updatePrefs function
Implementation
Future<void> updatePrefs(String key, dynamic value) async {
final prefs = await SharedPreferences.getInstance();
if (value is bool) {
await prefs.setBool(key, value);
} else if (value is String) {
await prefs.setString(key, value);
} else if (value is double) {
await prefs.setDouble(key, value);
} else if (value is int) {
await prefs.setInt(key, value);
} else if (value is List<String>) {
await prefs.setStringList(key, value);
}
}