Android : Retriving data in android application

I have developed android application of company , whithin this application I have interface to retrive an employee information , but everytime I run the program it didn't retrive any data , and give me the code that I set when fetching the data from the database is not successful ,

here is my code

public class Search2 extends ActionBarActivity {
InputStream is=null;
String result=null;
String line=null;
int code;
TextView name;
TextView jobtitle;
TextView eID;
TextView email;
TextView phone;
TextView address;


String IDEmployee;



@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.search2);

    StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
    StrictMode.setThreadPolicy(policy);

    name=(TextView)findViewById(R.id.Empname);
    eID=(TextView)findViewById(R.id.EmpJb);
    jobtitle=(TextView)findViewById(R.id.EmpID);
    email=(TextView)findViewById(R.id.Empmail);
   phone=(TextView)findViewById(R.id.Empphone);
    address=(TextView)findViewById(R.id.Empaddress);


    IDEmployee = "2120008";
    getData();
}
public void getData() {


    ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();

    nameValuePairs.add(new BasicNameValuePair("IDEmployee",IDEmployee));

    try{

        HttpClient httpclient = new DefaultHttpClient();
        HttpPost httppost = new HttpPost("http://oilspotmobileapplication.webuda.com/employees.php");
        httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
        HttpResponse response = httpclient.execute(httppost);
        HttpEntity entity = response.getEntity();
        is = entity.getContent();
        Log.e("pass 1", "connection success ");





    }
    catch(Exception e)
    {
        Log.e("Fail 1", e.toString());
        Toast.makeText(getApplicationContext(), "Invalid IP Address",
                Toast.LENGTH_LONG).show();
    }



    try
    {
        BufferedReader reader = new BufferedReader
                (new InputStreamReader(is,"iso-8859-1"),8);
        StringBuilder sb = new StringBuilder();
        while ((line = reader.readLine()) != null)
        {
            sb.append(line + "\n");
        }
        is.close();
        result = sb.toString();
        Log.e("pass 2", "connection success ");

    }
    catch(Exception e)
    {
        Log.e("Fail 2", e.toString());
    }

    try
    {
        JSONObject json_data = new JSONObject(result);
        code=(json_data.getInt("code"));

        if(code==1)
        {
            Toast.makeText(getBaseContext(), "Information Retrieved Successfully",
                    Toast.LENGTH_SHORT).show();



            name.setText((json_data.getString("FirstName")));
            eID.setText((json_data.getString("IDEmployee")));
            email.setText((json_data.getString("EmployeeEmail")));
            phone.setText((json_data.getString("Phone")));
            address.setText((json_data.getString("PostCode")));
            jobtitle.setText((json_data.getString("JobTitle")));

        }
        else
        {
            Toast.makeText(getBaseContext(), "Sorry, Try Again Later",
                    Toast.LENGTH_LONG).show();
        }
    }
    catch(Exception e)
    {
        Log.e("Fail 3", e.toString());
    }







}}

And This is the php page

    <?php

    if(! $conn)
{
die('Could not connect: '.mysql_error());
}       
mysql_select_db("a2202757_OURDATA",$conn);

$response = array(); 



$sql=mysql_query("select IDEmployee,FirstName,JobTitle,EmployeeEmail,Phone,PostCode from employee where IDEmployee='".$_POST['IDEmployee']."'");


 if (mysql_num_rows($sql) > 0) {
    // looping through all results
    // products node


    while ($row = mysql_fetch_array($sql)) {
        // temp user array


        $response["IDEmployee"] = $row["IDEmployee"];
    $response["FirstName"] = $row["FirstName"];
        $response["JobTitle"] = $row["JobTitle"];
        $response["EmployeeEmail"] = $row["EmployeeEmail"];
        $response["Phone"] = $row["Phone"];
        $response["PostCode"] = $row["PostCode"];






    }
    // success
    $response['code']=1;

    // echoing JSON response
    echo json_encode($response);

}

 else {
    // no products found
    $response['code']=0;


    // echo no users JSON
    echo json_encode($response);

}

 mysql_close();
 ?> 

This is the message that always shown to me when I run the application

Toast.makeText(getBaseContext(), "Sorry, Try Again Later", Toast.LENGTH_LONG).show();

What is the problem ??