Switch states are not showing up in checked form

override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_creator)

        pizzaId = intent.getIntExtra(PIZZA_ID, -1)
        viewModel= ViewModelProviders.of(this).get(CreaterViewModel::class.java)
        thread {
            if (pizzaId != -1) {
                viewModel.pizzaName=db.pizzaDao().getPizzaById(pizzaId).name
                val toppingIds=db.pizzaToppingDao().getToppingIdForPizzaId(pizzaId)
                toppingIds.forEach{
                    val topping= db.ToppingDao().getToppingById(it)
                    viewModel.switchStates[topping]=true
                }
                runOnUiThread {
                        title=viewModel.pizzaName
                }
            }
        }

        pizzaView = PizzaView(this,viewModel.switchStates)

        val frameLayout = findViewById<FrameLayout>(R.id.frameLayout)
        frameLayout.addView(pizzaView, ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT)

        val adapter = CreatorAdapter(pizzaView,viewModel)
        val recyclerView = findViewById<RecyclerView>(R.id.toppingsRecyclerView)
        recyclerView.layoutManager = LinearLayoutManager(this, LinearLayoutManager.VERTICAL, false)
        recyclerView.adapter = adapter

        adapter.list.addAll(toppings)
    }