53 lines
1.4 KiB
Dart
53 lines
1.4 KiB
Dart
import 'package:shared_preferences/shared_preferences.dart';
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class StorageService {
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StorageService._internal();
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static final StorageService instance = StorageService._internal();
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late final SharedPreferences _prefs;
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/// 启动时调用一次，确保 prefs 已就绪
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Future<void> init() async {
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_prefs = await SharedPreferences.getInstance();
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}
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/// 存储 String
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Future<bool> setString(String key, String value) =>
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_prefs.setString(key, value);
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/// 读取 String
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String? getString(String key) => _prefs.getString(key);
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/// 存储 String 列表
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Future<bool> setStringList(String key, List<String> value) =>
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_prefs.setStringList(key, value);
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/// 读取 String 列表
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List<String>? getStringList(String key) => _prefs.getStringList(key);
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/// 存储 int
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Future<bool> setInt(String key, int value) => _prefs.setInt(key, value);
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/// 读取 int
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int? getInt(String key) => _prefs.getInt(key);
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/// 存储 bool
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Future<bool> setBool(String key, bool value) => _prefs.setBool(key, value);
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/// 读取 bool
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bool? getBool(String key) => _prefs.getBool(key);
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/// 存储 double
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Future<bool> setDouble(String key, double value) =>
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_prefs.setDouble(key, value);
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/// 读取 double
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double? getDouble(String key) => _prefs.getDouble(key);
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/// 删除单个 key
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Future<bool> remove(String key) => _prefs.remove(key);
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/// 清空所有
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Future<bool> clear() => _prefs.clear();
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}
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