public class RandomUserSearchActivity extends Activity {
    private String jsonResult;
    private String url = "http://testapp.wc.lt/_TEST.php";
    private ListView listView;

    Button btnRandom;

    EditText inputAgeFrom;
    EditText inputAgeTo;

    private ProgressDialog pDialog;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.random_user_find);
        listView = (ListView) findViewById(R.id.listView1);
        inputAgeFrom = (EditText) findViewById(R.id.inputAgeFrom);
        inputAgeTo = (EditText) findViewById(R.id.inputAgeTo);
        btnRandom = (Button)findViewById(R.id.btnRandomUser);
        btnRandom.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                accessWebService();
            }
        });

 }

 @Override
 public boolean onCreateOptionsMenu(Menu menu) {
     // Inflate the menu; this adds items to the action bar if it is present.
     //getMenuInflater().inflate(R.menu.main, menu);
     return true;
 }

 // Async Task to access the web
 private class JsonReadTask extends AsyncTask<String, Void, String> {

     protected void onPreExecute() {
         super.onPreExecute();
         pDialog = new ProgressDialog(RandomUserSearchActivity.this);
         pDialog.setMessage("Loading product details. Please wait...");
         pDialog.setIndeterminate(false);
         pDialog.setCancelable(true);
         pDialog.show();
     }
     @Override
     protected String doInBackground(String... params) {
         HttpClient httpclient = new DefaultHttpClient();
         HttpPost httppost = new HttpPost(url);

         //List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);
           // nameValuePairs.add(new BasicNameValuePair("ageSearchFrom", "5"));
           // nameValuePairs.add(new BasicNameValuePair("ageSearchTo", "25"));

         String ageFrom = inputAgeFrom.getText().toString();
         String ageTo = inputAgeFrom.getText().toString();

         try {

             List <NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(1);
             nameValuePairs.add(new BasicNameValuePair("ageSearchFrom", ageFrom));
             //nameValuePairs.add(new BasicNameValuePair("ageSearchTo", ageTo));
             httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));

             HttpResponse response = httpclient.execute(httppost);

             //httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));


             jsonResult = inputStreamToString(
                     response.getEntity().getContent()).toString();
         }

         catch (ClientProtocolException e) {
             e.printStackTrace();
         } catch (IOException e) {
             e.printStackTrace();
         }
         return null;

     }

     private StringBuilder inputStreamToString(InputStream is) {
         String rLine = "";
         StringBuilder answer = new StringBuilder();
         BufferedReader rd = new BufferedReader(new InputStreamReader(is));

         try {
             while ((rLine = rd.readLine()) != null) {
                 answer.append(rLine);
             }
         }

         catch (IOException e) {
             // e.printStackTrace();
             Toast.makeText(getApplicationContext(),
                     "Error..." + e.toString(), Toast.LENGTH_LONG).show();
         }
         return answer;
     }

  @Override
  protected void onPostExecute(String result) {
      pDialog.dismiss();
      ListDrawer();
  }
 }// end async task


 public void accessWebService() {
  JsonReadTask task = new JsonReadTask();
  // passes values for the urls string array
  task.execute(new String[] { url });
 }

 // build hash set for list view
 public void ListDrawer() {
  List<Map<String, String>> employeeList = new ArrayList<Map<String, String>>();



  try {
   JSONObject jsonResponse = new JSONObject(jsonResult);
   JSONArray jsonMainNode = jsonResponse.optJSONArray("user");

   for (int i = 0; i < jsonMainNode.length(); i++) {
    JSONObject jsonChildNode = jsonMainNode.getJSONObject(i);
    String name = jsonChildNode.optString("name");
    String number = jsonChildNode.optString("age");
    String outPut = name + "-" + number;
    employeeList.add(createEmployee("employees", outPut));
   }
  } catch (JSONException e) {
   Toast.makeText(getApplicationContext(), "Error" + e.toString(),
     Toast.LENGTH_SHORT).show();
  }

  SimpleAdapter simpleAdapter = new SimpleAdapter(this, employeeList,
    android.R.layout.simple_list_item_1,
    new String[] { "employees" }, new int[] { android.R.id.text1 });
  listView.setAdapter(simpleAdapter);
 }

 private HashMap<String, String> createEmployee(String name, String number) {
  HashMap<String, String> employeeNameNo = new HashMap<String, String>();
  employeeNameNo.put(name, number);
  return employeeNameNo;
 }
}