我有一个DateTime的实例,我想将其格式化为字符串。我怎么做呢?我想把日期转换成一个字符串,类似于“2013-04-20”。
当前回答
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);
}
其他回答
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);
}
有一个包date_format
dependencies:
date_format:
code
import 'package:date_format/date_format.dart';
final formattedStr = formatDate(
yourDateTime, [dd, '.', mm, '.', yy, ' ', HH, ':', nn]);
// output example "29.03.19 07:00"
注意:分钟是nn
链接到软件包
可以使用intl包格式化flutter中的日期。
void main() {
final DateTime now = DateTime.now();
final DateFormat format = DateFormat('yyyy-MM-dd');
final String formatted = format.format(now);
// 2021-03-02
}
或者可以使用date_format包来格式化flutter中的日期。
import 'package:date_format/date_format.dart';
final formattedStr = formatDate(DateTime.now(), [dd, '-', mm, '-', yyyy]);
//02-03-2021
这就给你提供了社交网络中的日期:[“今天”,“昨天”,“星期的哪一天”,等等。]
void main() {
DateTime now = new DateTime(2018,6,26);
print(date(now));
}
String date(DateTime tm) {
DateTime today = new DateTime.now();
Duration oneDay = new Duration(days: 1);
Duration twoDay = new Duration(days: 2);
Duration oneWeek = new Duration(days: 7);
String month;
switch (tm.month) {
case 1:
month = "january";
break;
case 2:
month = "february";
break;
case 3:
month = "march";
break;
case 4:
month = "april";
break;
case 5:
month = "may";
break;
case 6:
month = "june";
break;
case 7:
month = "july";
break;
case 8:
month = "august";
break;
case 9:
month = "september";
break;
case 10:
month = "october";
break;
case 11:
month = "november";
break;
case 12:
month = "december";
break;
}
Duration difference = today.difference(tm);
if (difference.compareTo(oneDay) < 1) {
return "today";
} else if (difference.compareTo(twoDay) < 1) {
return "yesterday";
} else if (difference.compareTo(oneWeek) < 1) {
switch (tm.weekday) {
case 1:
return "monday";
case 2:
return "tuesday";
case 3:
return "wednesday";
case 4:
return "thursday";
case 5:
return "friday";
case 6:
return "saturday";
case 7:
return "sunday";
}
} else if (tm.year == today.year) {
return '${tm.day} $month';
} else {
return '${tm.day} $month ${tm.year}';
}
}
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