main.dart

import 'package:flutter/material.dart';
void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.red,
      ),
      home: MyHomePage(title: 'Epic Page'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  MyHomePage({Key key, this.title}) : super(key: key);


  final String title;

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

class _MyHomePageState extends State<MyHomePage> {
  TimeOfDay _time = TimeOfDay.now();
  TimeOfDay picked;

  Future<Null> selectTime(BuildContext context) async {
    picked = await showTimePicker(
      context: context,
      initialTime: _time,
    );

    setState(() {
      _time = picked;
      print(_time);
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: Center(

          child: Center(
            child: Column(
              children: [
                Text("$_time"),
                IconButton(
                  icon: Icon(Icons.alarm),
                  onPressed: () {
                    selectTime(context);
                  },
                ),
              ],
            ),
          )
      ),
    );
  }
}