Want to know what type of Date format is this : 2022-08-12T01:47:24.856316 , 2022-09-15T08:32:38.490Z
And how do i implement the current time to this format.
The format is known as ISO 8601, and you can parse and format it like this:
void main() {
print(DateTime.parse('2022-08-12T01:47:24.856316'));
print(DateTime.parse('2022-09-15T08:32:38.490Z'));
print(DateTime.now().toUtc().toIso8601String());
}
Output:
2022-08-12 01:47:24.856
2022-09-15 08:32:38.490Z
2023-01-28T07:28:29.865Z
Related
how to show datetime(timestamp format) form firebase firestore in (dd/mm/yy, hh:mm:ss) in flutter.
please see the images attachedfirebase firestore data
and my code is my code in vscode
You can simply call toDate() function to the dateTime or your firebase timestamp.
You can also convert them into desired format by using DateFormat class
Here is a small function which will return time like 12:37 AM :
import 'package:intl/intl.dart'; //add this import statement for using DateTime class
String getTime(var time) {
final DateFormat formatter = DateFormat('dd/MM/yyyy, hh:mm:ss aa'); //your date format here
var date = time.toDate();
return formatter.format(date);
}
This function will convert your timestamp object to provided format
eg.: July 23, 2021 at 9:22:29 PM UTC+5:30 -> 23/07/2021, 9:22:29 PM
You can refer this document for detailed date formatting.
You can first parse the date to get a DateTime object by using DateTime.parse(string_from_firebase).
Then use the DateFormat class from the intl package.
final DateTime dateToBeFormatted = DateTime.parse(string);
final df = DateFormat('dd/MM/yyyy');
final formatted = df.format(dateToBeFormatted);
I am getting date and time from store. In data base its look like this
Need to know how can I show this as DD/MM/YY
I am trying to do like this
String timeString = snapshot.data[index]['lastupdate'].toString();
DateTime date = DateTime.parse(timeString);
print(DateFormat('yyyy-MM-dd').format(date));
Its showing error of Invalid date format
Try like this your lastupdate date is not convertime inDate thats why its showing error
DateTime date = DateTime.parse(snapshot.data[index]['lastupdate'].toDate().toString());
print(DateFormat('dd-MMM-yyy').format(date));
Use function to get date from Timestamp like this:
readDate(Timestamp dateTime) {
DateTime date = DateTime.parse(dateTime.toDate().toString());
// add DateFormat What you want. Look at the below comment example
//String formatedDate = DateFormat('dd-MMM-yyy').format(date);
String formatedDate = DateFormat.yMMMMd().format(date);
return formatedDate;
}
Use the function when you want it.
For example:
Text(readDOB(streamSnapshot.data!["dob"]))
For this you should install intl package. read
So far I try new DateFormat("MM/dd/yy").parse('04/03/20') but it produce 04/03/0020 date.
You have to formate this date using formate method of datetime class. However, you need to convert string to datetime using parse method because datetime formate take datatime as an argument.
Following line help you to achieve desire output:
print(DateFormat("MM/dd/yy")
.format(DateFormat("MM/dd/yy").parse('04/03/20')));
UPDATE:
This following code will give result as you expected but it is hard to find out it is 1920 or 2020?
DateTime _dateTime = DateFormat("mm/dd/yy").parse('04/03/20');
_dateTime = DateTime(2000 + _dateTime.year, _dateTime.month, _dateTime.day);
print(_dateTime);
I need to parse a date in the following format in my Flutter application (come from JSON) :
2019-05-17T15:03:22.472+0000
According to the documentation, I have to use Z to get the time zone (last 5 characters in RFC 822 format), so I use the following :
new DateFormat("y-M-d'T'H:m:s.SZ").parseStrict(json['startDate']);
But it fails with error :
FormatException: Characters remaining after date parsing in
2019-05-17T15:03:22.472+0000
Here is another test :
/// THIS WORKS
try {
print(new DateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS").format(DateTime.now()));
} catch (e) {
print(e.toString());
}
/// THIS RETURNS `UnimplementedError` (as soon as I use a 'Z' or 'z') somewhere
try {
print(new DateFormat("yyyy-MM-dd'T'HH:mm:ss.SSSZ").format(DateTime.now()));
} catch (e) {
print(e.toString());
}
Is Z implemented ?
Sadly z and v patterns are not implemented.
Those won't be implemented until Dart DateTime's have time zone information
More info on this issue https://github.com/dart-lang/intl/issues/19
From the DateFormat class docs:
DateFormat is for formatting and parsing dates in a locale-sensitive manner.
You're not asking to parse a locale-sensitive date string but rather an ISO 8601 date string, so thus you should not use the DateFormat class.
Instead, use the DateTime.parse method, which supports the format you described, per its docs:
Examples of accepted strings:
...
"2002-02-27T14:00:00-0500": Same as "2002-02-27T19:00:00Z"
You can use this format
print(new DateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'").format(DateTime.now()));
It worked for me.
I have a component that uses a datepicker. The datepicker needs a dateFormat property that fits the momentjs pattern, for example 'DD.MM.YYYY' or 'MM/DD/YYYY'.
The date formatting is handled by react-intl. This works fine when converting from a date to a string (via formatDate). However, I need to retrieve the pattern as described above.
My goal is to do something like
dateFormat = this.props.intl.extractDateFormat() // returns 'DD.MM.YYYY'
I have found this similar question, but the only answer relies on parsing the string, which I cannot do, because I do not know whether Day or Month will come first in the formatted date.
If it is possible to convert this string to a date and somehow retrieve the format from momentjs, that would also be a good solution.
I was able to get the date format from react-intl. To do this, I defined an example date and had it formatted by react-intl, and then parsed the format by referring to the original string.
My component which is exported as injectIntl(Component) has this method:
deriveDateFormat = () => {
const isoString = '2018-09-25' // example date!
const intlString = this.formatDate(isoString) // generate a formatted date
const dateParts = isoString.split('-') // prepare to replace with pattern parts
return intlString
.replace(dateParts[2], 'DD')
.replace(dateParts[1], 'MM')
.replace(dateParts[0], 'YYYY')
}
The date will e.g. be formatted to '09/25/2018', and this function would return 'MM/DD/YYYY', a format which can be used by Moment.js.
This function only works if you know that the month and day will always be displayed with two digits. It would fail if the format is something like 9/25/2018.
I have not found a way to extract the date format from react-intl directly.