Time and Date Picker in flutter

Time Picker

TimeOfDay selectedTime = TimeOfDay.now();

Future _selectTime(BuildContext context) async {
final TimeOfDay picked_s = await showTimePicker(
    context: context,
    initialTime: selectedTime, builder: (BuildContext context, Widget child) {
       return MediaQuery(
         data: MediaQuery.of(context).copyWith(alwaysUse24HourFormat: false),
        child: child,
      );});

if (picked_s != null && picked_s != selectedTime )
  setState(() {
    selectedTime = picked_s;
  });
}

Date Picker

import 'dart:async';

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      home: MyHomePage(),
    );
  }
}

class MyHomePage extends StatefulWidget {

  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State {
  DateTime selectedDate = DateTime.now();

  Future _selectDate(BuildContext context) async {
    final DateTime picked = await showDatePicker(
        context: context,
        initialDate: selectedDate,
        firstDate: DateTime(2015, 8),
        lastDate: DateTime(2101));
    if (picked != null && picked != selectedDate)
      setState(() {
        selectedDate = picked;
      });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('date picker'),
      ),
      body: Center(
        child: Column(
          mainAxisSize: MainAxisSize.min,
          children: [
            Text("${selectedDate.toLocal()}".split(' ')[0]),
            SizedBox(height: 20.0,),
            RaisedButton(
              onPressed: () => _selectDate(context),
              child: Text('Select date'),
            ),
          ],
        ),
      ),
    );
  }
}