i need to get the values to a textview .can anyone help me ?

See more:

Mobile

Android

database

JSON

package com.example.get;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;













import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends Activity implements OnClickListener{
private EditText user;
private Button get;
TextView txtFname;
TextView txtMname;
TextView txtLname;

JSONObject hay;
// Progress Dialog
private ProgressDialog pDialog;

// JSON parser class
JSONParser jsonParser = new JSONParser();


private static final String LOGIN_URL = "http://www.digiassistant.comuf.com/projectphp/test.php"; // change to the webhost

//testing from a real server:
//private static final String LOGIN_URL = "http://www.yourdomain.com/webservice/login.php";

//JSON element ids from repsonse of php script:
private static final String TAG_SUCCESS = "success";
private static final String TAG_MESSAGE = "message";

@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

//setup input fields
user = (EditText)findViewById(R.id.user);
txtFname = (TextView) findViewById(R.id.fname);
txtMname = (TextView) findViewById(R.id.lname);
txtLname = (TextView) findViewById(R.id.mname);


//setup buttons
get = (Button)findViewById(R.id.get);

//register listeners
get.setOnClickListener(this);



}



@Override
public void onClick(View v) {
// TODO Auto-generated method stub

new AttemptLogin().execute();

}

class AttemptLogin extends AsyncTask<string,> {

/**
* Before starting background thread Show Progress Dialog
* */
boolean failure = false;

@Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(MainActivity.this);
pDialog.setMessage("Attempt login...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(true);
pDialog.show();
}


@Override
protected String doInBackground(String... args) {
// TODO Auto-generated method stub
// Check for success tag
int success;
String username = user.getText().toString();


try {
// Building Parameters
List<namevaluepair> params = new ArrayList<namevaluepair>();
params.add(new BasicNameValuePair("username", username));

Log.d("request!", "starting");
// getting product details by making HTTP request
JSONObject json = jsonParser.makeHttpRequest(
LOGIN_URL, "POST", params);

// check your log for json response
Log.d("Login attempt", json.toString());

// json success tag
success = json.getInt(TAG_SUCCESS);
if (success == 1) {
Log.d("Login Successful!", json.toString());

///

//
//Intent i = new Intent(Login.this, MainActivity.class);

//finish();
//startActivity(i);
//finish();
return json.getString(TAG_MESSAGE);
}else{
Log.d("Login Failure!", json.getString(TAG_MESSAGE));
return json.getString(TAG_MESSAGE);

}
} catch (JSONException e) {
e.printStackTrace();
}

return null;

}
/**
* After completing background task Dismiss the progress dialog
* **/
protected void onPostExecute(String file_url) {
// dismiss the dialog once product deleted
pDialog.dismiss();
try{
JSONObject json = null;
JSONObject hay = new JSONObject ((Map) json);
JSONArray user = hay.getJSONArray("user");
JSONObject jb= user.getJSONObject(0);
String firstname = jb.getString("firstname");
String middlename = jb.getString("middlename");
String lastname = jb.getString("lastname");

// displaying all data in textview

txtFname.setText("Firstname: " + firstname);
txtMname.setText("Middle Name: " + middlename);
txtLname.setText("Last Name " + lastname);
}catch(Exception e)
{
e.printStackTrace();
}
if (file_url != null){
Toast.makeText(MainActivity.this, file_url, Toast.LENGTH_LONG).show();
}

}

}

}

when i run this i get post available only .
it doesnt update the txtviews



here is my php file




require('config.inc.php');


if (!empty($_POST)) {

//initial query
$query = "Select last_name, first_name, middle_initial FROM admin where username = :user";

$query_params = array(':user' => $_POST['username']);

//execute query
try {
$stmt = $db -> prepare($query);
$result = $stmt -> execute($query_params);
} catch (PDOException $ex) {
$response["success"] = 0;
$response["message"] = "Database Error!";
die(json_encode($response));
}

// Finally, we can retrieve all of the found rows into an array using fetchAll
$rows = $stmt -> fetchAll();

if ($rows) {
$response["success"] = 1;
$response["message"] = "Post Available!";
$response["user"] = array();

foreach($rows as $row) {
$user = array();
// $user["designation"] = $row["designation"];
$user["middlename"] = $row["middle_initial"];
$user["firstname"] = $row["first_name"];
$user["lastname"] = $row["last_name"];

//update our repsonse JSON data
array_push($response["user"], $user);
}

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

} else {
$response["success"] = 0;
$response["message"] = "No user available!";
die(json_encode($response));
}

} else {}


?>

<form action="test.php" method="POST">
Username: <input type="text" name="username">
<input type="submit" value="Submit">
</form>