Convert to datetime format with hours, minutes and seconds separate - flutter

I have this format of date time 2021-10-04 05:00:00.000Z.
I want in date , hh, mm, ss separately.
How to do this?


DateTime date=DateTime.parse("2021-10-04 05:00:00.000Z");
var mm=date.month;
var yy=date.year;
var hh=date.hour;
if you want format, use intl packeges
pub.dev
DateFormat df = new DateFormat('yyyy-MM-dd HH:mm:ss');
df.format(DateTime.now())


Try this
void main() {
var dt = DateTime.parse('2021-10-04 05:00:00.000Z');
print(dt.year);
print(dt.month);
print(dt.hour);
print(dt.minute);
print(dt.second);
}
If you need another type of manipulations use intl package


You can use DateFormat to format the DateTime.
import 'package:intl/intl.dart';
void main() {
DateTime dt = DateTime.parse('2021-10-04 05:00:00.000Z');
String date = DateFormat('yyyy-MM-dd').format(dt);
print(date);
String time = DateFormat('hh:mm:ss').format(dt);
print(time);
}


Try below code hope its helpful to you. refer intl package here
DateTime dateTime = DateTime.parse("2021-10-04 05:00:00.000Z");
String yourDateTime = DateFormat('yyyy-MM-dd hh:mm:ss').format(dateTime);
If you want dd-MM-yyyy format try below code
String yourDateTime = DateFormat('dd-MM-yyyy hh:mm:ss').format(dateTime);
Your Widget:
Text(
yourDateTime,
),
Your result Screen->

Related

How to get difference between 1 Timestamp and 1 dateTime in minute or day

using DateTime we can use the following to get the difference
DateTime myFirstDateTime = DateTime.now();
DateTime mySecondtDateTime = DateTime.now();
myFirstDateTime.difference(mySecondtDateTime).inMinutes // or inDay
the previous code is working as expected but how can I handle the same between Timestamp and DateTime ?
I used the following but it give wrong result and strange negative numbers like -5623
Timestamp myTimestamp = // here I get the value from my Firebase field
DateTime myDateTime = DateTime.now();
then I convert it `toDate()`
myDateTime.difference(myTimestamp.toDate()).inMinutes; //or inDay
//output strange value
How can I do it? Thanks

You might have to move the brackets as follows:
myDateTime.difference(myTimestamp.toDate()).inMinutes;

Try this one out
var myTimestamp = // here you get the value from your Firebase field
DateTime myDateTime = DateTime.now();
DateTime myFirebaseTime = DateTime.parse(myTimestamp.toDate().toString());
myDateTime.difference(myFirebaseTime).inDays;

flutter) how can I convert String to Time? [duplicate]

This question already has answers here:
How do I convert a date/time string to a DateTime object in Dart?
(8 answers)
unable to convert string date in Format yyyyMMddHHmmss to DateTime dart
(11 answers)
Closed last year.
Hi i have an array contains
List<dynamic> am = ['09:00', '09:30', '10:00', '10:30', '11:00', '11:30'];
and if they are selected
String time = '09:00'
how can I change time to the DateTime value or TimeOfDay

import 'package:intl/intl.dart';
if your time format is fixed (for example "hours:minutes" ) you can use this method
DateTime? _convertStringToDateTime(String time){
DateTime? _dateTime;
try{
_dateTime = DateFormat("hh:mm").parse(time);
}catch(e){}
return _dateTime;
}

You can use this:
TimeOfDay toTimeOfDay(String time){
List<String> timeSplit = time.split(":");
int hour = int.parse(timeSplit.first);
int minute = int.parse(timeSplit.last);
return TimeOfDay(hour: hour, minute: minute);
}

https://pub.dev/packages/date_format
See this package, By means of this package you can format your DateTime.

How can we identify time section in datetime flutter

I will receive DateTime in UTC format from API and I need to convert the DateTime to local time zone based on the condition.
We have toLocal() method to change the time based on the device time zone.
condition: 23-4-2021 // no need to change it to toLocal()
23-4-2021 00:00:00 // no need to change it to toLocal()
23-4-2021 10:30:34 // need to change it to toLocal()
If we have time in the DateTime then only we have to change it in local time.
DateTime utcToDateTimeLocal(DateTime value) {
return value.toLocal();
}
Thanks!

Something like this maybe ?
DateTime utcToDateTimeLocal(DateTime value) {
if (value.hour!=0 || value.minute!=0 || value.second!=0){
return value.toLocal();
}
return value;
}

Here is quick solution that work for me.
You can get time (or any format) by DateFormat class
In your case
dateTime = '23-4-2021 10:30:34'
final format = DateFormat('HH:mm a');
final clockString = format.format(dateTime);
you will get // 10:30 AM

DateTime utcToDateTimeLocal(DateTime value) {
var dateFormat =
DateFormat("dd-mm-yyyy hh:mm a"); // you can change the format here
var utcDate =
dateFormat.format(DateTime.parse(value.toString())); // pass the UTC time here
var localDate = dateFormat.parse(utcDate, true).toLocal().toString();
return DateTime.parse(localDate);
}

Getting just the year, month, and date in flutter? [duplicate]

All I can see in the documentation is DateTime.now() but it returns the Timespan also, and I need just the date.

