SimpleAdapter sAdapter = null;

            String[] keys = { Feeds.TITLES, Feeds.KEY };
            int[] ids = { android.R.id.text1, android.R.id.text2 };

            if (sAdapter == null) {
                sAdapter = new SimpleAdapter(Main.this, fetchedData,
                        android.R.layout.simple_list_item_2, keys, ids);
                setListAdapter(sAdapter);
            }

else
                sAdapter.notifyDataSetChanged();