Fixing full screen issue on webView android - jetpack compose

VideoPlayerWebChromeClient.kt

/**
 * created by Mohammad Reza Eram
 */

class VideoPlayerWebChromeClient(private val activity: Activity) : WebChromeClient() {
    private var mCustomView: View? = null
    private var mCustomViewCallback: CustomViewCallback? = null

    @Suppress("MagicNumber")
    override fun getDefaultVideoPoster(): Bitmap? {
        return try {
            if (mCustomView == null) {
                null
            } else BitmapFactory.decodeResource(activity.applicationContext.resources, 2130837573)
        } catch (ignored: Exception) {
            null
        }
    }

    override fun onHideCustomView() {
        val window = activity.window
        (window.decorView as FrameLayout).removeView(mCustomView)
        mCustomView = null
        mCustomViewCallback?.onCustomViewHidden()
        mCustomViewCallback = null
        WindowCompat.setDecorFitsSystemWindows(window, true)
        WindowInsetsControllerCompat(window, window.decorView).show(WindowInsetsCompat.Type.systemBars())
    }

    override fun onShowCustomView(paramView: View, paramCustomViewCallback: CustomViewCallback) {
        val window = activity.window
        if (mCustomView != null) {
            onHideCustomView()
            return
        }
        mCustomView = paramView
        mCustomViewCallback = paramCustomViewCallback
        (window.decorView as FrameLayout).addView(
            mCustomView,
            ViewGroup.LayoutParams(
                ViewGroup.LayoutParams.MATCH_PARENT,
                ViewGroup.LayoutParams.MATCH_PARENT
            )
        )
        WindowCompat.setDecorFitsSystemWindows(window, false)
        WindowInsetsControllerCompat(window, window.decorView).let { controller ->
            controller.hide(WindowInsetsCompat.Type.systemBars())
            controller.systemBarsBehavior = WindowInsetsControllerCompat.BEHAVIOR_SHOW_TRANSIENT_BARS_BY_SWIPE
        }
    }
}