flutter_datetime_picker/example/lib/main.dart

import 'package:flutter/material.dart';
import 'package:flutter_datetime_picker/flutter_datetime_picker.dart';

void main() => runApp(new MyApp());

class MyApp extends StatelessWidget {
  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return new MaterialApp(
      title: 'Flutter Demo',
      theme: new ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: new HomePage(),
    );
  }
}

class HomePage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Datetime Picker'),
      ),
      body: Center(
        child: Column(
          children: <Widget>[
            FlatButton(
                onPressed: () {
                  DatePicker.showDatePicker(context,
                      showTitleActions: true,
                      minTime: DateTime(2018, 3, 5),
                      maxTime: DateTime(2019, 6, 7),
                      theme: DatePickerTheme(
                          backgroundColor: Colors.blue,
                          itemStyle: TextStyle(
                              color: Colors.white, fontWeight: FontWeight.bold),
                          doneStyle:
                              TextStyle(color: Colors.white, fontSize: 16)),
                      onChanged: (date) {
                    print('change $date in time zone ' +
                        date.timeZoneOffset.inHours.toString());
                  }, onConfirm: (date) {
                    print('confirm $date');
                  }, currentTime: DateTime.now(), locale: LocaleType.en);
                },
                child: Text(
                  'show date picker(custom theme &date time range)',
                  style: TextStyle(color: Colors.blue),
                )),
            FlatButton(
                onPressed: () {
                  DatePicker.showTimePicker(context, showTitleActions: true,
                      onChanged: (date) {
                    print('change $date in time zone ' +
                        date.timeZoneOffset.inHours.toString());
                  }, onConfirm: (date) {
                    print('confirm $date');
                  }, currentTime: DateTime.now());
                },
                child: Text(
                  'show time picker',
                  style: TextStyle(color: Colors.blue),
                )),
            FlatButton(
                onPressed: () {
                  DatePicker.showDateTimePicker(context, showTitleActions: true,
                      onChanged: (date) {
                    print('change $date in time zone ' +
                        date.timeZoneOffset.inHours.toString());
                  }, onConfirm: (date) {
                    print('confirm $date');
                  },
                      currentTime: DateTime(2008, 12, 31, 23, 12, 34),
                      locale: LocaleType.zh);
                },
                child: Text(
                  'show date time picker (Chinese)',
                  style: TextStyle(color: Colors.blue),
                )),
            FlatButton(
                onPressed: () {
                  DatePicker.showDateTimePicker(context, showTitleActions: true,
                      onChanged: (date) {
                    print('change $date in time zone ' +
                        date.timeZoneOffset.inHours.toString());
                  }, onConfirm: (date) {
                    print('confirm $date');
                  }, currentTime: DateTime(2008, 12, 31, 23, 12, 34));
                },
                child: Text(
                  'show date time picker (English-America)',
                  style: TextStyle(color: Colors.blue),
                )),
            FlatButton(
                onPressed: () {
                  DatePicker.showDateTimePicker(context, showTitleActions: true,
                      onChanged: (date) {
                    print('change $date in time zone ' +
                        date.timeZoneOffset.inHours.toString());
                  }, onConfirm: (date) {
                    print('confirm $date');
                  },
                      currentTime: DateTime(2008, 12, 31, 23, 12, 34),
                      locale: LocaleType.nl);
                },
                child: Text(
                  'show date time picker (Dutch)',
                  style: TextStyle(color: Colors.blue),
                )),
            FlatButton(
                onPressed: () {
                  DatePicker.showDateTimePicker(context, showTitleActions: true,
                      onChanged: (date) {
                    print('change $date in time zone ' +
                        date.timeZoneOffset.inHours.toString());
                  }, onConfirm: (date) {
                    print('confirm $date');
                  },
                      currentTime: DateTime(2008, 12, 31, 23, 12, 34),
                      locale: LocaleType.ru);
                },
                child: Text(
                  'show date time picker (Russian)',
                  style: TextStyle(color: Colors.blue),
                )),
            FlatButton(
                onPressed: () {
                  DatePicker.showDateTimePicker(context, showTitleActions: true,
                      onChanged: (date) {
                    print('change $date in time zone ' +
                        date.timeZoneOffset.inHours.toString());
                  }, onConfirm: (date) {
                    print('confirm $date');
                  },
                      currentTime: DateTime.utc(2019, 12, 31, 23, 12, 34),
                      locale: LocaleType.de);
                },
                child: Text(
                  'show date time picker in UTC (German)',
                  style: TextStyle(color: Colors.blue),
                )),
          ],
        ),
      ),
    );
  }
}