Create a new date from now with only the parts you need:
DateTime now = new DateTime.now();
DateTime date = new DateTime(now.year, now.month, now.day);
Hint: "new" is optional in Dart since quite a while

If you want only the date without the timestamp. You can take the help of intl package.
main() {
var now = new DateTime.now();
var formatter = new DateFormat('yyyy-MM-dd');
String formattedDate = formatter.format(now);
print(formattedDate); // 2016-01-25
}
This requires the intl package:
dependencies:
intl: ^0.16.1
And finally import:
import 'package:intl/intl.dart';

You can get the current date using the DateTime class and format the Date using the DateFormat. The DateFormat class requires you to import the intl package so
add to pubspec.yaml
dependencies:
intl: ^0.17.0
and import
import 'package:intl/intl.dart';
and then format using
final now = new DateTime.now();
String formatter = DateFormat('yMd').format(now);// 28/03/2020
In case you are wondering How do you remember the date format(DateFormat('yMd'))? Then Flutter Docs is the answer
The DateFormat class allows the user to choose from a set of standard date time formats as well as specify a customized pattern under certain locales.
The below formats are taken directly from the docs
/// Examples Using the US Locale:
/// Pattern Result
/// ---------------- -------
new DateFormat.yMd() -> 7/10/1996
new DateFormat('yMd') -> 7/10/1996
new DateFormat.yMMMMd('en_US') -> July 10, 1996
new DateFormat.jm() -> 5:08 PM
new DateFormat.yMd().add_jm() -> 7/10/1996 5:08 PM
new DateFormat.Hm() -> 17:08 // force 24 hour time
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
Hope this helps you to get Date in any format.

this without using any package (it will convert to string)
DateTime dateToday =new DateTime.now();
String date = dateToday.toString().substring(0,10);
print(date); // 2021-06-24

With dart extension
extension MyDateExtension on DateTime {
DateTime getDateOnly(){
return DateTime(this.year, this.month, this.day);
}
}
Usage:
DateTime now = DateTime.now(); // 30/09/2021 15:54:30
DateTime dateOnly = now.getDateOnly(); // 30/09/2021

use this
import 'package:intl/intl.dart';
getCurrentDate() {
return DateFormat('yyyy-MM-dd – kk:mm').format(DateTime.now());
}

If you just need to print the year from a Timespan you can simply do:
DateTime nowDate = DateTime.now();
int currYear = nowDate.year;
print(currYear.toString());

There's no class in the core libraries to model a date w/o time. You have to use new DateTime.now().
Be aware that the date depends on the timezone: 2016-01-20 02:00:00 in Paris is the same instant as 2016-01-19 17:00:00 in Seattle but the day is not the same.

If you prefer a more concise and single line format, based on Günter Zöchbauer's answer, you can also write:
DateTime dateToday = DateTime(DateTime.now().year, DateTime.now().month, DateTime.now().day) ;
Though, it'll make 3 calls to DateTime.now(), the extra variable won't be required, especially if using with Dart ternary operator or inside Flutter UI code block.

In case someone need the simplest way to format date/time in flutter, no plugin needed:
var MONTHS = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"];
String formattedDateTime() {
DateTime now = new DateTime.now();
return now.day.toString()+" "+MONTHS[now.month-1]+" "+now.year.toString()+" "+now.hour.toString()+":"+now.minute.toString()+":"+now.second.toString();
}
example result: 1 Jan 2020 07:30:45
Change:
MONTHS array to show the month in any language
the return string as needed: to show date only, time only, or date in
different format (dd/mm/yyyy, dd-mm-yyyy, mm/dd/yyyy, etc.)

If you want device's current date just use this
DateTime internetTime = DateTime.now();
DateTime date = new DateTime(now.year, now.month, now.day);
Or if u want internet time, then use below plugin
ntp: ^2.0.0
import 'package:ntp/ntp.dart';
final int offset = await NTP.getNtpOffset(
localTime: DateTime.now(), lookUpAddress: "time.google.com");
DateTime internetTime = DateTime.now().add(Duration(milliseconds: offset));
DateTime internetTime = new DateTime(now.year, now.month, now.day);
Or if you need internet time but you don't want to use plugin then use api call
"http://worldtimeapi.org/api/timezone/Asia/Kolkata"
{
"abbreviation": "IST",
"client_ip": "136.232.222.86",
"datetime": "2022-09-30T17:13:10.299478+05:30",
"day_of_week": 5,
"day_of_year": 273,
"dst": false,
"dst_from": null,
"dst_offset": 0,
"dst_until": null,
"raw_offset": 19800,
"timezone": "Asia/Kolkata",
"unixtime": 1664538190,
"utc_datetime": "2022-09-30T11:43:10.299478+00:00",
"utc_offset": "+05:30",
"week_number": 39
}

first go to pub.dev and get the intl package and add it to your project.
DateFormat.yMMMMd().format(the date you want to render . but must have the type DateTime)

You can use the day in DateTime.now()

How can I get the current date (w/o hour and minutes)?

