您还可以像前面所述的那样指定日期格式:https://pub.dev/documentation/intl/latest/intl/DateFormat-class.html

import 'package:intl/intl.dart';
String formatDate(DateTime date) => new DateFormat("MMMM d").format(date);

出品时间:3月4日

您还可以像前面所述的那样指定日期格式:https://pub.dev/documentation/intl/latest/intl/DateFormat-class.html

import 'package:intl/intl.dart';
String formatDate(DateTime date) => new DateFormat("MMMM d").format(date);

出品时间:3月4日

pubspec.yaml:

dependencies:
  intl:

main.dart:

import 'package:intl/intl.dart'; // for date format
import 'package:intl/date_symbol_data_local.dart'; // for other locales

void main() {
  var now = DateTime.now();
  print(DateFormat().format(now)); // This will return date using the default locale
  print(DateFormat('yyyy-MM-dd hh:mm:ss').format(now));
  print(DateFormat.yMMMMd().format(now)); // print long date 
  print(DateFormat.yMd().format(now)); // print short date 
  print(DateFormat.jms().format(now)); // print time 

  initializeDateFormatting('es'); // This will initialize Spanish locale
  print(DateFormat.yMMMMd('es').format(now)); // print long date in Spanish format
  print(DateFormat.yMd('es').format(now)); // print short date in Spanish format
  print(DateFormat.jms('es').format(now)); // print time in Spanish format
}

结果:

May 31, 2020 5:41:42 PM
2020-05-31 05:41:42
May 31, 2020
5/31/2020
5:41:42 PM
31 de mayo de 2020
31/5/2020
17:41:42

String formatDate(String date) {
    return date.substring(0, 10).split('-').reversed.join().replaceAll('-', '/');
    
  }

From format "yyyy-mm-dd H:i:s"

一个更简单的方法:

new DateFormat("dd-MM-y").format(YOUR_DATETIME_HERE)

您可以使用intl包(安装程序)格式化日期。

对于en_US格式，它非常简单:

import 'package:intl/intl.dart';

main() {
  final DateTime now = DateTime.now();
  final DateFormat formatter = DateFormat('yyyy-MM-dd');
  final String formatted = formatter.format(now);
  print(formatted); // something like 2013-04-20
}

有许多格式化选项。从文档中可以看出:

ICU Name                   Skeleton
--------                   --------
DAY                          d
ABBR_WEEKDAY                 E
WEEKDAY                      EEEE
ABBR_STANDALONE_MONTH        LLL
STANDALONE_MONTH             LLLL
NUM_MONTH                    M
NUM_MONTH_DAY                Md
NUM_MONTH_WEEKDAY_DAY        MEd
ABBR_MONTH                   MMM
ABBR_MONTH_DAY               MMMd
ABBR_MONTH_WEEKDAY_DAY       MMMEd
MONTH                        MMMM
MONTH_DAY                    MMMMd
MONTH_WEEKDAY_DAY            MMMMEEEEd
ABBR_QUARTER                 QQQ
QUARTER                      QQQQ
YEAR                         y
YEAR_NUM_MONTH               yM
YEAR_NUM_MONTH_DAY           yMd
YEAR_NUM_MONTH_WEEKDAY_DAY   yMEd
YEAR_ABBR_MONTH              yMMM
YEAR_ABBR_MONTH_DAY          yMMMd
YEAR_ABBR_MONTH_WEEKDAY_DAY  yMMMEd
YEAR_MONTH                   yMMMM
YEAR_MONTH_DAY               yMMMMd
YEAR_MONTH_WEEKDAY_DAY       yMMMMEEEEd
YEAR_ABBR_QUARTER            yQQQ
YEAR_QUARTER                 yQQQQ
HOUR24                       H
HOUR24_MINUTE                Hm
HOUR24_MINUTE_SECOND         Hms
HOUR                         j
HOUR_MINUTE                  jm
HOUR_MINUTE_SECOND           jms
HOUR_MINUTE_GENERIC_TZ       jmv
HOUR_MINUTE_TZ               jmz
HOUR_GENERIC_TZ              jv
HOUR_TZ                      jz
MINUTE                       m
MINUTE_SECOND                ms
SECOND                       s

对于非en_us日期，需要显式地加载语言环境。更多信息请参阅DateFormat文档。date_symbol_data_local。Dart包含每个国家/语言的所有格式，如果您想更深入地了解的话。