List view back to top postion after updating data in arrayadapter

Question

I have a listview that refreshed every 5 secs, using a XML parsing. After refreshing, the current position of the list go back to first position. Is there any possible ways to solve this?

Answer 1

By using setAdapter() to update a list Android resets the position. Try altering the Adapter instead.

I don't know which adapter you're using so here two examples.

ArrayAdapter

adapter = list.getAdapter();
if (adapter == null) {
    // Create new adapter + list.setAdapter()
} else {
    adapter.clear();
    adapter.addAll(newData);
    adapter.notify(notifyDataSetChanged());
}

CursorAdapter

adapter.changeCursor(newCursor);

Answer 2

Use lv.smoothScrollToPosition(pos) where pos could be any int, preferably the length of the adapter, if you want the listview to autoscroll to the last added entry as it is refreshed.

public void smoothScrollToPosition (int position) 


Smoothly scroll to the specified adapter position. The view will scroll such that the indicated position is displayed.