/// Get date as a string for display.
String getFormattedDate(String date) {
  /// Convert into local date format.
  var localDate = DateTime.parse(date).toLocal();

  /// inputFormat - format getting from api or other func.
  /// e.g If 2021-05-27 9:34:12.781341 then format must be yyyy-MM-dd HH:mm
  /// If 27/05/2021 9:34:12.781341 then format must be dd/MM/yyyy HH:mm
  var inputFormat = DateFormat('yyyy-MM-dd HH:mm');
  var inputDate = inputFormat.parse(localDate.toString());

  /// outputFormat - convert into format you want to show.
  var outputFormat = DateFormat('dd/MM/yyyy HH:mm');
  var outputDate = outputFormat.format(inputDate);

  return outputDate.toString();
} 

设置你的项目intl包

dateTimeFormet (date){
   //MM-dd-yyyy
   //yyyy-MM-dd 
   return DateFormat('dd-MM-yyyy').format(date);// you can set your formet
}

void main (){
  var date = 01-11-2022 00 : 00
  var _datetime = dateTimeFormet(date);
  print(_dateTime);
}

 String dateConverter(String date) {
    // Input date Format
    final format = DateFormat("dd-MM-yyyy");
    DateTime gettingDate = format.parse(date);
    final DateFormat formatter = DateFormat('yyyy-MM-dd');
    // Output Date Format
    final String formatted = formatter.format(gettingDate);
    return date;
  }

用“H:mm”来查看完整的分钟，比如13:08，而不是13:8

如果有人想将字符串格式的日期转换为其他字符串格式，首先使用DateTime.parse("2019-09-30")，然后将其传递给DateFormat("date pattern").format()

dateFormate = DateFormat("dd-MM-yyyy").format(DateTime.parse("2019-09-30"));

参考:Dart -如何将简单的日期字符串格式从yyyy-MM-dd更改为dd-MM-yyyy

要获得一个用户友好的字符串，包括日期和时间，你可以使用这个:

import 'package:intl/intl.dart';

main() {
  final DateTime someDateTime = DateTime(2017, 9, 7, 17, 30);
  final DateFormat formatter = DateFormat.yMMMd().add_jms();
  final String formatted = formatter.format(someDateTime);
  print(formatted); // Sep 7, 2017 5:30:00 PM (in the US)
}