DeviceDecorViewListener

DeviceDecorViewListener.kt

requireActivity().window.decorView.setOnSystemUiVisibilityChangeListener { visibility ->
            // Note that system bars will only be "visible" if none of the
            // LOW_PROFILE, HIDE_NAVIGATION, or FULLSCREEN flags are set.
            if (visibility and View.SYSTEM_UI_FLAG_FULLSCREEN == 0) {
                // TODO: The system bars are visible. Make any desired
                // adjustments to your UI, such as showing the action bar or
                // other navigational controls.
              
                Handler(Looper.getMainLooper()).postDelayed({
                    hideSystemUi()
                }, 2000)
            } else {
              
                // TODO: The system bars are NOT visible. Make any desired
                // adjustments to your UI, such as hiding the action bar or
                // other navigational controls.
            }
        }