Alternatives to Dependency Injection in Android development?

        // Example: Service Locator Pattern
        class ServiceLocator {
            private static $services = [];

            public static function register($key, $service) {
                self::$services[$key] = $service;
            }

            public static function get($key) {
                return self::$services[$key] ?? null;
            }
        }

        // Registering services
        ServiceLocator::register('database', new DatabaseService());
        ServiceLocator::register('userService', new UserService(ServiceLocator::get('database')));

        // Using the service
        $userService = ServiceLocator::get('userService');
        $userService->createUser($userData);