android FullScreenStyle

Same Phone displayed ‘Transclut Activiy with NoStatusBar’ not work

before: current fullscreen display the next window statusbar

after: current fullscreen display th

<style name="full_screen_transparent_style" parent="Theme.AppCompat.NoActionBar">
        <item name="android:windowNoTitle">true</item>
        <item name="android:windowActionBar">true</item>
        <item name="android:windowFullscreen">true</item>
        <item name="android:windowBackground">@android:color/transparent</item>
        <item name="android:colorBackgroundCacheHint">@null</item>
        <item name="android:windowIsTranslucent">true</item>
        <item name="android:windowAnimationStyle">@null</item>
        <item name="android:windowContentOverlay">@null</item>
        <item name="android:backgroundDimEnabled">true</item>
        <item name="android:windowFrame">@null</item>
    </style>

https://medium.com/androiddevelopers/why-would-i-want-to-fitssystemwindows-4e26d9ce1eec

 android:fitsSystemWindows="true"

  val layoutParams: WindowManager.LayoutParams = window.attributes
        layoutParams.dimAmount = 0.79f
        window.addFlags(WindowManager.LayoutParams.FLAG_DIM_BEHIND)
        window.attributes = layoutParams