getItems method

Future<List<T>> getItems()

Implementation

Future<List<T>> getItems() async {
  final prefs = await SharedPreferences.getInstance();
  final String? existingData = prefs.getString(key);
  if (existingData == null) return [];
  final List<dynamic> jsonList = jsonDecode(existingData);
  return jsonList.map((jsonItem) => fromJson(jsonItem)).toList();
}