【ANDROID STUDIO】 Logging Interceptor Retrofit With Kotlin Coroutines

 package com.example.myapplication

import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.widget.Toast
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() {
    private lateinit var retService: AlbumService
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        retService = RetrofitInstance
            .getRetrofitInstance()
            .create(AlbumService::class.java)


        getRequestWithQueryParameters()
        //getRequestWithPathParameters()





    }
    private fun getRequestWithQueryParameters(){
        val responseLiveData: LiveData<Response<Albums>> = liveData {
            //val response = retService.getAlbums()
            var 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)
                }
            }
        })
    }
    private fun getRequestWithPathParameters(){

        // path parameter example
        val pathResponse : LiveData<Response<AlbumsItem>> = liveData {
            val response = retService.getAlbum(3)
            emit(response)

        }




        pathResponse.observe(this, Observer {
            val title = it.body()?.title
            Toast.makeText(applicationContext, title, Toast.LENGTH_LONG).show()
        })
    }


}

package com.example.myapplication

import com.google.gson.GsonBuilder
import okhttp3.OkHttpClient
import okhttp3.logging.HttpLoggingInterceptor
import retrofit2.Retrofit
import retrofit2.converter.gson.GsonConverterFactory

class RetrofitInstance {
    companion object {
        val BASE_URL = "https://jsonplaceholder.typicode.com/"
        val interceptor = HttpLoggingInterceptor().apply {
            this.level = HttpLoggingInterceptor.Level.BODY
        }
        val client = OkHttpClient.Builder().apply {
            this.addInterceptor(interceptor)
        }.build()

        fun getRetrofitInstance(): Retrofit {
            return Retrofit.Builder()
                .baseUrl(BASE_URL)
                .client(client)
                .addConverterFactory(GsonConverterFactory.create(GsonBuilder().create()))
                .build()
        }

    }

}