downloadRequest.kt

  
private fun downloadMedia(){
  
  //the download request
            val helper = context?.let { DownloadHelper.forProgressive(it, the URI of the media) }
            helper?.prepare(object : DownloadHelper.Callback {
                override fun onPrepared(helper: DownloadHelper) {
                    val json = JSONObject()
                  //extra data about the download like title, artist e.tc below is an example
                    json.put("title" "Download like youtube")
                    json.put("artist" "Promise Ochornma")
                    val download =
                        helper.getDownloadRequest(A unique ID for each download, Util.getUtf8Bytes(json.toString()))
             //sending the request to the download service
                    context?.let {
                        DownloadService.sendAddDownload(
                            it,
                            MyDownload::class.java,
                            download,
                            true
                        )
                    }
                }

                override fun onPrepareError(helper: DownloadHelper, e: IOException) {
                    e.printStackTrace()
                    Toast.makeText(context, e.localizedMessage, Toast.LENGTH_SHORT).show()
                }
            })
          
        } 
    }