How to show the UI example

.kt

@Composable
fun rememberSystemUiVisibilityController(
    window: Window? = findWindow()
): SystemUiVisibilityController {
    val view = LocalView.current
    return remember(view) {  
        AndroidSystemUiVisibilityController(window, view) 
    }
}

interface SystemUiVisibilityState {
   val isVisible: StateFlow<Boolean>
}

interface SystemUiVisibilityController :SystemUiVisibilityState {
   var isSystemBarsVisible: Boolean
}

internal class AndroidSystemUiVisibilityController(
   window: Window?,
   private val view: View
) : SystemUiVisibilityController {

   private val windowInsetsController = window?.let {
       WindowInsetsControllerCompat(window, view).apply {
           systemBarsBehavior = WindowInsetsControllerCompat.BEHAVIOR_SHOW_TRANSIENT_BARS_BY_SWIPE
       }
   }

   private val isVisibleStateFlow = MutableStateFlow(isSystemBarsVisible)

   private fun systemUiBars() =
       WindowInsetsCompat.Type.statusBars() or WindowInsetsCompat.Type.navigationBars()

   override var isSystemBarsVisible: Boolean
       get() {
           return ViewCompat.getRootWindowInsets(view)
               ?.isVisible(systemUiBars()) == true
       }
       set(value) {
           if (value) {
               windowInsetsController?.show(systemUiBars())
           } else {
               windowInsetsController?.hide(systemUiBars())
           }
           isVisibleStateFlow.value = value
       }

   override val isVisible: StateFlow<Boolean>
       get() = isVisibleStateFlow.asStateFlow()
}

val SystemUiVisibilityController.toggleUi: () -> Unit
   get() = {
       isSystemBarsVisible = !isSystemBarsVisible
   }

@Composable
private fun findWindow(): Window? =
   (LocalView.current.parent as? DialogWindowProvider)?.window
       ?: LocalView.current.context.findWindow()

private tailrec fun Context.findWindow(): Window? =
   when (this) {
       is Activity -> window
       is ContextWrapper -> baseContext.findWindow()
       else -> null
   }