Android :: List Returns To Top After Update

I have a list that gets refreshed every 2 seconds via the Handler postDelayed() method.Every 2 seconds an AsyncTask is run that makes an HTTP GET request, turns the JSON into a list of objects, then sets the ListAdapter.My problem is that every time the task completes (so, roughly every two seconds) my list jumps back to the top, even if I have scrolled down to the middle or bottom of the list. This would be very annoying to the end user, so I need the list to update in the background, as it's doing, but the current view of the list to not jump back to the top at the completion of the AsyncTask.I can include any more code needed. I'm somewhat new to android development, so I'm not sure what is helpful to others.