Repeat AsyncTask

Question

I have a doubt about the possibility of repeating an AsyncTask in an application for Android. I would like to repeat some operations, the download of a file from a server fo

Answer 1

I did it that way. It can try and try until (tries == MAX_RETRY) or the result is not null. A slightly modified code from accepted answer, better for me.

private class RssReaderTask extends AsyncTask> {

    // max number of tries when something is wrong
    private static final int MAX_RETRY = 3;

    @Override
    protected ArrayList doInBackground(String... params) {

        ArrayList result = null;
        int tries = 0;

        while(tries++ < MAX_RETRY && result == null) {
            try {
                Log.i("RssReaderTask", "********** doInBackground: Processing... Trial: " + tries);
                URL url = new URL(params[0]);
                RssFeed feed = RssReader.read(url);
                result = feed.getRssItems();
            } catch (Exception ex) {
                Log.i("RssReaderTask", "********** doInBackground: Feed error!");
            }
        }

        return result;
    }

    @Override
    protected void onPostExecute(ArrayList result) {
        // deal with result
    }

}