Flutter DatePicker with lenguage support

flutter_datepicker.dart

Future<String> getDateByUser(BuildContext context) async {
  /*Support lenguage
  How to: https://stackoverflow.com/questions/61529343/how-to-change-language-of-show-date-picker-in-flutter
  https://flutter.dev/docs/development/accessibility-and-localization/internationalization
  */

  DateTime selectedDate = DateTime.now();

  final DateTime picked = await showDatePicker(
      context: context,
      initialDate: selectedDate,
      locale: const Locale("es", ""),
      firstDate: DateTime(2020, 1),
      lastDate: DateTime(2101));

  if (picked != null && picked != selectedDate) {
    String dateReadable =
        picked.toString().substring(0, 10).replaceAll('-', '/');

    return dateReadable;
  } else
    return null;
}