[android help] Android - How to work with nested ListViews

this is my first question on this site and I am also new to Android. I am creating an application using an online API. I am working with this API in XML and parsing the responses into ListViews. I have reached a point where I would like to select an item from a ListView in one activity and send that information to the next activity along with another ListView containing more information for the selected item. As an example, one activity has a list of bands. Clicking on the band name will bring up the band name and a list of tour dates on the next activity. According to my API, the band's ID number is needed to access the bands tour information I am trying to pass the ID number as a search parameter but cannot get this to work. I did manage to find a decent tutorial on androidhive.info but cannot seem to be able to apply these techniques. The doInBackground() method is where my app is hanging up.

        ListView lv = getListView();

        lv.setOnItemClickListener(new OnItemClickListener() {

            @Override
            public void onItemClick(AdapterView parent, View view,
                    int position, long id) {
                // getting values from selected ListItem
                String displayName = ((TextView) view.findViewById(R.id.tvDisplayName)).getText().toString();
                String onTourUntil = ((TextView) view.findViewById(R.id.tvOnTourUntil)).getText().toString();
                String identification = ((TextView) view.findViewById(R.id.tvId)).getText().toString();

                // Starting new intent
                Intent in = new Intent(getApplicationContext(), SingleArtistActivity.class);
                in.putExtra(KEY_DISPLAY_NAME, displayName);
                in.putExtra(KEY_ID, identification);
                in.putExtra(KEY_ON_TOUR_UNTIL, onTourUntil);

                new AsyncDownload().execute(identification);

                startActivity(in);
            }
        });

}

private class AsyncDownload extends AsyncTask {

    ProgressDialog pDialog;

    @Override
    protected void onPreExecute() {
        super.onPreExecute();
        pDialog = new ProgressDialog(ArtistsSearchActivity.this);
        pDialog.setMessage("Please Wait...");

        pDialog.setCancelable(false);
        pDialog.show();
    }

    @Override
    protected String doInBackground(String... params) {

        Log.v(TAG, "query is" +  params[0]);
        String result = new ArtistCalendarHelper().getXml(params[0]);
        return result;
    }

My AsyncDownload class is called in my onClickListener. The class calls a helper that contains the URL and API key.

public class ArtistCalendarHelper {
    private static final String TAG = "ArtistCalendarHelper";
    private static final String SONGKICK_URL = "http://api.songkick.com/api/3.0/artists/";
    private static final String API_KEY = "yIekMi1hQzcFheKc";

public String getXml(String identification) {

    HttpClient httpclient = new DefaultHttpClient();

    String getParameters = "";
    try {
        getParameters = URLEncoder.encode(identification, "UTF-8") 
                + "/calendar.xml?apikey=" + URLEncoder.encode(API_KEY, "UTF-8");
    } catch (UnsupportedEncodingException e1) {
        // TODO Auto-generated catch block
        e1.printStackTrace();
    }

    String url = SONGKICK_URL + getParameters;
    // Prepare a request object
    HttpGet httpget = new HttpGet(url);

    // Execute the request
    HttpResponse response;

These methods worked for obtaining the bands name in an initial search. How could this be changed to perform a search for tour information with an argument retrieved from a ListView? Is this different from getting a search query from an EditText field? I didn't think there would be much of a difference. I have tried to include the affected code. I am not sure how much code I should provide.

.

stackoverflow.comm