CODES FOR Android:

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.HashMap;

import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
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 example.david.R;
import android.app.Activity;
import android.os.AsyncTask;
import android.os.Bundle;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.Toast;

public class Viewall extends Activity {
    String JsonResult;
    ListView vx;
    JSONArray Rdetails;
    ArrayList<HashMap<String, String>>registerList;
private String URLRetrievedetails ="http://10.0.2.2/nanyonga/retrive.php";
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.viewall);
        vx=(ListView)findViewById(R.id.va);
        registerList=new ArrayList<HashMap<String, String>>();
        getData();

}
private class JsonReaddetails extends AsyncTask<String, Void, String> {
       
          @Override
          protected String doInBackground(String... params) {
             
           HttpClient httpclient = new DefaultHttpClient();
           HttpPost httppost = new HttpPost(params[0]);
           try {
            HttpResponse response = httpclient.execute(httppost);
            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) {
              ShowResult();
          }
         }
         // end async task
       
         public void getData() {
             JsonReaddetails pdetails = new JsonReaddetails();
          // passes values for the urls string array
          pdetails.execute(new String[] { URLRetrievedetails });
         }
       
         // build hash set for list view
         public void ShowResult() {
             // either you can call ArrayList here or in the method
    //personalList = new ArrayList<HashMap<String, String>>();
          try {
           JSONObject jsonResponse = new JSONObject(JsonResult);
           Rdetails = jsonResponse.getJSONArray("Register");
         // here we are looping
           for (int i = 0; i < Rdetails.length(); i++) {
              
            JSONObject y = Rdetails.getJSONObject(i);
            String first= y.getString("FirstName");
           String last = y.getString("LastName");
           String tel = y.getString("Telephone");
           String uname = y.getString("Username");
           String pass = y.getString("Password");
            String outPut ="\n\n"  +"FName=:"+" "+first+"\n"+"LName=:"+" "+last+"\n"+"Tel=:"+" "+tel+"\n"+"UserN=:"+" "+uname+"\n"+"PasswOrd=:"+pass+"\n";
            registerList.add(CreateRegister("registerdetails", outPut));
           }
          } catch (JSONException e) {
           Toast.makeText(getApplicationContext(), "Error" + e.toString(),
             Toast.LENGTH_SHORT).show();
          }
       
          SimpleAdapter simpleAdapter = new SimpleAdapter(this, registerList,android.R.layout.simple_list_item_1,
            new String[] { "registerdetails" }, new int[] { android.R.id.text1 });
          vx.setAdapter(simpleAdapter);
         }
         // this definies the table.You can use all field or you can use afew
         private HashMap<String, String> CreateRegister(String  firsname, String lastname) {
          HashMap<String, String> registerList = new HashMap<String, String>();
          registerList.put(firsname, lastname);
          return registerList;
         }
    //===============================================================================================
         // the view /display codes endes here
         //==========================================================================================