Android การดึงรูปภาพจาก Database ( MySQL ) ขึ้น ImageView ต้องทำอย่างไรครับ

package com.example.name;

import android.app.ListActivity;
import android.app.ProgressDialog;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.TextView;

import org.apache.http.NameValuePair;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

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

public class ProductActivity extends ListActivity {

    // Progress Dialog
    private ProgressDialog pDialog;

    // Creating JSON Parser object
    JSONParser jParser = new JSONParser();

    ArrayList<HashMap<String, String>> productList;

    // url to get all product list
    private static String url_all_product = "http://www.example.com/file.php";

    // JSON Node names
    private static final String TAG_SUCCESS = "success";
    private static final String TAG_PRODUCT = "product";
    private static final String TAG_PID = "pdId";
    private static final String TAG_NAME = "pdName";
    private static final String TAG_SHOP = "sName";
    private static final String TAG_DISTRICT = "dtName";
    private static final String TAG_PRICE = "pdPrice";
    private static final String TAG_IMG = "pdImg";

    // product JSONArray
    JSONArray product = null;

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

        // HashMap for ListView
        productList = new ArrayList<HashMap<String, String>>();

        // Loading product in Background Thread
        new LoadProduct().execute();

        // Get listView
        ListView lv = getListView();

        // on selecting single product
        // launching product Screen
        lv.setOnItemClickListener(new AdapterView.OnItemClickListener() {

            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                // getting values from selected ListItem
                String pdId = ((TextView) view.findViewById(R.id.pdId)).getText().toString();

                // Starting new intent
                Intent intent = new Intent(getApplicationContext(), DesProductActivity.class);
                // sending tId to next activity
                intent.putExtra(TAG_PID, pdId);

                // starting new activity and expecting some response back
                startActivityForResult(intent, 100);
            }
        });

    }

    /**
     * Background Async Task to Load all type by making HTTP Request
     */
    class LoadProduct extends AsyncTask<String, String, String> {

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

        /**
         * getting All type from url
         */
        protected String doInBackground(String... args) {
            // Building Parameters
            List<NameValuePair> params = new ArrayList<NameValuePair>();
            // getting JSON string from URL
            JSONObject json = jParser.makeHttpRequest(url_all_product, "GET", params);

            // Check your log cat for JSON response
            Log.d("All Product: ", json.toString());

            try {
                // Checking for SUCCESS TAG
                int success = json.getInt(TAG_SUCCESS);

                if (success == 1) {
                    // type found
                    // Getting Array of Type
                    product = json.getJSONArray(TAG_PRODUCT);

                    // looping through All Type
                    for (int i = 0; i < product.length(); i++) {
                        JSONObject c = product.getJSONObject(i);

                        // Storing each json item in variable
                        String id = c.getString(TAG_PID);
                        String name = c.getString(TAG_NAME);
                        String shop = c.getString(TAG_SHOP);
                        String district = c.getString(TAG_DISTRICT);
                        String price = c.getString(TAG_PRICE);
                        String img = c.getString(TAG_IMG);

                        // creating new HashMap
                        HashMap<String, String> map = new HashMap<String, String>();

                        // adding each child node to HashMap key => value
                        map.put(TAG_PID, id);
                        map.put(TAG_NAME, name);
                        map.put(TAG_SHOP, shop);
                        map.put(TAG_DISTRICT, district);
                        map.put(TAG_PRICE, price);
                        map.put(TAG_IMG, img);

                        // adding HashList to ArrayList
                        productList.add(map);
                    }
                } else {
                    // no type found
                    // Launch Main Activity
                    Intent intent = new Intent(getApplicationContext(),
                            MainActivity.class);
                    // Closing all previous activities
                    intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
                    startActivity(intent);
                }
            } catch (JSONException e) {
                e.printStackTrace();
            }

            return null;
        }

        /**
         * After completing background task Dismiss the progress dialog
         * *
         */
        protected void onPostExecute(String file_url) {
            // dismiss the dialog after getting all type
            pDialog.dismiss();
            // updating UI from Background Thread
            runOnUiThread(new Runnable() {
                public void run() {
                    /**
                     * Updating parsed JSON data into ListView
                     * */
                    ListAdapter adapter = new SimpleAdapter(
                            ProductActivity.this, productList,
                            R.layout.product_row, new String[]{TAG_PID, TAG_NAME, TAG_SHOP, TAG_DISTRICT, TAG_PRICE, TAG_IMG},
                            new int[]{R.id.pdId, R.id.pdName, R.id.sName, R.id.dtName, R.id.pdPrice, R.id.pdImg});
                    // updating listView
                    setListAdapter(adapter);
                }
            });

        }

    }
}

 
/*
 * Following code will list all the products
 */
 
// array for JSON response
$response = array();
 
// include db connect class
require_once __DIR__ . '/db_connect.php';
 
// connecting to db
$db = new DB_CONNECT();
 
// get all products from products table
$result = mysql_query("SELECT product.pd_id,
							  product.pd_name,
							  product.pd_price,
							  product.s_name,
							  shop.s_name,
							  shop.dt_name,
							  product.pd_img 
							  		FROM product INNER JOIN shop ON product.s_name = shop.s_name
							  			Order By pd_name") or die(mysql_error());
 
// check for empty result
if (mysql_num_rows($result) > 0) {
    // looping through all results
    // products node
    $response["product"] = array();
 
    while ($row = mysql_fetch_assoc($result)) {
		$response["product"][] = array( "pdId" => $row["pd_id"], 
										"pdName" => $row["pd_name"],
										"pdPrice" => $row["pd_price"],
										"sName" => $row["s_name"],
										"dtName" => $row["dt_name"],
										"pdImg" => $row["pd_img"] );
    }
    // success
    $response["success"] = 1;
 
    // echoing JSON response
    echo json_encode($response);
} else {
    // no products found
    $response["success"] = 0;
    $response["message"] = "No products found";
 
    // echo no users JSON
    echo json_encode($response);
}