title: Can't resume download
body: <p>I want to download a big (zip) file from my server. It's about 440MB. I'm using android download service. </p>
  
  <p>Here is my code:</p>
  
  <pre><code>DownloadManager dm = (DownloadManager) getSystemService(DOWNLOAD_SERVICE);
  Request request = new Request(Uri.parse(SERVER_PATH));
  request.setTitle(getString(R.string.title_download));
  request.setDescription(getString(R.string.desc_download));
  File mapDir = new File(Environment.getExternalStorageDirectory() + DEVICE_PATH_PART);
  File mapPartFile = new File(Environment.getExternalStorageDirectory() + DEVICE_PATH_PART + MAP_PACKFILE + EXT_INPROGRESS);
  request.setDestinationUri(Uri.fromFile(mapPartFile));
  enqueue = dm.enqueue(request);
  </code></pre>
  
  <p>Download start fine. I can see my file in download manager. But when occurs some network problems (connection break), download finish with error 1008 and partial file is <strong>removed from my directory</strong>. 
  And this is my problem and question: 
  <strong>How can I force download service to not remove partially file from my destination directory, in order to resume download process ?</strong></p>
  
  <p>The side question or problem is: when I downloading 440meg file from my app, then download process is breaks many times (with cant resume error and after that with no possibility do resume download). But if I download same file through download manager application directly in android, everything is ok. And I don't know why. The only error I'm getting in receiver is 1008 about cant resume. Is there anybody with same problem?</p>
  
  <p>Thank you.</p>