write method
Implementation
Future<void> write(String key, dynamic value) async {
if (value is String) {
await _prefs.setString(key, value);
} else if (value is int) {
await _prefs.setInt(key, value);
} else if (value is double) {
await _prefs.setDouble(key, value);
} else if (value is bool) {
await _prefs.setBool(key, value);
} else if (value is List<String>) {
await _prefs.setStringList(key, value);
} else if (value is Map || value is List) {
// Serialize Map or List to JSON String
await _prefs.setString(key, jsonEncode(value));
} else {
throw Exception('Unsupported value type');
}
}