How to convert "MM/DD/YYYY" to TZDateTime format

Question

I am implementing flutter local notification plugin in my todo app and I want to schedule the notification for a specific day and time, The date picker and time picker shows the date like this: 12/26/2021 and the time like this: 03:17 PM, How do I convert this to TZDateTime format

See [How do I convert a date/time string to a DateTime object in Dart?](https://stackoverflow.com/q/49385303/) for how to parse a `String` to a `DateTime` object. From there ,use [`TZDateTime.from`](https://pub.dev/documentation/timezone/latest/timezone.standalone/TZDateTime/TZDateTime.from.html) to convert a `DateTime` to a `TZDateTime`. — jamesdlin, Dec 26 '21 at 10:16
While converting from dateTime to TZDateTime it asks for location, what should I specify as location. — Rohith Nambiar, Dec 27 '21 at 04:41
I can't answer that for you.You're the one who wants to use a `TZDateTime` object, which means that you want a version of `DateTime` that uses a specific time zone that isn't UTC and that isn't the local time. You haven't indicated what time zone you want. If you care only about local or UTC times, then you can just use a normal `DateTime` object (or, if you really need a `TZDateTime` object, use the `TZDateTime.utc` or `TZDateTime.local` constructors). — jamesdlin, Dec 27 '21 at 04:56

Masum Billah Sanjid · Answer 1 · 2021-12-27T05:36:38.487

3

import timezone

import 'package:timezone/data/latest_all.dart' as tz;
import 'package:timezone/timezone.dart' as tz;


tz.initializeTimeZones();
tz.TZDateTime.parse(tz.local, "2012-12-26 03:17:00");
//tz.UTC

Or

tz.TZDateTime.from(DateTime(2021,12,26,03,07), tz.local);
//tz.UTC

edited Dec 27 '21 at 05:36

answered Dec 26 '21 at 10:13

Masum Billah Sanjid

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How do I convert 3:40 PM to 03:17:00 format – Rohith Nambiar Dec 27 '21 at 10:11
what is the type of 3:40PM string or datetime? – Masum Billah Sanjid Dec 27 '21 at 10:17
Both the Date and time are String – Rohith Nambiar Dec 27 '21 at 10:26
1

Check this code [link](https://pastebin.com/qEQ4VBdS) – Masum Billah Sanjid Dec 27 '21 at 10:55

Jahidul Islam · Accepted Answer · 2021-12-27T10:32:30.980

0

Try out the below code

 TZDateTime tzDateTime;
    String dateTime = getFormattedDateFromFormattedString(
        value: "12/26/2021 3:16 PM",
        currentFormat: "MM/dd/yyyy hh:mm a",
        desiredFormat: "yyyy-MM-dd HH:mm:ss");

    tz.initializeTimeZones();
    tzDateTime = tz.TZDateTime.parse(tz.local, dateTime);

    print(tzDateTime);
}

// format your given time
  getFormattedDateFromFormattedString(
      {value, String currentFormat, String desiredFormat, isUtc = true}) {
    DateTime dateTime = DateTime.now();
    if (value != null || value.isNotEmpty) {
      try {
        dateTime = DateFormat(currentFormat).parse(value, isUtc).toLocal();
      } catch (e) {
        print("$e");
      }
    }
    return dateTime.toString();
  }

edited Dec 27 '21 at 10:32

answered Dec 26 '21 at 10:01

Jahidul Islam

11,435
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I get the error: _TypeError (type 'Null' is not a subtype of type 'TZDateTime') – Rohith Nambiar Dec 26 '21 at 11:42
I think you miss something, please check out [dartpad](https://dartpad.dartlang.org/?id=a2dc80fdac4b7fd5b098b48dbd7afbf9) – Jahidul Islam Dec 26 '21 at 11:46
This returns a string but it should be in TZDateTime, So I tried TZDateTime.parse method, it asks for location, what should I do for location – Rohith Nambiar Dec 26 '21 at 12:17
i hope it will help you, please check this [answer](https://stackoverflow.com/questions/64305469/how-to-convert-datetime-to-tzdatetime-in-flutter) – Jahidul Islam Dec 26 '21 at 12:25
RohithNambiar Check my answer – Masum Billah Sanjid Dec 27 '21 at 05:37
I tried tz.local but the notification never appears – Rohith Nambiar Dec 27 '21 at 09:58
updated my answer please check – Jahidul Islam Dec 27 '21 at 10:29
Thanks a lot, it worked after I changed isUTC to false – Rohith Nambiar Dec 27 '21 at 14:17

How to convert "MM/DD/YYYY" to TZDateTime format

2 Answers2