Future<DateTime> showDatePicker({BuildContext context, DateTime initialDate, DateTime firstDate, DateTime lastDate })

Shows a dialog containing a material design date picker.

The returned Future resolves to the date selected by the user when the user closes the dialog. If the user cancels the dialog, null is returned.

See also:

Source 

Future<DateTime> showDatePicker({
  BuildContext context,
  DateTime initialDate,
  DateTime firstDate,
  DateTime lastDate
}) async {
  return await showDialog(
    context: context,
    child: new _DatePickerDialog(
      initialDate: initialDate,
      firstDate: firstDate,
      lastDate: lastDate
    )
  );
}