LAYOUT_STABLE
                    or View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
                    or View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
                    or View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
                    or View.SYSTEM_UI_FLAG_FULLSCREEN
                    or View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY)*/
      
        }
    }