json encode array from php sql server and convert to Android - php

Question

Hi i am new in android php client server. At present, i am doing the response from php sql server sending to Android client multiple result from sql row. Previously, i sending a simple string and receive android like below:
$result_data = array(
'ResultArray' => 'success',
);
#Output the JSON data
echo json_encode($result_data);
Then in android:
// Create a JSON object from the request response
JSONObject jsonObject = new JSONObject(result);
//Retrieve the data from the JSON object
String resultLoging = jsonObject.getString("ResultArray");
Now i want to receive from database having 3 columns: id, phone, name. How would i do that? Thank for your helping

Answer 1

use the following format in php
$result = mysql_query("SELECT *FROM tablename") or die(mysql_error());
// check for empty result
if (mysql_num_rows($result) > 0)
{
// looping through all results
// products node
$response["details"] = array();
while ($row = mysql_fetch_array($result))
{
// temp user array
$product = array();
$product["id"] = $row["id"];
$product["name"] = $row["name"];
array_push($response["details"], $product);
}
// success
$response["success"] = 1;
// echoing JSON response
echo json_encode($response);
In android
get success value
int success = json.getInt(TAG_SUCCESS);
get the datas using following format
JSONArray spi = json.getJSONArray("details");
Use a for loop to get the object values in the array
for (int i = 0; i < spi.length(); i++)
{
JSONObject c = spi.getJSONObject(i);
id = c.getString("id");
}

Answer 2

Use JSONArray for multiple json result :
JSONArray jsonArray = jsonObject.getJSONArray("ResultArray");
Iterate JSONArray and get value from JSONObject :
for (int i=0;i<jsonArray.length();i++){
JSONObject json = jsonArray.getJSONObject(i);
String id = json.getString("id");
String phone = json.getString("phone");
String name = json.getString("name");
}

Answer 3

just found this, would be the best for my question
https://stackoverflow.com/a/3563464/1345454
$results = array();
while($row = mysql_fetch_array($sql))
{
$results[] = array(
'title' => base64_decode($row['title']),
'price' => $row['price'],
'seller_user' => $row['user']
);
}
$json = json_encode($results);

Answer 4

try this
$result_data = array(
'ResultArray' => 'success',
);
echo json_encode(array('result'=>$result_data));
in android
JSONParser jParser = new JSONParser();
JSONObject json = jParser.getJSONFromUrl("url of php file");
JsonArray arry = json.getJSONArray("result");
JSONObject c = arry .getJSONObject(0);
String resultarr= c.getString("ResultArray");
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
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();
// System.out.println(json);
} 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;
}
}