Android + Kotlin + YouTube API : Get playlist basic code

MainActivity.kt

// Largely inspired by sourcecode at : https://github.com/akoscz/YouTubePlaylist/blob/master/app/src/main/java/com/akoscz/youtube/GetPlaylistAsyncTask.java

package com.reuniware.humoristesfr

import android.os.Bundle
import android.os.StrictMode
import android.text.TextUtils
import android.widget.Toast
import androidx.appcompat.app.AppCompatActivity
import com.google.api.client.extensions.android.http.AndroidHttp
import com.google.api.client.json.gson.GsonFactory
import com.google.api.services.youtube.YouTube
import com.google.api.services.youtube.model.PlaylistItemListResponse
import com.google.api.services.youtube.model.VideoListResponse
import java.io.IOException


class MainActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        val mJsonFactory = GsonFactory()
        val mTransport = AndroidHttp.newCompatibleTransport()

        val mYouTubeDataApi = YouTube.Builder(mTransport, mJsonFactory, null)
            .setApplicationName("Humoristes FR")
            .build()

        val YOUTUBE_API_KEY = "PUT YOUR YOUTUBE API KEY HERE"

        val YOUTUBE_PLAYLIST_MAX_RESULTS = 50L;     // 50 max
        //see: https://developers.google.com/youtube/v3/docs/playlistItems/list
        val YOUTUBE_PLAYLIST_PART = "snippet";
        val YOUTUBE_PLAYLIST_FIELDS = "pageInfo,nextPageToken,items(id,snippet(resourceId/videoId))";
        //see: https://developers.google.com/youtube/v3/docs/videos/list
        val YOUTUBE_VIDEOS_PART = "snippet,contentDetails,statistics"; // video resource properties that the response will include.
        val YOUTUBE_VIDEOS_FIELDS = "items(id,snippet(title,description,thumbnails/high),contentDetails/duration,statistics)"; // selector specifying which fields to include in a partial response.

        val policy = StrictMode.ThreadPolicy.Builder().permitAll().build()
        StrictMode.setThreadPolicy(policy)

        val playlistItemListResponse: PlaylistItemListResponse
        playlistItemListResponse = try {
            mYouTubeDataApi.playlistItems()
                .list(YOUTUBE_PLAYLIST_PART)
                .setPlaylistId("PLvaYnFuMvAlY6LEeNkUTutxFJqxjDo2BR") // Put your YouTube playlist id here
                .setPageToken("")
                .setFields(YOUTUBE_PLAYLIST_FIELDS)
                .setMaxResults(YOUTUBE_PLAYLIST_MAX_RESULTS)
                .setKey(YOUTUBE_API_KEY)
                .execute()
        } catch (e: IOException) {
            e.printStackTrace()
            return
        }

        //Toast.makeText(this, playlistItemListResponse.toString(), Toast.LENGTH_LONG).show()

        val videoIds = ArrayList<String>()
        playlistItemListResponse.items.forEach{
            //Toast.makeText(this, it.snippet.resourceId.videoId, Toast.LENGTH_LONG).show()
            videoIds.add(it.snippet.resourceId.videoId)
        }


        val videoListResponse: VideoListResponse
        videoListResponse =  try {
            mYouTubeDataApi.videos()
                .list(YOUTUBE_VIDEOS_PART)
                .setFields(YOUTUBE_VIDEOS_FIELDS)
                .setKey(YOUTUBE_API_KEY)
                .setId(TextUtils.join(",", videoIds))
                .execute()
        } catch (e: IOException) {
            e.printStackTrace()
            return
        }

        videoListResponse.forEach{
            Toast.makeText(this, it.value.toString(), Toast.LENGTH_LONG).show()
        }


    }
}