import 'package:shared_preferences/shared_preferences.dart';

class SharedPreferencesUtils {
  static SharedPreferences? _prefs;

  // 初始化
  static Future<void> init() async {
    _prefs = await SharedPreferences.getInstance();
  }

  // 使用
  static Future<bool> setString(String key, String value) async {
    return _prefs?.setString(key, value) ?? Future.value(false);
  }

  static String? getString(String key) {
    return _prefs?.getString(key);
  }
}