Android Appending Sticky Bottom Sheet View

bottomsheet.kt

    override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
        val bottomSheetDialog = super.onCreateDialog(savedInstanceState) as BottomSheetDialog
        bottomSheetDialog.setOnShowListener {
            val containerLayout = dialog?.findViewById(
                com.google.android.material.R.id.container
            ) as? FrameLayout

            val buttonLayout = LayoutInflater.from(dialog?.context)
                .inflate(R.layout.layout_delivery_bottom_sheet_buttons, null)
                .findViewById<LinearLayout>(R.id.layoutButtons)

            val parent = buttonLayout?.parent as? ViewGroup
            parent?.removeView(buttonLayout)

            containerLayout?.addView(
                buttonLayout,
                containerLayout.childCount
            )
        }

        return bottomSheetDialog
    }