您应该在父Activity或Fragment中初始化ItemsViewModel：

private val viewModel by viewModels<ItemsViewModel>()

然后，不是直接将其传递给ListAdapter，而是声明一个自定义的click listener并将其用作参数：

// Add a parameter in the adapter
class ListAdapter(
    private val clickListener: ListClickListener
) : RecyclerView.Adapter<ListAdapter.MyViewHolder>() {

    private var itemsList = emptyList<Item>()
    private lateinit var item: Item

    class MyViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {

    }

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): MyViewHolder {
        return MyViewHolder(
            LayoutInflater.from(parent.context).inflate(R.layout.item_row_layout, parent, false)
        )
    }

    override fun getItemCount(): Int {
        return itemsList.size
    }

    override fun onBindViewHolder(holder: MyViewHolder, position: Int) {
        item = itemsList.get(position)
        //always remember this technique to save the values in val type
        val currentItem = itemsList[position]
        holder.itemView.itemNameTV.text = currentItem.itemName.toString()
        holder.itemView.itemCodeTV.text = currentItem.itemCode.toString()
        holder.itemView.itemCategoryTV.text = currentItem.itemCategory.toString()
        holder.itemView.itemDescriptionTV.text = currentItem.itemDescription.toString()
        holder.itemView.itemSellingPriceTV.text = currentItem.itemSellingPrice.toString()
        holder.itemView.itemStockTV.text = currentItem.itemStock.toString()
        holder.itemView.deleteItem.setOnClickListener {
            val itName = holder.itemView.itemNameTV.text.toString()
            val itCode = holder.itemView.itemCodeTV.text.toString()
            val itCategory = holder.itemView.itemCategoryTV.text.toString()
            val itDescription = holder.itemView.itemDescriptionTV.text.toString()
            val itSellingPrice = holder.itemView.itemSellingPriceTV.text.toString()
            val itStock = holder.itemView.itemStockTV.text.toString()
            val itime = Item(0, itName, itCode, itCategory, itSellingPrice, itStock, itDescription)
            // Call the click listener
            clickListener.onClick(iitem)
        }
    }

    fun setData(item: List<Item>) {
        this.itemsList = item
        notifyDataSetChanged()

    }
}

// Click listener class
class ListClickListener(val clickListener: (item: Item) -> Unit) {
    fun onClick(item: Item) = clickListener(item)
}

最后，在父Activity或Fragment中声明ListAdapter：

val adapter = ListAdapter(ListClickListener { item -> 
    viewModel.deleteItem(item)
})

在Activity中初始化视图模型，而不是通过适配器构造函数传递它

如果您想通过MVVM和ROOM执行此操作，请执行以下步骤：
1.创建你自己的Item类，并在Dao接口下面标识delete和insert方法。
@Dao接口DaoItem {

@Delete
 suspend fun delete(item: Item)
           
@Insert        
 suspend fun insertItem(item: Item)
        }
        
        }

1.创建存储库类：
class RepositoryItem（瓦尔daoItem：（）{

suspend fun insertItem(item: Item){
            daoItem.insertItem(item)
        }
    
      suspend fun deleteItem(item: Item) {
             daoItem.delete(item)
            }
        }
    }

1.然后在MVVM类中创建一个delete方法：
public void run（val）{

fun deleteValue(item: Item) {
                 viewModelScope.launch {
                     repositoryItem.deleteItem(item:Item)
                 }
             }
         }

在适配器中使用clicklistener访问项目：

class ListAdapter(val clickListener: (Item)->Unit):RecyclerView.Adapter<ListAdapter.MyViewHolder>()
     {

class ViewHolder(item:View ):RecyclerView.ViewHolder(item){
 fun bind(item: Item,clickListener: (Item)->Unit) {

            val itName = itemView.itemNameTV.text.toString()
            val itCode = itemView.itemCodeTV.text.toString()
            val itCategory = itemView.itemCategoryTV.text.toString()
           val itime = Item(0, itName, itCode, itCategory)
   itemView.deleteItem.setOnClickListener(){
                clickListener(itime)

            }

}

在下面的步骤中，你需要在你的act或fragment类中声明mvvm类，并创建下面的方法来通过mvvm删除回收器视图的项目：

fun rowItemClicked(item: Item){
        viewModelItem.deleteValue(item)
        listAdapter.notifyDataSetChanged()
    }

和/或

override fun onCreateView(
        inflater: LayoutInflater, container: ViewGroup?,savedInstanceState: Bundle? ): View? {

        listAdapter = ListAdapter( { item:Item->rowItemClicked(item)})

}