CODEWITHSUNDEEP
androiddownload-manager
Martin Vandzura
Martin Vandzura

Reputation: 3127

Downloadmanager request status change notification

I haven't found any info about that. Is it somehow possible listen for downloadmanager request status changes? I queue few files for download and I display it in list with download state. I receive broadcast only on DownloadManager.ACTION_DOWNLOAD_COMPLETE but I would like to receive some notification or set some listener so I will be able to track download request changes. I want display state - added to queue, downloading, downloaded...

Only way which I see is query downloadmanager and check every request about state, but I need to do it in listadapter getview method and it will be not very efficient.

Upvotes: 1

Views: 1599

Answers (1)

bclymer
bclymer

Reputation: 6761

According to the official documentation there isn't a good way of doing this. http://developer.android.com/reference/android/app/DownloadManager.html

I would recommend either starting a service or some sort of background thread that queries for the status of just your downloads every couple of seconds. (keep track of their ids in a long[], because setFilterById takes a long[])

long[] ids = new long[MyDownloadQueue.length];
// Look at all these requests I'm building!
ids[i++] = dm.enqueue(request);

Cursor cursor = dm.query(new DownloadManager.Query().setFilterById(ids));
while (cursor.moveToNext()) {
  int columnIndex = cursor.getColumnIndex(DownloadManager.COLUMN_STATUS);
  int status = cursor.getInt(columnIndex);
  int columnReason = cursor.getColumnIndex(DownloadManager.COLUMN_REASON);
  int reason = cursor.getInt(columnReason);
  // your stuff here, recording the status and reason to some in memory map
}

This way your listview won't have to do any of the work and the UI will stay smooth. There isn't really a better way that I know of however, sorry I couldn't provide an answer that didn't involve querying.

Upvotes: 2

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