Android AsyncTask Logging fails

Question

I had the following code, which was being called in a class which was registered to receive periodic (1 per second) broadcasts:

public void onReceive(Context c, Intent i) {
    Log.d("NET", "Polling server...");
    try {
        Request.getChanges();
    } catch (Exception e) {
        Log.w("NET", "Error polling server: " + e.toString());
    }
}

However, since this code was being fired off as a BroadcastReceiver, and thus getting run in the UI thread, I was getting:

Error polling server: android.os.NetworkOnMainThreadException

So I decided to try it in an AsyncTask instead:

public void onReceive(Context c, Intent i) {
    class Task extends AsyncTask<Void, Void, Void> {
        @Override
        protected Void doInBackground(Void... arg0) {
            Log.d("NET", "Polling server...");
            try {
                Request.getChanges();
            } catch (Exception e) {
                Log.w("NET", "Error polling server: " + e.toString());
            }
            return null;
        }
    }
    new Task().execute();
}

However, when I do this, I get no output whatsoever. Any idea what the issue is here? Thanks!

Answer 1

Seems you hit the same wall than me a few weeks ago. I already had one AsyncTask running perfectly, I copied the same structure for another one, tried to start it - no result. I was going already mad with it, when I reached this.

Resuming, all you have to do is:

if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.HONEYCOMB_MR1)
  new Task().execute();
else
  new Task().executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);