title: The constructor SimpleAdapter is undefined
body: <p>I'm develping an app that makes queries on reomte databases, using Json and PHP over MySQL later will be over posgress becouse is more open.</p>
  
  <p>my problem is that my SimpleAdapter is considered undefined by the eclipse without any quickfix, the strange thing is that before adding the button when I was trying with an imput example everything was working fine. thus, I don't have any Idea of how to fix this bug.</p>
  
  <p>the code is:</p>
  
  <pre><code>import java.util.ArrayList;
  import java.util.HashMap;
  
  import org.apache.http.NameValuePair;
  import org.apache.http.message.BasicNameValuePair;
  import org.json.JSONArray;
  import org.json.JSONException;
  import org.json.JSONObject;
  
  import android.app.ListActivity;
  import android.content.Intent;
  import android.os.Bundle;
  import android.util.Log;
  import android.view.View;
  import android.widget.AdapterView;
  import android.widget.AdapterView.OnItemClickListener;
  import android.widget.Button;
  import android.widget.EditText;
  import android.widget.ListAdapter;
  import android.widget.ListView;
  import android.widget.SimpleAdapter;
  import android.widget.TextView;
  
  public class DataconectActivity extends ListActivity {
      EditText  searcher;
      Button btmsearch; 
      // adding strings that are going to be the tags of the nodes for the list view in the ListAdapter
      private static String TAG_PRODID = "codigo";
      private static final String TAG_NOMBRE = "nombre";
      private static final String TAG_DESCRIPCION = "descripcion";
      private static final String TAG_COLOR = "color";
      private static final String TAG_PESO =  "peso";
      private static final String TAG_PRECIO = "precio";
      private static final String TAG_DISPONIBILIDAD = "disponibilidad";
      private static final String TAG_INFO = "resultados";
      // remember to change the url to try it with the web server http://trialsols.webege.com/mobil.php after this is important to add at least 10.000 items to the db to ensure the query efficiency
      private static final String url ="http://192.168.1.50/mobilv1.php";
      ArrayList&lt;HashMap&lt;String, String&gt;&gt; jsonResultList = new ArrayList&lt;HashMap&lt;String, String&gt;&gt;();
      /** Called when the activity is first created. */
      @Override
      public void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          setContentView(R.layout.main);
  
  
  
          searcher = (EditText) findViewById(R.id.searchtxt);
          btmsearch = (Button) findViewById(R.id.searchbtm);
  
          btmsearch.setOnClickListener(new View.OnClickListener() {
              @Override
              public void onClick(View v) {
                  // TODO Auto-generated method stub
  
  
                  // Hashmap for ListView
  
                  String data = searcher.getText().toString()   ;
  
                  ArrayList&lt;NameValuePair&gt; nameValuePairs = new ArrayList&lt;NameValuePair&gt;();
                  nameValuePairs.add(new BasicNameValuePair("precio",data));
  
                  // Creating JSON Parser instance
                  JsonParser jParser = new JsonParser();
  
                  // getting JSON string from URL
                  JSONArray jArray = jParser.getJSONFromUrl(nameValuePairs, url);
  
  
                  try {
  
                      // looping through All JsonData 
                      for(int i = 0; i &lt; jArray.length() ; i++){
                          JSONObject json_data = jArray.getJSONObject(i);
                          String nombre = json_data.getString("nombre");
                          String prodid = json_data.getString("prodid");
                          String descripcion = json_data.getString("descripcion");
                          String color = json_data.getString("color");
                          String peso = json_data.getString("peso");
                          String precio = json_data.getString("precio");
                          String disponibilidad = json_data.getString("disponibilidad");  
                          // creating new HashMap
                          HashMap&lt;String, String&gt; map = new HashMap&lt;String, String&gt;();
  
                          // adding each child node to HashMap key =&gt; value
                          map.put(TAG_PRODID, prodid);
                          map.put(TAG_NOMBRE, nombre);
                          map.put(TAG_DESCRIPCION, descripcion);
                          map.put(TAG_COLOR, color);
                          map.put(TAG_PESO, peso);
                          map.put(TAG_PRECIO, precio);
                          map.put(TAG_DISPONIBILIDAD, disponibilidad);
                          // adding HashList to ArrayList
                          jsonResultList.add(map);
  
                      }
                  }
  
                  catch(JSONException e){
                      Log.e("log_tag", "Error parsing data "+e.toString());
                  }                
  
                  //adding the results of the parsed JSON data to a listView using a ListAdapter
                  ListAdapter adapter = new SimpleAdapter(this, jsonResultList,
                          R.layout.datalistitems,
                          new String[] { TAG_NOMBRE, TAG_PRECIO, TAG_DISPONIBILIDAD }, new int[] {
                          R.id.dbnombretxt, R.id.dbpreciotxt, R.id.dbdisponibilidadtxt });
  
                  // add in a ListActivity We need to make
                  setListAdapter(adapter);    
                  // initialize a ListView to display the single item information
                  ListView lv = getListView();
                  lv.setTextFilterEnabled(true);
                  //  generate the action when an item is clicked
                  lv.setOnItemClickListener(new OnItemClickListener() {
                      public void onItemClick(AdapterView&lt;?&gt; parent, View view,
                              int position, long id) {
                          // When clicked, create a view with the values
                          // getting values from selected ListItem
                          String name = ((TextView) view.findViewById(R.id.dbnombretxt)).getText().toString();
                          String cost = ((TextView) view.findViewById(R.id.dbpreciotxt)).getText().toString();
                          String stock = ((TextView) view.findViewById(R.id.dbdisponibilidadtxt)).getText().toString();
  
                          // Starting new intent
                          Intent in = new Intent(getApplicationContext(), SearchResults.class);
                          in.putExtra(TAG_NOMBRE, name);
                          in.putExtra(TAG_PRECIO, cost);
                          in.putExtra(TAG_DISPONIBILIDAD, stock);
                          startActivity(in);
                      }
                  });
  
              }
  
          });
  
      }
  
  } 
  </code></pre>
  
  <p>the error exactly is on:</p>
  
  <pre><code>adapter = new SimpleAdapter(this, jsonResultList,
                          R.layout.datalistitems,
                          new String[] { TAG_NOMBRE, TAG_PRECIO, TAG_DISPONIBILIDAD }, new int[] {
                          R.id.dbnombretxt, R.id.dbpreciotxt, R.id.dbdisponibilidadtxt });
  </code></pre>