Kotlin RecyclerView에서 맨위로 스크롤 하면 갱신되는것 무엇인가요?

Question

Kotlin으로 RecyclerView를 만들었습니다

자동갱신은 어렵네요 수동으로라고 맨위로 스크롤 하면 갱신되게 하려고 하는데

어떻게 하는지 알려주세요

 

package com.example.realcapston

import android.content.Intent
import android.os.Bundle
import android.util.Log
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import androidx.fragment.app.Fragment
import androidx.recyclerview.widget.LinearLayoutManager
import kotlinx.android.synthetic.main.fragment_list.*
import retrofit2.Call
import retrofit2.Callback
import retrofit2.Response
import retrofit2.Retrofit
import retrofit2.converter.gson.GsonConverterFactory


class ListFragment : Fragment() {

    private val url = "https://api.overlog.io/"

    override fun onCreateView(
        inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?
    ): View? {
        return inflater.inflate(R.layout.fragment_list, container, false)
    }

    private fun setAdapter(comList: ArrayList<ComModel>) {
        mRecyclerView.adapter = ComAdapter(comList) { com -> comItemClicked(com) }
        mRecyclerView.layoutManager = LinearLayoutManager(this.context)
        mRecyclerView.setHasFixedSize(false)
    }

    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {


        val retrofit = Retrofit.Builder()
            .baseUrl(url)
            .addConverterFactory(GsonConverterFactory.create())
            .build()

        val retrofitService = retrofit.create(RetrofitInterface::class.java)


        retrofitService.getRequest().enqueue(object : Callback<List<ComModel>> {
            override fun onResponse(
                call: Call<List<ComModel>>,
                response: Response<List<ComModel>>
            ) {
                val body = response.body()

                setAdapter(body as ArrayList<ComModel>)
            }

            override fun onFailure(call: Call<List<ComModel>>, t: Throwable) {
                Log.d("통신에 실패하였습니다.", t.message)
            }
        })

    }


    private fun comItemClicked(com: ComModel?) {
//        Toast.makeText(context, "Clicked: ${com?.number}", Toast.LENGTH_SHORT).show()
        val nIntent = Intent(activity, detailActivity::class.java)
        nIntent.putExtra("comId",com?.id)
        startActivity(nIntent)
    }
}