Hi i have to developed listview with load more button using xml parsing in android application.

Here i have faced some problem.

my xml feed is empty means how can hide the load more button on last page.

i have used below code here.

public class CustomizedListView extends Activity {
// All static variables
private String URL = "http://dev.mmm.com/xctesting/xcart444pro/retrieve.php?page=1";
// XML node keys
static final String KEY_SONG = "Order"; 
    static final String KEY_TITLE = "orderid";
static final String KEY_DATE = "date";
static final String KEY_ARTIST = "payment_method";
    int current_page = 1;
ListView lv;
LazyAdapter adapter;
ProgressDialog pDialog; 

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    lv = (ListView) findViewById(R.id.list);

    ArrayList<HashMap<String, String>> songsList = new ArrayList<HashMap<String, String>>();

    XMLParser parser = new XMLParser();
    String xml = parser.getXmlFromUrl(URL); // getting XML from URL
    Document doc = parser.getDomElement(xml); // getting DOM element

    NodeList nl = doc.getElementsByTagName(KEY_SONG);
    // looping through all song nodes <song>
    for (int i = 0; i < nl.getLength(); i++) {
        // creating new HashMap
        HashMap<String, String> map = new HashMap<String, String>();
        Element e = (Element) nl.item(i);
        // adding each child node to HashMap key => value
        map.put(KEY_ID, parser.getValue(e, KEY_ID));
        map.put(KEY_TITLE, parser.getValue(e, KEY_TITLE));
        map.put(KEY_ARTIST, parser.getValue(e, KEY_ARTIST));
              songsList.add(map);
    }

    Button btnLoadMore = new Button(this);
    btnLoadMore.setText("Load More");

    btnLoadMore.setBackgroundResource(R.drawable.lgnbttn);
    // Adding Load More button to lisview at bottom
    lv.addFooterView(btnLoadMore);

    // Getting adapter
    adapter = new LazyAdapter(this, songsList);
    lv.setAdapter(adapter);
                btnLoadMore.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View arg0) {
            // Starting a new async task
            new loadMoreListView().execute();
        }
    });
}
    private class loadMoreListView extends AsyncTask<Void, Void, Void> {

        @Override 
        protected void onPreExecute() {
            // Showing progress dialog before sending http request
            pDialog = new ProgressDialog(
                    CustomizedListView.this);
            pDialog.setMessage("Please wait..");
            //pDialog.setIndeterminateDrawable(getResources().getDrawable(R.drawable.my_progress_indeterminate));
            pDialog.setIndeterminate(true);
            pDialog.setCancelable(false);
            pDialog.show(); 

            pDialog.setContentView(R.layout.custom_dialog);


        }
        protected Void doInBackground(Void... unused) {

                    current_page += 1;

                    // Next page request
                    URL = "http://dev.mmm.com/xctesting/xcart444pro/retrieve.php?page=" + current_page;

                    ArrayList<HashMap<String, String>> songsList = new ArrayList<HashMap<String, String>>();

                    XMLParser parser = new XMLParser();
                    String xml = parser.getXmlFromUrl(URL); // getting XML from URL
                    Document doc = parser.getDomElement(xml); // getting DOM element

                    NodeList nl = doc.getElementsByTagName(KEY_SONG);


                    NodeList nl = doc.getElementsByTagName(KEY_SONG);
                    if (nl.getLength() == 0)
                      {
                          btnLoadMore.setVisibility(View.GONE);
                          pDialog.dismiss();

                      }
                      else

                    // looping through all item nodes <item>
                    for (int i = 0; i < nl.getLength(); i++) {
                        // creating new HashMap
                        HashMap<String, String> map = new HashMap<String, String>();
                        Element e = (Element) nl.item(i);

                        // adding each child node to HashMap key => value
                        map.put(KEY_ID, parser.getValue(e, KEY_ID));
                        map.put(KEY_TITLE, parser.getValue(e, KEY_TITLE));
                        map.put(KEY_ARTIST, parser.getValue(e, KEY_ARTIST));
                 songsList.add(map);
                    }

                    // get listview current position - used to maintain scroll position
                    int currentPosition = lv.getFirstVisiblePosition();

                    // Appending new data to menuItems ArrayList
                    adapter = new LazyAdapter(
                            CustomizedListView.this,
                            songsList);
                    lv.setAdapter(adapter);
             lv.setSelectionFromTop(currentPosition + 1, 0);


            }
            });

            return (null);
        }


        protected void onPostExecute(Void unused) {
            // closing progress dialog
            pDialog.dismiss();

        }
    }
}

EDIT:

Here i have to run the app means the listview is displayed on perpage 4 items.my last page having 1 item.please refer this screenshot:http://screencast.com/t/fTl4FETd In last page i have to click the load more button means have to go next activity and successfully hide the button on empty page..please refer this screenshot:http://screencast.com/t/wyG5zdp3r

i have to check the condition for empty page:

    if (nl.getLength() == 0)
                    {
                        btnLoadMore.setVisibility(View.GONE);
                        pDialog.dismiss();

                    }

How can i write the conditon fot last page?????pleas ehelp me

Here i wish to need the o/p is hide the button on last page.

Please help me.how can i check the condition.give me some code programmatically.