Android 隐藏系统栏（API 21 - API 32）

val decorView: View = window.decorView
        //侵入系统栏
        WindowCompat.setDecorFitsSystemWindows(window,!hide)
        /**API 28 以上 状态栏位置上被黑条占领 问题解决 **/
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
            val lp = window.attributes
            lp.layoutInDisplayCutoutMode = WindowManager.LayoutParams.LAYOUT_IN_DISPLAY_CUTOUT_MODE_SHORT_EDGES
            window.attributes = lp
        }
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
            val controller: WindowInsetsController? = decorView.windowInsetsController
            //从边缘滑动以显示隐藏栏。 无论导航栏的可见性如何，手势导航都有效。
            //API level 31
//            controller?.systemBarsBehavior =  WindowInsetsController.BEHAVIOR_DEFAULT
            //“粘性沉浸模式”。 从边缘滑动以暂时显示隐藏栏。
            controller?.systemBarsBehavior =  WindowInsetsController.BEHAVIOR_SHOW_TRANSIENT_BARS_BY_SWIPE
            //WindowInsets.Type.navigationBars() (底部)导航栏
            //WindowInsets.Type.statusBars() (顶部)状态栏
            //WindowInsets.Type.systemBars() (底部和顶部)系统栏
            if(!hide) controller?.show/*显示*/(WindowInsets.Type.systemBars())
            else controller?.hide/*隐藏*/(WindowInsets.Type.systemBars())
        } else {
            window.decorView.systemUiVisibility = (
                    View.SYSTEM_UI_FLAG_IMMERSIVE
//                  // 将内容设置为显示在系统栏下方，以便在系统栏隐藏和显示时内容不会调整大小。
                    or View.SYSTEM_UI_FLAG_LAYOUT_STABLE
                    or View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
                    or View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
                    //隐藏导航栏和状态栏
                    or View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
                    or View.SYSTEM_UI_FLAG_FULLSCREEN
                    )
        }

 或者

 <style name="AppTheme" parent="Theme.AppCompat.DayNight.NoActionBar">
        <!-- 隐藏状态栏 -->
        <item name="android:windowFullscreen">true</item>
        <!-- 隐藏标题栏 -->
        <item name="android:windowNoTitle">true</item>
    </style>

动态窗口

WindowCompat.setDecorFitsSystemWindows(window, false)
        ViewCompat.setOnApplyWindowInsetsListener(
            window.decorView
        ) { v, insets ->
            val imeHeight = insets.getInsets(WindowInsetsCompat.Type.ime()).bottom
            v.setPadding(
                0,
                0,
                0,
                imeHeight + insets.getInsets(WindowInsetsCompat.Type.navigationBars()).bottom
            )
            insets
        }
        window.statusBarColor = Color.TRANSPARENT