Trying to get the following info from MySQL onto Android app. PHP works so must be something with android

Question

Below is the PHP code. The code is meant to display all from a table where the username equals a value from android. When I run this in postman using both get and post this works fine and returns the JSON as such.

require_once 'connection.php';

class Get_game
{

    private $db;
    private $connection;

    function __construct()
    {

        $this->db = new DB_Connection();
        $this->connection = $this->db->get_connection();

    }

    public function get_game_id($username)
    {

        //$query = "select * from volley";
        $query = "select * from volley WHERE username = '".$username."'";


        $result = mysqli_query($this->connection, $query) or die ("Error in Selecting " . mysqli_error($this->connection));

        //create an array
        $emparray = array();
        while ($row = mysqli_fetch_assoc($result)) {
            $emparray = $row;
        }

        $data = array('Game_ids' => $emparray);
        echo json_encode( $data);

        //close the db connection
        mysqli_close($this->connection);



    }
}




$game = new Get_game();

if (isset($_GET['username'])) {
    $username = $_GET['username'];

    if (!empty($username)) {
        $game->get_game_id($username);
    } else {
        echo("error");
    }

}

However, when I try to run on the Android side of things the code will not display. I have played around with get and post but nothing seems to work. Below is the android code.

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.widget.TextView;

import com.android.volley.AuthFailureError;
import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.JsonObjectRequest;
import com.android.volley.toolbox.Volley;
import org.json.JSONException;
import org.json.JSONObject;

import java.util.HashMap;
import java.util.Map;

import static com.android.volley.Request.*;


public class MainActivity extends AppCompatActivity {
    // Will show the string "data" that holds the results
    TextView results;
    // URL of object to be parsed
    String JsonURL = "http://192.168.0.14/simplifiedcoding/volleyRegister.php";
    // This string will hold the results
    String data = "";
    // Defining the Volley request queue that handles the URL request concurrently
    RequestQueue requestQueue;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        // Creates the Volley request queue
        requestQueue = Volley.newRequestQueue(this);

        // Casts results into the TextView found within the main layout XML with id jsonData
        results = (TextView) findViewById(R.id.jsonData);

        // Creating the JsonObjectRequest class called obreq, passing required parameters:
        //GET is used to fetch data from the server, JsonURL is the URL to be fetched from.
        JsonObjectRequest obreq = new JsonObjectRequest(Method.POST, JsonURL, null,
                // The third parameter Listener overrides the method onResponse() and passes
                //JSONObject as a parameter
                new Response.Listener<JSONObject>() {

                    // Takes the response from the JSON request
                    @Override
                    public void onResponse(JSONObject response) {
                        try {
                            JSONObject obj = response.getJSONObject("Game_ids");
                            // Retrieves the string labeled "colorName" and "description" from
                            //the response JSON Object
                            //and converts them into javascript objects
                            String id = obj.getString("id");
                            String username = obj.getString("username");
                            String password = obj.getString("password");
                            String email = obj.getString("email");

                            // Adds strings from object to the "data" string
                            data += "Color Name: " + id +
                                    "nDescription : " + username + "pass" + password + "email" + email;

                            // Adds the data string to the TextView "results"
                            results.setText(data);
                        }
                        // Try and catch are included to handle any errors due to JSON
                        catch (JSONException e) {
                            // If an error occurs, this prints the error to the log
                            e.printStackTrace();
                        }
                    }
                },
                // The final parameter overrides the method onErrorResponse() and passes VolleyError
                //as a parameter
                new Response.ErrorListener() {
                    @Override
                    // Handles errors that occur due to Volley
                    public void onErrorResponse(VolleyError error) {
                        Log.e("Volley", "Error");
                    }
                }){
            @Override
            protected Map<String, String> getParams() throws AuthFailureError {
                HashMap<String,String> hashMap = new HashMap<String, String>();
                String username = "cmac";
                hashMap.put("username", username);

                return hashMap;
            }
        };

        // Adds the JSON object request "obreq" to the request queue
        requestQueue.add(obreq);
    }
}