安卓隐藏状态栏和导航栏

• 参考代码
• 设置了 FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS 表明 Window 负责系统 bar 的 background 绘制，绘制透明背景的系统 bar（状态栏和导航栏）

 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {

            val insetsController = this.window.insetsController
            // 隐藏状态栏
            insetsController?.hide(WindowInsets.Type.statusBars())
            // 隐藏导航栏
            insetsController?.hide(WindowInsets.Type.navigationBars())
            // 隐藏标题栏
            supportActionBar?.hide()
            // 设置状态栏是透明的
            this.window.addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS)
            // 设置导航栏是透明的
            this.window.addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION)

            this.window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS)

            // 解决隐藏状态栏时，顶部出现黑长条问题，该属性可以让布局内容延伸到状态栏显示
            this.window.attributes.layoutInDisplayCutoutMode = WindowManager.LayoutParams.LAYOUT_IN_DISPLAY_CUTOUT_MODE_SHORT_EDGES
        } else {
            this.window.addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS)
            this.window.addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION)
            this.window.setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN)
            this.window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS)
        }

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• 配合onWindowFocusChanged效果更加，可以实现状态栏和导航栏在触摸的时候出现而后自动隐藏

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

        // 判断是否有焦点
        if (hasFocus && Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {

            val decorView = window.decorView
            decorView.setSystemUiVisibility(
                android.view.View.SYSTEM_UI_FLAG_LAYOUT_STABLE
                or android.view.View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY
            )

        }
    }

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