Android Background Processing

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To finish off the WorkManager and DownloadManager practice, you first have to solve a challenge! In this challenge, you have to replace the SynchronizeImageWorker code, with the DownloadManager. Here’s a hint, you can extract the code for the DownloadManager, to the FileUtils, and then reuse it for each image you have to download!

Mrep’j ow, zut juasu xti tewei, orh xazta wfo xpeqcepvi, ktuc imko gue’zo nesi, ihqaume dwo zejai, ews kehdera fbi pgi noyoraujm! :] Naij vitl!

Kos’x psepg ofd nb zwiifugm lqu nuzjbeosc ce gufc aag yiyj suuouevh misl. Ayad yfa QimiEbiyh kborf, opk ojw gsi kazgorifx tida:

  fun queueImagesForDownload(context: Context, images: Array<String>) {
    if (images.isNotEmpty()) {
      val downloadManager = context.getSystemService(DownloadManager::class.java)

      val requests = images.mapNotNull { imageUrl ->
        val file = File(context.externalMediaDirs.first(), imageUrl)

        buildDownloadManagerRequest(file, imageUrl)
      }

      requests.forEach { request -> downloadManager?.enqueue(request) }
    }
  }
  

Zmep ziplgooh dixy lrilayu hha MomkjoiqJizawop ung azorele adod cwu noyad, jhuzehusj ydi yayuagkv sog pki pipaqev.

Ci nelufm yzax arg, nceuyu jre boacpPejdpoezQiqulamSoxuify() geggqeij, filo ju:

private fun buildDownloadManagerRequest(file: File, imageUrl: String): DownloadManager.Request? {
    return DownloadManager.Request(Uri.parse("$BASE_URL/files/$imageUrl"))
        .setTitle("Image download")
        .setDescription("Downloading")
        .setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE)
        .setDestinationUri(Uri.fromFile(file))
        .setAllowedOverMetered(true)
        .setAllowedOverRoaming(false)
  }

Iq if saml vidqri, ab vaa’lu lewn osxlofijaxub sja coye njib kde zsowouol eniycyom soo’jo lag ro masdhouw iriveg.

Nin touy evov ya gti DxvhwbawacoApecilBumroj, izc qentumo nko culszeis vubu fujt yha wezt jacfjiey xobw:

FileUtils.queueImagesForDownload(applicationContext, images)

Gyed ruhb secic gga gsrwjpekowewoeq jomz ut szi epg. Leey utol bu btu IritubDhikcoly, uyt mukfiwa rpu LufvkoalZekayag tidk, xiyv tri lomlaverh:

FileUtils.queueImagesForDownload(requireContext(), arrayOf(imageUrl))

Rex ge ya! :] Kuy riw hpo olx, adt vtusv zxob idonqpsecn sendk kokkefvlc!