creating login activity that need connection between android and php mysql using json and asynctask but the problem is that when i try to use this application the logCat display and error taht say :

02-07 10:30:50.466: W/EGL_genymotion(3768): eglSurfaceAttrib not implemented
02-07 10:30:57.873: W/EGL_genymotion(3768): eglSurfaceAttrib not implemented
02-07 10:30:58.329: W/INbUFFERED Reader(3768): before the buffered reader beguin
02-07 10:30:58.337: W/INbUFFERED Reader(3768): before the Parsing beguin
02-07 10:30:58.337: E/JSON Parser(3768): Error parsing data org.json.JSONException: Value <br of type java.lang.String cannot be converted to JSONObject
02-07 10:30:58.337: E/JsonObject(3768): {"message":"No User found","success":0}

this is the java code:

AndroidPHPConnectionDemo.java

============================
Code:
package pack.coderzheaven;

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

import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.message.BasicNameValuePair;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import android.app.Activity;
import android.app.ProgressDialog;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;

public class AndroidPHPConnectionDemo extends Activity {
	Button b;
	EditText et, pass;
	String Username, Password;
	TextView tv;
	HttpPost httppost;
	StringBuffer buffer;
	HttpResponse response;
	HttpClient httpclient;
	List<NameValuePair> nameValuePairs;

	String pid;

	// Progress Dialog
	private ProgressDialog pDialog;

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

	// single person url
	// ******************************************************************
	// the localhost in the google android emulator = 10.0.2.2
	// the localhost in the genymotion emulator = 10.0.3.2
	// ******************************************************************
	private static final String url_check_login = "http://10.0.3.2/check.php";

	// JSON Node names
	private static final String TAG_SUCCESS = "success";
	private static final String TAG_PERSON = "person";
	private static final String TAG_PID = "pid";
	private static final String TAG_NAME = "username";
	private static final String TAG_pass = "password";

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);

		b = (Button) findViewById(R.id.Button01);
		et = (EditText) findViewById(R.id.username);
		pass = (EditText) findViewById(R.id.password);
		tv = (TextView) findViewById(R.id.tv);

		b.setOnClickListener(new OnClickListener() {
			@Override
			public void onClick(View v) {

				// Getting complete person details in background thread
				new CheckLogin().execute();

			}
		});
	}

	/**
	 * Background Async Task to Get complete person details
	 * */
	class CheckLogin extends AsyncTask<String, String, String> {

		JSONArray productObj;

		/**
		 * Before starting background thread Show Progress Dialog
		 * */
		@Override
		protected void onPreExecute() {
			super.onPreExecute();
			pDialog = new ProgressDialog(AndroidPHPConnectionDemo.this);
			pDialog.setMessage("Loading person details. Please wait...");
			pDialog.setIndeterminate(false);
			pDialog.setCancelable(true);
			pDialog.show();
		}

		/**
		 * Getting person details in background thread
		 * */

		@Override
		protected String doInBackground(String... arg0) {

			// updating UI from Background Thread

			// Check for success tag
			int success;
			try {
				// Building Parameters
				List<NameValuePair> params = new ArrayList<NameValuePair>();
				params.add(new BasicNameValuePair("pid", pid));

				// getting person details by making HTTP request
				// Note that person details url will use GET request
				JSONObject json = jsonParser.makeHttpRequest(url_check_login,
						"GET", params);

				Log.e("JsonObject", json.toString());
				// check your log for json response
				// Log.d("Single person Details", json.toString());

				// json success tag
				success = json.getInt(TAG_SUCCESS);
				if (success == 1) {
					// successfully received person details
					productObj = json.getJSONArray(TAG_PERSON); // JSON Array

				}

				else {
					// product with pid not found
				}
			} 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 got all details
			if (productObj != null) {
				try {
					// get first product object from JSON Array
					JSONObject person = productObj.getJSONObject(0);

					et.setText(person.getString(TAG_NAME));
					pass.setText(person.getString(TAG_pass));

					Log.e("success in login", "SUCCESS IN LOGIN");

				} catch (Exception e) {

					e.printStackTrace();
				}

			}

			pDialog.dismiss();
		}
	}

}
JSONParser.java
============
Code:
package pack.coderzheaven;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
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.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.utils.URLEncodedUtils;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONException;
import org.json.JSONObject;

import android.util.Log;

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<NameValuePair> params) {

		// Making HTTP request
		try {

			// check for request method

			/*
			 * if (method == "POST") { // request method is POST //
			 * 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();
			 * 
			 * }
			 */

			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 {

			Log.w("INbUFFERED Reader", "before  the buffered reader beguin");
			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);

			}
			is.close();

			json = sb.toString().substring(0, sb.toString().length() - 1);
			json = sb.toString();
		} catch (Exception e) {
			Log.e("Buffer Error", "Error converting result " + e.toString());
		}

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

		// return JSON String
		return jObj;

	}
}
check.php
========
PHP Code:
<?php

require_once('db_config.php'); 


// array for JSON response
$response = array();
//$person = null;

//if(isset($_GET["Username"])and isset($_POST["Password"])){

  
if(isset($_GET['pid'])){
//   $username = $_POST['Username'];
//   $password = $_POST['Password'];

     
$pid $_GET['pid'];   

//   $query_search = "select username, password from members where username = '".$username."' AND password = '".$password. "'";
     
     
$query_search "select * from members where id = '".$pid."'";     
  
     
$query_exec mysql_query($query_search) or die(mysql_error());

   if (
mysql_num_rows($query_exec) > 0
   {
        
$result mysql_fetch_array($query_exec);
   
        
$person = array();
        
$person["username"]=$result["user_name"];
        
$person["password"]=$result["password"];
        
    
   
   
// success
        
$response["success"] = 1;

   
// user node
        
$response["person"] = array();

        
array_push($response["person"], $person);

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

    }
    else
    {
   
// no user found
            
$response["success"] = 0;
            
$response["message"] = "No User found";

            echo 
$response["person"];
   
// echo no users JSON
           
echo json_encode($response);
    }
}
else 
{
    
// required field is missing
    
$response["success"] = 0;
    
$response["message"] = "Required field(s) are missing";

    
// echoing JSON response
    
echo json_encode($response);
}     
?>