I have some code from my android studio project, i am using the latest xampp with mysql and apache, i have php code to speak to query the database.
problem:
i am trying verify the username and password, yet the code is echoing back wrong username or password, so far i worked out the username and password is definitely getting passed, the php code is connected to the database and has access to the table as i have put in table names that arent there and it tells me so.

the table is called login,
it has one entry
username = a
password = a

can anyone point me to where the problem might be laying.

android code

   protected void login(){

    getPassword = findViewById(R.id.passwordInput);
    getUsername = findViewById(R.id.usernameInput);
    String username = String.valueOf(getUsername.getText()).trim();
    String password = String.valueOf(getPassword.getText()).trim();

    //Start ProgressBar first (Set visibility VISIBLE)
    Handler handler = new Handler(Looper.getMainLooper());
    handler.post(new Runnable() {
        @Override
        public void run() {

            //Starting Write and Read data with URL
            //Creating array for parameters
            String[] field = new String[2];
            field[0] = "username";
            field[1] = "password";
            //Creating array for data
            String[] data = new String[2];
            data[0] = username;
            data[1] = password;

            System.out.println(Arrays.asList(data));
            PutData putData = new PutData("http://**MY_IP**/storemanager/login.php", "POST", field, data);

            System.out.println(username + "" + password);
            System.out.println(putData.getResult());
            if (putData.startPut()) {
System.out.println("starting");
                if (putData.onComplete()) {
System.out.println("complete");
                    String result = putData.getResult();
                    //End ProgressBar (Set visibility to GONE)
                    Log.i("PutData", result);
                    System.out.println(Arrays.asList(data));
                    System.out.println(Arrays.asList(field));
                    if(result.matches("Login Success")){

                        System.out.println("yupp");
                    }
                }
            }
            //End Write and Read data with URL
        }
    });

login.php

 <?php
   require "DataBase.php";
   $db = new DataBase();
   if (isset($_POST['username']) && isset($_POST['password'])) {
if ($db->dbConnect()) {
    if ($db->logIn("login", $_POST['username'], $_POST['password'])) {
        echo "Login Success";
    } else echo "Username or Password wrong";
} else echo "Error: Database connection";
 } else echo "All fields are required";
?>

database.php

   <?php
       require "DataBaseConfig.php";

 class DataBase
 {
public $connect;
public $data;
private $sql;
protected $servername;
protected $username;
protected $password;
protected $databasename;

public function __construct()
{
    $this->connect = null;
    $this->data = null;
    $this->sql = null;
    $dbc = new DataBaseConfig();
    $this->servername = $dbc->servername;
    $this->username = $dbc->username;
    $this->password = $dbc->password;
    $this->databasename = $dbc->databasename;
}

function dbConnect()
{
    $this->connect = mysqli_connect($this->servername, $this->username, $this->password, $this->databasename);
    return $this->connect;
}

function prepareData($data)
{
    return mysqli_real_escape_string($this->connect, stripslashes(htmlspecialchars($data)));
}

function logIn($table, $username, $password)
{
    $username = $this->prepareData($username);
    $password = $this->prepareData($password);
    $this->sql = "select * from " . $table . " where username = '" . $username . "'";
    $result = mysqli_query($this->connect, $this->sql);
    $row = mysqli_fetch_assoc($result);
    if (mysqli_num_rows($result) != 0) {
        $dbusername = $row['username'];
        $dbpassword = $row['password'];
        if ($dbusername == $username && password_verify($password, $dbpassword)) {
            $login = true;
        } else $login = false;
    } else $login = false;

    return $login;
}

function signUp($table, $fullname, $email, $username, $password)
{
    $fullname = $this->prepareData($fullname);
    $username = $this->prepareData($username);
    $password = $this->prepareData($password);
    $email = $this->prepareData($email);
    $password = password_hash($password, PASSWORD_DEFAULT);
    $this->sql =
        "INSERT INTO " . $table . " (fullname, username, password, email) VALUES ('" . $fullname . "','" . $username . "','" . $password . "','" . $email . "')";
    if (mysqli_query($this->connect, $this->sql)) {
        return true;
    } else return false;
}

}

?>

databaseconfig.php

  <?php

    class DataBaseConfig
    {
    public $servername;
    public $username;
    public $password;
    public $databasename;

public function __construct()
{

    $this->servername = 'localhost';
    $this->username = 'root';
    $this->password = '';
    $this->databasename = 'storemanager';

    }
  }

  ?>