help with login app

everytime i press the Submit button on my login, it closes, i dont know what is the prob here..
..i am using XAMPP(MySql and Apache are both started)..
..i am using localhost/phpmyadmin
..my database is named "newdatabase"
..my table for login is named "mytable"
..inside "mytable" is [ss_num] and [passs] (these are correct(ss_num = username | passs = password))

//start
package com.example.citizenschartersss;

import java.io.BufferedReader;

import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.ResponseHandler;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.BasicResponseHandler;
import org.apache.http.message.BasicNameValuePair;
import org.json.JSONException;
import org.json.JSONObject;

import android.app.Activity;
import android.app.AlertDialog;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;

import android.os.AsyncTask;
import android.os.Bundle;
import android.os.StrictMode;
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 Member_Log_In extends Activity implements OnClickListener{

private EditText user, pass;

private Button mSubmit, mRegister;

JSONParser jsonParser = new JSONParser();
private static final String LOGIN_URL = "h.t.t.p://10.0.2.2/adrx/logins.php";
private static final String TAG_SUCCESS = "success";
private static final String TAG_MESSAGE = "message";

@override

protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_member_log_in);

user = (EditText)findViewById(R.id.username);
pass = (EditText)findViewById(R.id.password);
mSubmit = (Button)findViewById(R.id.bLogin);

mSubmit.setOnClickListener(this);

}

@override
public void onClick(View v) {
// TODO Auto-generated method stub
if(v==mSubmit){

new loglogin().execute();

}

}

class loglogin extends AsyncTask {

String username = user.getText().toString();

String password = pass.getText().toString();

@override

protected String doInBackground(String... args) {

int success;

try {

List params = new ArrayList();

params.add(new BasicNameValuePair("ss_num", username));
params.add(new BasicNameValuePair("passs", password));

JSONObject json = jsonParser.makeHttpRequest(LOGIN_URL, "POST", params);

// Log.d("request!", "starting");
Log.d("Login attempt", json.toString());

success = json.getInt(TAG_SUCCESS);

if (success == 1) {

Log.d("Login Successful!", json.toString());
Toast.makeText(getApplicationContext(), "SUCCESS!", Toast.LENGTH_SHORT).show();

return json.getString(TAG_MESSAGE);

}else{

Log.d("Login Failure!", json.getString(TAG_MESSAGE));
Toast.makeText(getApplicationContext(), "FAILED!", Toast.LENGTH_SHORT).show();

return json.getString(TAG_MESSAGE);

}

} catch (JSONException e) {

e.printStackTrace();

}

return null;

}
}
}

// ----------------------------------------

this is my php code, logins.php

$response = array();

if (isset($_POST['ss_num']) && isset($_POST['passs'])) {

$ss_num = $_POST['ss_num'];
$passs = $_POST['passs'];

require_once DIR . '/connect.php';

$db = new DB_CONNECT();

$result = mysql_query("SELECT * FROM mytable WHERE ss_num='$ss_num' and passs='$passs'");

if ($result) {
$response["success"] = 1;
$response["message"] = "new data saved....";
echo json_encode($response);
} else {
$response["success"] = 0;
$response["message"] = "Oops! An error occurred.";
echo json_encode($response);
}
}

//this is my JSONParser

public class JSONParser {

static InputStream is = null;
static JSONObject jObj = null;
static String json = "";

// constructor
public JSONParser(){

}

// function get json from url
// by making HTTP POST or GET mehtod
public JSONObject makeHttpRequest(String url, String method,
List params) {

// Making HTTP request
try {

// check for request method
if(method == "POST"){
// request method is POST
// defaultHttpClient
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(url);
httpPost.setEntity(new UrlEncodedFormEntity(params));

HttpResponse httpResponse = httpClient.execute(httpPost);
HttpEntity httpEntity = httpResponse.getEntity();
is = httpEntity.getContent();

}else if(method == "GET"){
// request method is GET
DefaultHttpClient httpClient = new DefaultHttpClient();
String paramString = URLEncodedUtils.format(params, "utf-8");
url += "?" + paramString;
HttpGet httpGet = new HttpGet(url);

HttpResponse httpResponse = httpClient.execute(httpGet);
HttpEntity httpEntity = httpResponse.getEntity();
is = httpEntity.getContent();
}

} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}

try {
BufferedReader reader = new BufferedReader(new InputStreamReader(
is, "iso-8859-1"), 8);
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
is.close();
json = sb.toString();
} catch (Exception e) {
Log.e("Buffer Error", "Error converting result " + e.toString());
}

// try parse the string to a JSON object
try {
jObj = new JSONObject(json);
} catch (JSONException e) {
Log.e("JSON Parser", "Error parsing data " + e.toString());
}

// return JSON String
return jObj;

}

}

//----------

what is missing in the code? i cant seem to find the error.. please help, its for my thesis

P.S. : private static final String LOGIN_URL = "h.t.t.p://10.0.2.2/adrx/logins.php"; << dont mind this, i added dots to http cause of this >> "To prevent spam in our forums, new users may not post links to external sites."