All I can see in the documentation is DateTime.now() but it returns the Timespan also, and I need just the date.

Create a new date from now with only the parts you need:
DateTime now = new DateTime.now();
DateTime date = new DateTime(now.year, now.month, now.day);
Hint: "new" is optional in Dart since quite a while

If you want only the date without the timestamp. You can take the help of intl package.
main() {
var now = new DateTime.now();
var formatter = new DateFormat('yyyy-MM-dd');
String formattedDate = formatter.format(now);
print(formattedDate); // 2016-01-25
}
This requires the intl package:
dependencies:
intl: ^0.16.1
And finally import:
import 'package:intl/intl.dart';

You can get the current date using the DateTime class and format the Date using the DateFormat. The DateFormat class requires you to import the intl package so
add to pubspec.yaml
dependencies:
intl: ^0.17.0
and import
import 'package:intl/intl.dart';
and then format using
final now = new DateTime.now();
String formatter = DateFormat('yMd').format(now);// 28/03/2020
In case you are wondering How do you remember the date format(DateFormat('yMd'))? Then Flutter Docs is the answer
The DateFormat class allows the user to choose from a set of standard date time formats as well as specify a customized pattern under certain locales.
The below formats are taken directly from the docs
/// Examples Using the US Locale:
/// Pattern Result
/// ---------------- -------
new DateFormat.yMd() -> 7/10/1996
new DateFormat('yMd') -> 7/10/1996
new DateFormat.yMMMMd('en_US') -> July 10, 1996
new DateFormat.jm() -> 5:08 PM
new DateFormat.yMd().add_jm() -> 7/10/1996 5:08 PM
new DateFormat.Hm() -> 17:08 // force 24 hour time
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
Hope this helps you to get Date in any format.

this without using any package (it will convert to string)
DateTime dateToday =new DateTime.now();
String date = dateToday.toString().substring(0,10);
print(date); // 2021-06-24

With dart extension
extension MyDateExtension on DateTime {
DateTime getDateOnly(){
return DateTime(this.year, this.month, this.day);
}
}
Usage:
DateTime now = DateTime.now(); // 30/09/2021 15:54:30
DateTime dateOnly = now.getDateOnly(); // 30/09/2021

use this
import 'package:intl/intl.dart';
getCurrentDate() {
return DateFormat('yyyy-MM-dd – kk:mm').format(DateTime.now());
}

If you just need to print the year from a Timespan you can simply do:
DateTime nowDate = DateTime.now();
int currYear = nowDate.year;
print(currYear.toString());

There's no class in the core libraries to model a date w/o time. You have to use new DateTime.now().
Be aware that the date depends on the timezone: 2016-01-20 02:00:00 in Paris is the same instant as 2016-01-19 17:00:00 in Seattle but the day is not the same.

If you prefer a more concise and single line format, based on Günter Zöchbauer's answer, you can also write:
DateTime dateToday = DateTime(DateTime.now().year, DateTime.now().month, DateTime.now().day) ;
Though, it'll make 3 calls to DateTime.now(), the extra variable won't be required, especially if using with Dart ternary operator or inside Flutter UI code block.

In case someone need the simplest way to format date/time in flutter, no plugin needed:
var MONTHS = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"];
String formattedDateTime() {
DateTime now = new DateTime.now();
return now.day.toString()+" "+MONTHS[now.month-1]+" "+now.year.toString()+" "+now.hour.toString()+":"+now.minute.toString()+":"+now.second.toString();
}
example result: 1 Jan 2020 07:30:45
Change:
MONTHS array to show the month in any language
the return string as needed: to show date only, time only, or date in
different format (dd/mm/yyyy, dd-mm-yyyy, mm/dd/yyyy, etc.)

If you want device's current date just use this
DateTime internetTime = DateTime.now();
DateTime date = new DateTime(now.year, now.month, now.day);
Or if u want internet time, then use below plugin
ntp: ^2.0.0
import 'package:ntp/ntp.dart';
final int offset = await NTP.getNtpOffset(
localTime: DateTime.now(), lookUpAddress: "time.google.com");
DateTime internetTime = DateTime.now().add(Duration(milliseconds: offset));
DateTime internetTime = new DateTime(now.year, now.month, now.day);
Or if you need internet time but you don't want to use plugin then use api call
"http://worldtimeapi.org/api/timezone/Asia/Kolkata"
{
"abbreviation": "IST",
"client_ip": "136.232.222.86",
"datetime": "2022-09-30T17:13:10.299478+05:30",
"day_of_week": 5,
"day_of_year": 273,
"dst": false,
"dst_from": null,
"dst_offset": 0,
"dst_until": null,
"raw_offset": 19800,
"timezone": "Asia/Kolkata",
"unixtime": 1664538190,
"utc_datetime": "2022-09-30T11:43:10.299478+00:00",
"utc_offset": "+05:30",
"week_number": 39
}

first go to pub.dev and get the intl package and add it to your project.
DateFormat.yMMMMd().format(the date you want to render . but must have the type DateTime)

You can use the day in DateTime.now()