uuid method
Implementation
Future<String> uuid() async {
String id = 'unknown';
if (Platform.isAndroid) {
final AndroidDeviceInfo androidInfo = await _deviceInfo.androidInfo;
id = androidInfo.id;
} else if (Platform.isIOS) {
final IosDeviceInfo iosInfo = await _deviceInfo.iosInfo;
id = iosInfo.identifierForVendor ?? '';
}
return id;
}