Android login with json object empty in fetching even if php file execution in browser Chrome is ok

Question

Follows my fetching class

 public class fetchUserDataAsyncTask extends AsyncTask<Void, Void, User> {
    User user;
    GetUserCallback userCallBack;

    public fetchUserDataAsyncTask(User user, GetUserCallback userCallBack) {
        this.user = user;
        this.userCallBack = userCallBack;
    }

    @Override
    protected User doInBackground(Void... params) {
        ArrayList<NameValuePair> dataToSend = new ArrayList<>();
        dataToSend.add(new BasicNameValuePair("username", user.username));
        dataToSend.add(new BasicNameValuePair("password", user.password));

        HttpParams httpRequestParams = new BasicHttpParams();
        HttpConnectionParams.setConnectionTimeout(httpRequestParams,
                CONNECTION_TIMEOUT);
        HttpConnectionParams.setSoTimeout(httpRequestParams,
                CONNECTION_TIMEOUT);

        HttpClient client = new DefaultHttpClient(httpRequestParams);
        HttpPost post = new HttpPost(SERVER_ADDRESS
                + "FetchUserData.php");

        User returnedUser = null;

        try {
            post.setEntity(new UrlEncodedFormEntity(dataToSend));
            HttpResponse httpResponse = client.execute(post);

            HttpEntity entity = httpResponse.getEntity();
            String result = EntityUtils.toString(entity);
            JSONObject jObject = new JSONObject(result);

           if (jObject.length() != 0){
                Log.v("happened", "2");
                String name = jObject.getString("name");
                int age = jObject.getInt("age");

                returnedUser = new User(name, age, user.username, user.password);
            }



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

        return returnedUser;
    }

    @Override
    protected void onPostExecute(User returnedUser) {
        super.onPostExecute(returnedUser);
        progressDialog.dismiss();
        userCallBack.done(returnedUser);
    }
}

Php fetching file Fetch_User_Data.php

<?php

$con=mysqli_connect("localhost","root","","loginregister");

if (mysqli_connect_errno($con))
{
 echo "Failed to connect to MySQL: " , mysqli_connect_error();
}

if (isset($_POST["password"])) {$password = $_POST

["password"];}else $password = 'bimbomix';
if (isset($_POST["username"])) {$username = $_POST

["username"];}else $username = 'bimbomix';



$statement = mysqli_prepare($con, "SELECT * FROM user WHERE 

username = ? AND password = ?");
mysqli_stmt_bind_param($statement, "ss", $username, 

$password);
mysqli_stmt_execute($statement);
mysqli_stmt_store_result($statement);
mysqli_stmt_bind_result($statement, $user_id, $name, $age, 

$username, $password);

$user = array();

while(mysqli_stmt_fetch($statement)){
    $user['name'] = $name; 
    $user['age'] = $age;
    $user['username'] = $username;
    $user['password']= $password;       
}

echo json_encode($user);


mysqli_close($con);

?>

Hardcoding Test

        User returnedUser=null;
        try {

            post.setEntity(new UrlEncodedFormEntity(dataToSend));

            HttpResponse httpResponse = client.execute(post);

            HttpEntity entity = httpResponse.getEntity();

            String result = EntityUtils.toString(entity);
//until here hardcoding fills correctly returnedUser
            JSONObject jObject = new JSONObject(result);
returnedUser = new User("hello", 42, user.username, user.password);
// this is hardcoded string that let returnedUser ==null
// so perhaps problem is in jObject               

if (jObject.length() != 0){
                Log.v("happened", "2");
                String name = jObject.getString("name");
                int age = jObject.getInt("age");

              //  returnedUser = new User(name, age, user.username, user.password);
            }



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

        return returnedUser;
    }

Answer 1

I'm so sorry. Issue was simple, even if it has gone me mad for a pair of weeks! Look at fetch file "Fetch_User_Data.php" and then look at string where I call it as "FetchUserData.php" and you'll be done...