【ANDROID STUDIO】 Query Parameter Retrofit With Kotlin Coroutines

package com.example.myapplication

import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import androidx.lifecycle.LiveData
import androidx.lifecycle.Observer
import androidx.lifecycle.liveData
import kotlinx.android.synthetic.main.activity_main.*
import retrofit2.Response

class MainActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        val retService = RetrofitInstance
            .getRetrofitInstance()
            .create(AlbumService::class.java)
        val responseLiveData: LiveData<Response<Albums>> = liveData {
            //val response = retService.getAlbums()
            val response = retService.getSortedAlbums(3)

            emit(response)
        }
        responseLiveData.observe(this, Observer {
            val albumsList = it.body()?.listIterator()
            if (albumsList != null) {
                while (albumsList.hasNext()) {
                    val albumsItem = albumsList.next()
                    val result = " " + "Album Title : ${albumsItem.title}" + "\n" +
                            " " + "Album id : ${albumsItem.id}" + "\n" +
                            " " + "User id : ${albumsItem.userId}" + "\n\n\n"
                    text_view.append(result)
                }
            }
        })

    }
}

package com.example.myapplication

import retrofit2.Response
import retrofit2.http.GET
import retrofit2.http.Query

interface AlbumService {
    @GET("/albums")
    suspend fun getAlbums() : Response<Albums>
    @GET("/albums")
    suspend fun getSortedAlbums(@Query("userId") userId:Int) :Response<Albums>

}