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

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

class UbahJadwal extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      home: AlarmApp(),
    );
  }
}

class AlarmApp extends StatefulWidget {
  @override
  _AlarmAppState createState() => _AlarmAppState();
}

class _AlarmAppState extends State<AlarmApp> {
  DateTime _selectedTime = DateTime.now();
  TimeOfDay _selectedAlarmTime = TimeOfDay(hour: 0, minute: 0);

  void _showTimePicker() async {
    final TimeOfDay? selectedTime = await showTimePicker(
      context: context,
      initialTime: _selectedAlarmTime,
    );

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

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            Text(
              "Waktu Sekarang",
              style: TextStyle(fontSize: 18),
            ),
            Text(
              DateFormat('HH:mm:ss').format(_selectedTime),
              style: TextStyle(fontSize: 32),
            ),
            SizedBox(height: 20),
            Text(
              "Waktu Alarm",
              style: TextStyle(fontSize: 18),
            ),
            Text(
              _selectedAlarmTime.format(context),
              style: TextStyle(fontSize: 32),
            ),
            SizedBox(height: 20),
            ElevatedButton(
              onPressed: _showTimePicker,
              child: Text("Atur Alarm"),
            ),
          ],
        ),
      ),
    );
  }
}