@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        logoutButton = findViewById(R.id.logoutButton);

        logoutButton.setOnClickListener(v -> {
            if (logoutButton.getText().toString().equals("Login")) {
                startActivity(new Intent(MainActivity.this, LoginActivity.class));
            } else {
                logout();
                startActivity(new Intent(MainActivity.this, LoginActivity.class));

            }

        });
    }

    private void logout() {
        SharedPreferences preferences = getSharedPreferences(SHARED, Context.MODE_PRIVATE);
        SharedPreferences.Editor editor = preferences.edit();
        editor.clear();
        editor.apply();
        Toast.makeText(this, R.string.logoutToast, Toast.LENGTH_SHORT).show();
    }