Android paginada lista sin fin no funciona

El scrolview interminable no está trabajando en el listview, el artículo del listview está cargando de webservice 10 artículos están exhibiendo perpage. Listview debe cargar de webservice dinámicamente como paginado lista interminable. Soy nuevo en Android ¿Puede alguien ayudarme a moverme en la dirección correcta? Siguiente es el código

public class MainActivity extends ListActivity { ListView list; LazyAdapter adapter; JSONArray posts; // All static variables static final String URL = "website"; static final String KEY_POSTS = "posts"; static final String KEY_ID = "id"; static final String KEY_TITLE = "title"; static final String KEY_DATE = "date"; static final String KEY_CONTENT = "content"; static final String KEY_AUTHOR = "author"; static final String KEY_NAME = "name"; static final String KEY_ATTACHMENTS = "attachments"; static final String KEY_SLUG = "slug"; static final String KEY_THUMB_URL = "thumbnail"; static final String KEY_IMAGES = "images"; static final String KEY_URL = "url"; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); final Handler handler = new Handler(); Runnable runable = new Runnable() { @Override public void run() { //call the function LoadData(); //also call the same runnable handler.postDelayed(this, 40000); } }; handler.postDelayed(runable, 10); }public void LoadData(){ ArrayList<HashMap<String, String>> songsList = new ArrayList<HashMap<String, String>>(); // Creating JSON Parser instance JSONParser jParser = new JSONParser(); // getting JSON string from URL JSONObject json = jParser.getJSONFromUrl(URL); try { JSONArray posts = json.getJSONArray(KEY_POSTS); // looping through all song nodes <song> for(int i = 0; i < posts.length(); i++){ JSONObject c = posts.getJSONObject(i); // Storing each json item in variable String id = c.getString(KEY_ID); String title = c.getString(KEY_TITLE); String date = c.getString(KEY_DATE); String content = c.getString(KEY_CONTENT); // to remove all <P> </p> and <br /> and replace with "" content = content.replace("<br />", ""); content = content.replace("<p>", ""); content = content.replace("</p>", ""); //authornumber is agin JSON Object JSONObject author = c.getJSONObject(KEY_AUTHOR); String name = author.getString(KEY_NAME); String url = null; String slug = null; try { JSONArray atta = c.getJSONArray("attachments"); for(int j = 0; j < atta.length(); j++){ JSONObject d = atta.getJSONObject(j); slug = d.getString(KEY_SLUG); JSONObject images = d.getJSONObject(KEY_IMAGES); JSONObject thumbnail = images.getJSONObject(KEY_THUMB_URL); url = thumbnail.getString(KEY_URL); } } catch (Exception e) { e.printStackTrace(); } // creating new HashMap HashMap<String, String> map = new HashMap<String, String>(); // adding each child node to HashMap key => value map.put(KEY_ID, id); map.put(KEY_TITLE, title); map.put(KEY_DATE, date); map.put(KEY_NAME, name); map.put(KEY_CONTENT, content); map.put(KEY_SLUG, slug); map.put(KEY_URL, url); // adding HashList to ArrayList songsList.add(map); } }catch (JSONException e) { e.printStackTrace(); } ListView list=(ListView)findViewById(android.R.id.list); // Getting adapter by passing json data ArrayList adapter=new LazyAdapter(this, songsList); list.setAdapter(adapter); // Launching new screen on Selecting Single ListItem list.setOnItemClickListener(new OnItemClickListener() { public void onItemClick(AdapterView<?> parent, View view, int position, long id) { // getting values from selected ListItem String title = ((TextView) view.findViewById(R.id.title)).getText().toString(); String date = ((TextView) view.findViewById(R.id.date)).getText().toString(); String name = ((TextView) view.findViewById(R.id.name)).getText().toString(); String content = ((TextView) view.findViewById(R.id.content)).getText().toString(); // Starting new intent Intent in = new Intent(getApplicationContext(),SampleDesp.class); in.putExtra(KEY_TITLE, title); in.putExtra(KEY_DATE, date); in.putExtra(KEY_NAME, name); in.putExtra(KEY_CONTENT, content); startActivity(in); } }); list.setOnScrollListener(new OnScrollListener(){ @Override public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) { // TODO Auto-generated method stub } @Override public void onScrollStateChanged(AbsListView view, int scrollState) { // TODO Auto-generated method stub } }); } }