Flutter Date and Time Picker

In Flutter, you can use the built-in showDatePicker and showTimePicker functions to display date and time pickers. Below are examples of how to implement both.

1. Date Picker You can use showDatePicker to display a date picker dialog and retrieve the selected date.

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: DateTimePickerDemo(),
    );
  }
}

class DateTimePickerDemo extends StatefulWidget {
  @override
  _DateTimePickerDemoState createState() => _DateTimePickerDemoState();
}

class _DateTimePickerDemoState extends State<DateTimePickerDemo> {
  DateTime? selectedDate;

  Future<void> _selectDate(BuildContext context) async {
    final DateTime? pickedDate = await showDatePicker(
      context: context,
      initialDate: DateTime.now(), // Current date
      firstDate: DateTime(2000), // Earliest date
      lastDate: DateTime(2101),  // Latest date
    );

    if (pickedDate != null && pickedDate != selectedDate)
      setState(() {
        selectedDate = pickedDate;
      });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: Text("Date Picker")),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            Text(
              selectedDate == null
                  ? 'No date selected!'
                  : 'Selected date: ${selectedDate.toString()}',
            ),
            SizedBox(height: 20),
            ElevatedButton(
              onPressed: () => _selectDate(context),
              child: Text('Select Date'),
            ),
          ],
        ),
      ),
    );
  }
}

1. Time Picker Similarly, you can use **showTimePicker **to display a time picker dialog.

Future<void> _selectTime(BuildContext context) async {
  final TimeOfDay? pickedTime = await showTimePicker(
    context: context,
    initialTime: TimeOfDay.now(),
  );

  if (pickedTime != null)
    setState(() {
      selectedTime = pickedTime;
    });
}

To include both date and time pickers, you can modify the code to add a time picker next to the date picker.

1. Date and Time Picker Combined

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: DateTimePickerDemo(),
    );
  }
}

class DateTimePickerDemo extends StatefulWidget {
  @override
  _DateTimePickerDemoState createState() => _DateTimePickerDemoState();
}

class _DateTimePickerDemoState extends State<DateTimePickerDemo> {
  DateTime? selectedDate;
  TimeOfDay? selectedTime;

  Future<void> _selectDate(BuildContext context) async {
    final DateTime? pickedDate = await showDatePicker(
      context: context,
      initialDate: DateTime.now(),
      firstDate: DateTime(2000),
      lastDate: DateTime(2101),
    );
    if (pickedDate != null && pickedDate != selectedDate)
      setState(() {
        selectedDate = pickedDate;
      });
  }

  Future<void> _selectTime(BuildContext context) async {
    final TimeOfDay? pickedTime = await showTimePicker(
      context: context,
      initialTime: TimeOfDay.now(),
    );
    if (pickedTime != null && pickedTime != selectedTime)
      setState(() {
        selectedTime = pickedTime;
      });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: Text("Date & Time Picker")),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            Text(
              selectedDate == null
                  ? 'No date selected!'
                  : 'Selected date: ${selectedDate.toString()}',
            ),
            Text(
              selectedTime == null
                  ? 'No time selected!'
                  : 'Selected time: ${selectedTime.format(context)}',
            ),
            SizedBox(height: 20),
            ElevatedButton(
              onPressed: () => _selectDate(context),
              child: Text('Select Date'),
            ),
            ElevatedButton(
              onPressed: () => _selectTime(context),
              child: Text('Select Time'),
            ),
          ],
        ),
      ),
    );
  }

Explanation:

• showDatePicker: Opens a date picker and returns the selected date.
• showTimePicker: Opens a time picker and returns the selected time.