Displaying null values after first users login inside android

Question

I have 3 fragments inside an app and in one of them I display users name from the SQLite database. What happens is when I register a new user and login first time with it, inside the textview where the users name suppose to appear, it displays NULL value, but when I logout and login again with the same user, name appears as it should.

After registering user, all the data is inserted inside a database, I have checked.

Any ideas what can cause this problem? I will add some code on request as I have no idea which part of the code, fragments or java files might cause this..

EDITED

I have added some code to help resolve this issue.

Login function inside the main screen (once app launches):

private void checkLogin(final String email, final String password) {
    // Tag used to cancel the request
    String tag_string_req = "req_login";

    pDialog.setMessage("Logging in ...");
    showDialog();

    StringRequest strReq = new StringRequest(Request.Method.POST,
            AppConfig.URL_LOGIN, new Response.Listener<String>() {

        @Override
        public void onResponse(String response) {

            Log.d(TAG, "Login Response: " + response.toString());
            hideDialog();


            try {
                JSONObject jObj = new JSONObject(response);
                boolean error = jObj.getBoolean("error");

                // Check for error node in json
                if (!error) {
                    // user successfully logged in
                    // Create login session
                    session.setLogin(true);
                    // Now store the user in SQLite
                    String uid = jObj.getString("uid");

                    JSONObject user = jObj.getJSONObject("user");
                    String name = user.getString("name");
                    String email = user.getString("email");
                    String created_at = user.getString("created_at");

                    // Inserting row in users table
                    db.addUser(name, email, uid, created_at);

                    // Launch main activity
                    Intent intent = new Intent(Main.this,
                            Logged.class);
                    startActivity(intent);
                    finish();
                } else {

                    error_msg.setVisibility(View.VISIBLE);
                    String msg = jObj.getString("error_msg");
                    error_msg.setText(msg);
                }
            } catch (JSONException e) {
                // JSON error
                e.printStackTrace();
                Toast.makeText(getApplicationContext(), "Json error: " + e.getMessage(), Toast.LENGTH_LONG).show();
            }

        }
    }, new Response.ErrorListener() {

        @Override
        public void onErrorResponse(VolleyError error) {
            Log.e(TAG, "Login Error: " + error.getMessage());
            Toast.makeText(getApplicationContext(),
                    error.getMessage(), Toast.LENGTH_LONG).show();
            hideDialog();
        }
    }) {

        @Override
        protected Map<String, String> getParams() {
            // Posting parameters to login url
            Map<String, String> params = new HashMap<String, String>();
            params.put("email", email);
            params.put("password", password);

            return params;
        }

    };

    // Adding request to request queue
    AppController.getInstance().addToRequestQueue(strReq, tag_string_req);
}

onViewCreated func inside fragment where users name should be diplayed:

@Override
public void onViewCreated(View view, Bundle savedInstanceState){

    profileName = (TextView) getActivity().findViewById(R.id.profileName);


    // SqLite database handler
    db = new SQLiteHandler(getActivity().getApplicationContext());

    // session manager
    session = new SessionManager(getActivity().getApplicationContext());

    if (!session.isLoggedIn()) {
        logoutUser();
    }

    // Fetching user details from SQLite
    HashMap<String, String> user = db.getUserDetails();

    String name = user.get("name");

    // Displaying the user details on the screen
    profileName.setText(name);

}

Register function part:

  public void onResponse(String response) {
            Log.d(TAG, "Register Response: " + response.toString());
            hideDialog();

            try {
                JSONObject jObj = new JSONObject(response);
                boolean error = jObj.getBoolean("error");
                if (!error) {

                    // User successfully stored in MySQL
                    // Now store the user in sqlite
                    String uid = jObj.getString("uid");

                    JSONObject user = jObj.getJSONObject("user");
                    String name = user.getString("name");
                    String email = user.getString("email");
                    String created_at = user.getString("created_at");

                    // Inserting row in users table
                    db.addUser(name, email, uid, created_at);

                    // Launch login activity
                    Intent intent = new Intent(
                            Register.this,
                            Main.class);
                    startActivity(intent);
                    finish();
                } else {

                    // Error occurred in registration. Get the error
                    // message
                    error_msg.setVisibility(View.VISIBLE);
                    String msg = jObj.getString("error_msg");
                    error_msg.setText(msg);


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

        }
    }, new Response.ErrorListener() {

        @Override
        public void onErrorResponse(VolleyError error) {
            Log.e(TAG, "Registration Error: " + error.getMessage());
            Toast.makeText(getApplicationContext(),
                    error.getMessage(), Toast.LENGTH_LONG).show();
            hideDialog();
        }
    }) {

Answer 1

I managed to sort this problem myself.. The problem was not in java files but in php files sending to java for some reason..

In php function I used:

$stmt->bind_result($id, $unique_id, $name, $email, $encrypted_password, $salt, $created_at, $updated_at);
$user = $stmt->fetch();

But then changed to

$user = $stmt->get_result()->fetch_assoc(); 

And that fixed the problem..