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copied!<p>You can check this link for xml parsing from xml. <a href="http://www.androidhive.info/2012/02/android-custom-listview-with-image-and-text/" rel="nofollow">http://www.androidhive.info/2012/02/android-custom-listview-with-image-and-text/</a></p> <p>In your activity you are developing the <code>AsyncTask</code> but you forgot to override <code>onPreExecute</code> method. See this example for how to develop <code>AsyncTask</code> in your activity.</p> <pre><code>package com.androidhive.jsonparsing; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.UnsupportedEncodingException; import java.util.ArrayList; import java.util.HashMap; import org.apache.http.HttpEntity; import org.apache.http.HttpResponse; import org.apache.http.client.ClientProtocolException; import org.apache.http.client.methods.HttpPost; import org.apache.http.impl.client.DefaultHttpClient; import org.json.JSONArray; import org.json.JSONException; import org.json.JSONObject; import android.app.ListActivity; import android.app.ProgressDialog; import android.content.Intent; import android.os.AsyncTask; import android.os.Bundle; import android.util.Log; import android.view.View; import android.widget.AdapterView; import android.widget.AdapterView.OnItemClickListener; import android.widget.ListAdapter; import android.widget.ListView; import android.widget.SimpleAdapter; import android.widget.TextView; public class AndroidJSONParsingActivity extends ListActivity { // url to make request private static String url = "http://api.androidhive.info/contacts/"; // JSON Node names private static final String TAG_CONTACTS = "contacts"; private static final String TAG_ID = "id"; private static final String TAG_NAME = "name"; private static final String TAG_EMAIL = "email"; private static final String TAG_ADDRESS = "address"; private static final String TAG_GENDER = "gender"; private static final String TAG_PHONE = "phone"; private static final String TAG_PHONE_MOBILE = "mobile"; private static final String TAG_PHONE_HOME = "home"; private static final String TAG_PHONE_OFFICE = "office"; static InputStream is = null; static JSONObject jObj = null; static String json = ""; // contacts JSONArray JSONArray contacts = null; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); new GetEventsTask().execute(""); } protected class GetEventsTask extends AsyncTask<String, Integer, ArrayList<HashMap<String, String>>> { protected ArrayList<HashMap<String, String>> contactList; private final ProgressDialog dialog = new ProgressDialog( AndroidJSONParsingActivity.this); //PreExecute Method protected void onPreExecute() { this.dialog.setMessage("Loading, Please Wait.."); this.dialog.setCancelable(false); this.dialog.show(); } //doInBackground Method @Override protected ArrayList<HashMap<String, String>> doInBackground( String... params) { contactList = new ArrayList<HashMap<String, String>>(); // Making HTTP request try { // defaultHttpClient DefaultHttpClient httpClient = new DefaultHttpClient(); HttpPost httpPost = new HttpPost(url); HttpResponse httpResponse = httpClient.execute(httpPost); HttpEntity httpEntity = httpResponse.getEntity(); is = httpEntity.getContent(); BufferedReader reader = new BufferedReader( new InputStreamReader(is, "iso-8859-1"), 8); StringBuilder sb = new StringBuilder(); String line = null; while ((line = reader.readLine()) != null) { sb.append(line + "\n"); } is.close(); json = sb.toString(); } catch (UnsupportedEncodingException e) { e.printStackTrace(); } catch (ClientProtocolException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } // try parse the string to a JSON object try { jObj = new JSONObject(json); Log.i("json objects",""+json); } catch (JSONException e) { Log.e("JSON Parser", "Error parsing data " + e.toString()); } try { // Getting Array of Contacts contacts = jObj.getJSONArray(TAG_CONTACTS); // looping through All Contacts for (int i = 0; i < contacts.length(); i++) { JSONObject c = contacts.getJSONObject(i); // Storing each json item in variable String id = c.getString(TAG_ID); String name = c.getString(TAG_NAME); String email = c.getString(TAG_EMAIL); String address = c.getString(TAG_ADDRESS); String gender = c.getString(TAG_GENDER); // Phone number is agin JSON Object JSONObject phone = c.getJSONObject(TAG_PHONE); String mobile = phone.getString(TAG_PHONE_MOBILE); String home = phone.getString(TAG_PHONE_HOME); String office = phone.getString(TAG_PHONE_OFFICE); // creating new HashMap HashMap<String, String> map = new HashMap<String, String>(); // adding each child node to HashMap key => value map.put(TAG_ID, id); map.put(TAG_NAME, name); map.put(TAG_EMAIL, email); map.put(TAG_PHONE_MOBILE, mobile); // adding HashList to ArrayList contactList.add(map); } } catch (JSONException e) { e.printStackTrace(); } return contactList; } //onPostExecute Method protected void onPostExecute(ArrayList<HashMap<String, String>> result) { ListAdapter adapter = new SimpleAdapter(getApplicationContext(), contactList, R.layout.list_item, new String[] { TAG_NAME, TAG_EMAIL, TAG_PHONE_MOBILE }, new int[] { R.id.name, R.id.email, R.id.mobile }); // selecting single ListView item ListView lv = getListView(); lv.setAdapter(adapter); // Launching new screen on Selecting Single ListItem lv.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { // getting values from selected ListItem String name = ((TextView) view.findViewById(R.id.name)).getText().toString(); String cost = ((TextView) view.findViewById(R.id.email)).getText().toString(); String description = ((TextView) view.findViewById(R.id.mobile)).getText().toString(); // Starting new intent Intent in = new Intent(getApplicationContext(),SingleMenuItemActivity.class); in.putExtra(TAG_NAME, name); in.putExtra(TAG_EMAIL, cost); in.putExtra(TAG_PHONE_MOBILE, description); startActivity(in); } }); if (this.dialog.isShowing()) { this.dialog.dismiss(); } } } } </code></pre>

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