Livedata导致recyclerview更新，导致失去edittext焦点

Question

我正在尝试实现购物车视图，用户可以在其中查看他选择的产品并可以编辑其数量。对于存储，我正在使用Room并从数据库中观察实时数据。我在EditText上使用焦点更改侦听器，并在edittext失去焦点时更新数量。我面临的问题是，每当我单击任何edittext时，第一个edittext都会成为焦点。

dashboardViewModel.cartProducts.observe(viewLifecycleOwner, object: Observer<List<Product?>> {

            override fun onChanged(t: List<Product?>?) {
                t?.let {
                    Log.d(TAG,"${it.size}")
                    fragmentDashboardBinding.cartRecycler.apply {
                    val recyclerViewState = fragmentDashboardBinding.cartRecycler.layoutManager?.onSaveInstanceState()
                    adapter = CartAdapter(it)
                    fragmentDashboardBinding.cartRecycler.layoutManager?.onRestoreInstanceState(recyclerViewState)
                    }
                }
            }
        }

 binding.apply {
                viewModel?.cartItem = cartItem
                binding.cartProductQuantity.setOnFocusChangeListener(object: View.OnFocusChangeListener{
                    override fun onFocusChange(v: View?, hasFocus: Boolean) {
                       if(!hasFocus){
                           cartItem?.quantity = if(binding.cartProductQuantity.text.toString()==""){0}else{binding.cartProductQuantity.text.toString().toInt()}
                           dashboardViewModel.updateProduct(cartItem!!)
                       }
                    }

                })
                executePendingBindings()
            }