How to format DateTime in Flutter , How to get current time in flutter?

You can use DateFormat from intl package.

import 'package:intl/intl.dart';

DateTime now = DateTime.now();
String formattedDate = DateFormat('yyyy-MM-dd – kk:mm').format(now);

Add intl package to your pubspec.yaml file.

import 'package:intl/intl.dart';

DateFormat dateFormat = DateFormat("yyyy-MM-dd HH:mm:ss");

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Converting DateTime object to String

String string = dateFormat.format(DateTime.now());

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Converting String to DateTime object

DateTime dateTime = dateFormat.parse("2019-07-19 8:40:23");

With this approach, there is no need to import any library.

DateTime now = DateTime.now();

String convertedDateTime = "${now.year.toString()}-${now.month.toString().padLeft(2,'0')}-${now.day.toString().padLeft(2,'0')} ${now.hour.toString()}-${now.minute.toString()}";

Output

2020-12-05 14:57