我将Room用作database，并在RecyclerView中列出数据。当我尝试删除其中一项时，其下方的项目会重复。

但是，当我重新启动应用程序时，重复的项目也会被删除（我之前也删除了该项目）。 我曾尝试使用notifyItemRemoved(position)，但仍然无法正常工作。

class HomeFragment : Fragment() {

    private inner class NoteViewHolder(view: View):RecyclerView.ViewHolder(view) {
       val rowName:TextView = view.findViewById(R.id.rec_name)
       val rowType:TextView = view.findViewById(R.id.rec_type)
       val rowSub:TextView = view.findViewById(R.id.rec_sub)
       val daysAgo:TextView = view.findViewById(R.id.how_many_days_ago)
}

private inner class NotesAdapter(val users:List<User>):RecyclerView.Adapter<NoteViewHolder>() {

    override fun onCreateViewHolder(parent: ViewGroup,viewType: Int): NoteViewHolder {
        val view = layoutInflater.inflate(R.layout.row_recycle,parent,false)
        return  NoteViewHolder(view)
    }

    override fun getItemCount(): Int =users.size

    override fun onBindViewHolder(holder: NoteViewHolder,position: Int) {
        val user = users[position]
        holder.apply{
            rowName.setText(user.name)
            rowSub.setText(user.subject)
            rowType.setText(user.type)
        }

        //To delete
        holder.itemView.setOnLongClicklistener {

            val builder = AlertDialog.Builder(requireContext(),R.style.Theme_AppCompat_Light_Dialog_Alert)
            builder.setTitle("Notes Returned?")
            builder.setNegativeButton("Yes",object :DialogInterface.OnClicklistener {
                override fun onClick(dialog: DialogInterface?,which: Int) {
                    (activity as Mainactivity).db.myDao().deleteData(users[position])
                    notifyItemRemoved(position)
                }
            })
            val alert = builder.create()
            alert.show()
            true
        }
    }
}

MyDao

@Dao
interface MyDao {
    @Delete
    fun deleteData(user: User)
}

User.kt

@Entity
data class User(
    val subject:String,val type:String,val name: String?,val date: String?
)

Mainactivity.kt

lateinit var db: Database
db = Room.databaseBuilder(this,Database::class.java,"User").allowMainThreadQueries().build()

如何解决此问题？