How to receive status of download manager intent until download success or failed

Question

Here's my problem. I'm trying to download file from my server using download manager intent via Asynctask. in my doInBackground of asynctask class, i was call download manager intent, and doinBackground will return boolean value when download finish (Success or Failed). Here's my code

  protected Boolean doInBackground(String... f_url) {
        boolean flag = true;
        boolean downloading =true;
        try{
            DownloadManager mManager = (DownloadManager) getSystemService(Context.DOWNLOAD_SERVICE);            
                           Request mRqRequest = new Request(
                                   Uri.parse("http://"+model.getDownloadURL()));
                           long idDownLoad=mManager.enqueue(mRqRequest);
                           DownloadManager.Query query = null;
                           query = new DownloadManager.Query();
                           Cursor c = null;
                             if(query!=null) {
                                        query.setFilterByStatus(DownloadManager.STATUS_FAILED|DownloadManager.STATUS_PAUSED|DownloadManager.STATUS_SUCCESSFUL|
                                                DownloadManager.STATUS_RUNNING|DownloadManager.STATUS_PENDING);                                         
                             } else {
                        return flag;
                            }
                             c = mManager.query(query);
                                if(c.moveToFirst()) { 
            int status =c.getInt(c.getColumnIndex(DownloadManager.COLUMN_STATUS)); 


                               while (downloading)
                               {    Log.i ("FLAG","Downloading");
                                   if (status==DownloadManager.STATUS_SUCCESSFUL)
                                   {    Log.i ("FLAG","done");
                                       downloading = false;
                                       flag=true;
                                       break;      
                                   }
                                   if (status==DownloadManager.STATUS_FAILED)
                                   {Log.i ("FLAG","Fail");
                                       downloading = false;
                                       flag=false;
                                      break;
                                   }
                       c.moveToFirst();
                               }
        }
                            return flag;
        }
        catch (Exception e)
        {
             flag = false;
                return flag;
        }    
    }

But DownloadManager status never jump on DownloadManager.STATUS_SUCCESSFUL or DownloadManager.STATUS_FAILED.

Answer 1

There's no need for the AsyncTask or the synchronous query. DownloadManager is already asynchronous. You should register a BroadcastReceiver for ACTION_DOWNLOAD_COMPLETE so that you get notified when the download completes (or fails).

There's a very good example at http://blog.vogella.com/2011/06/14/android-downloadmanager-example