navi25

    private fun saveState(){
        if (player != null) {
            playbackPosition = player?.currentPosition ?: 0L
            currentWindowIndex = player?.currentWindowIndex ?: 0
            playWhenReady = player?.playWhenReady ?: true
        }
    }

    private fun loadState(){
        player?.apply {

navi25

    //Build MediaSource for one video and prepare player
    private fun preparePlayer(uri: Uri){
        val mediaSource = MediaSourceBuilder().build(uri)
        player?.prepare(mediaSource, true, false)
    }

    //Overloaded function to build MediaSource for whole playlist and prepare player
    private fun preparePlayer(uriList: Array<Uri>){
        val mediaSource = MediaSourceBuilder().build(uriList)
        player?.prepare(mediaSource, true, false)

navi25

package io.navendra.player

class MediaSourceBuilder {

    //Build various MediaSource depending upon the type of Media for a given video/audio uri
    fun build(uri: Uri): MediaSource {
        val userAgent = PlayerConstants.USER_AGENT
        val lastPath = uri.lastPathSegment?:""

        val defaultHttpDataSourceFactory = DefaultHttpDataSourceFactory(userAgent)

navi25

open class BaseRepository{

    suspend fun <T : Any> safeApiCall(call: suspend () -> Response<T>, errorMessage: String): T? {

        val result : Result<T> = safeApiResult(call,errorMessage)
        var data : T? = null

        when(result) {
            is Result.Success ->
                data = result.data

navi25

sealed class Result<out T: Any> {
    data class Success<out T : Any>(val data: T) : Result<T>()
    data class Error(val exception: Exception) : Result<Nothing>()
}

navi25

object BetterLog{

    private fun tag() : String{
        val stackTrace = Throwable().stackTrace
        val fileName = stackTrace[2].fileName
        val methodName = stackTrace[2].methodName
        val lineNumber = stackTrace[2].lineNumber
      
        return "$fileName::$methodName, Line - $lineNumber"
    }

navi25

class MovieActivity : AppCompatActivity(){
    
    private lateinit var tmdbViewModel: TmdbViewModel
  
     override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_movie)
       
        tmdbViewModel = ViewModelProviders.of(this).get(TmdbViewModel::class.java)
       

navi25

class MovieRepository(private val api : TmdbApi) : BaseRepository() {
  
    fun getPopularMovies() : MutableList<TmdbMovie>?{
      
      //safeApiCall is defined in BaseRepository.kt (https://gist.github.com/navi25/67176730f5595b3f1fb5095062a92f15)
      val movieResponse = safeApiCall(
           call = {api.getPopularMovie().await()},
           errorMessage = "Error Fetching Popular Movies"
      )
      

navi25

class TmdbViewModel : ViewModel(){
  
    private val parentJob = Job()

    private val coroutineContext: CoroutineContext
        get() = parentJob + Dispatchers.Default

    private val scope = CoroutineScope(coroutineContext)

    private val repository : MovieRepository = MovieRepository(ApiFactory.tmdbApi)

navi25

{
  "page": 1,
  "total_results": 19848,
  "total_pages": 993,
  "results": [
    {
      "vote_count": 2109,
      "id": 297802,
      "video": false,
      "vote_average": 6.9,