try {
        JSONObject jobj = jsonParser.getJSONFromUrl(PROFILE_URL);
        username = jobj.getString("username");
    } catch (JSONException e) {
        e.printStackTrace();
    }

<?php
session_start();

require("config.inc.php");

if (isset($_SESSION['id'])){
    $query = "SELECT id,email,username,bio FROM users WHERE id = :id";
    $query_params = array(':id' => $_SESSION['id']);

    try {
        $stmt   = $db->prepare($query);
        $result = $stmt->execute($query_params);
    }
    catch (PDOException $ex) {
        $response["success"] = 0;
        $response["message"] = "Database Error1. Please Try Again!";
        die(json_encode($response));
    }
}

$row = $stmt->fetch();
json_encode($row);

?>