Show Progressbar Or Dialog From An Intentservice For Download Progress

I have an activity with a 'download' button which fires up DownloadManager implemented in an IntentService. Everything is working just fine and my question is: Is it possible to di

Solution 1:

Is it possible to display ProgressBar or ProgressDialog from my DownloadService (which is extended IntentService), except the progress shown in the Notification bar?

Could you write a sample code or pseudo code how I can do that? Thank you

You can use ResultReceiver to reach your goal. ResultReceiver implements Parcelable so you are able to pass it into IntentService like:

Intent i = newIntent(this, DownloadService.class);
i.putExtra("receiver", newDownReceiver(newHandler()));
<context>.startService(i);

Then in your onHandlerIntent() all what you need is to obtain receiver you passed into Intent and send current progress into ResultReceiver:

protectedvoidonHandleIntent(Intent intent) {  

   // obtaining ResultReceiver from Intent that started this IntentServiceResultReceiverreceiver= intent.getParcelableExtra("receiver");

   ...

   // data that will be send into ResultReceiverBundledata=newBundle();
   data.putInt("progress", progress);

   // here you are sending progress into ResultReceiver located in your Activity
   receiver.send(Const.NEW_PROGRESS, data);
}

And ResultReceiverwill handle data and will make update inProgressDialog. Here is implementation of ResultReceiver (make it as inner class of your Activity class):

privateclassDownReceiverextendsResultReceiver {

   publicDownloadReceiver(Handler handler) {
      super(handler);
   }

   @OverridepublicvoidonReceiveResult(int resultCode, Bundle resultData) {
      super.onReceiveResult(resultCode, resultData);
      if (resultCode == Const.NEW_PROGRESS) {
         intprogress= resultData.getInt("progress");

         // pd variable represents your ProgressDialog
         pd.setProgress(progress);
         pd.setMessage(String.valueOf(progress) + "% downloaded sucessfully.");
      }
   }
}