将String 换成 DATE TIME

Question

我尝试将String 换成 DATE TIME，可是日期为什么会变？

if (obj.due_date != null) {
      print('The date is  '+obj.due_date);
      print('now change to ' +
      DateUtil().formattedDate(DateTime.parse(obj.due_date)));
    }

DateUtil

import 'package:intl/intl.dart';

class DateUtil {
  static const DATE_FORMAT = 'dd/MM/yyyy';
  String formattedDate(DateTime dateTime) {
    print('dateTime ($dateTime)');
    return DateFormat(DATE_FORMAT).format(dateTime);
  }
}

Output

I/flutter ( 5209): The date is  2019-11-20T00:00:00.000+08:00
I/flutter ( 5209): dateTime (2019-11-19 16:00:00.000Z)
I/flutter ( 5209): now change to 19/11/2019
why it will change from 20 to 19?

Answer 1

已解决

 print('now change to ' +
          DateUtil().formattedDate(DateTime.parse(obj.due_date).toLocal()));