실생활 앱 (날씨 앱)

import 'package:flutter/material.dart';

class Weather {
  const Weather({required this.city, required this.temp, required this.description});
  final String city;
  final int temp;
  final String description;

  factory Weather.fromJson(Map<String, dynamic> json) {
    return Weather(
      city: json['city'] as String,
      temp: json['temp'] as int,
      description: json['description'] as String,
    );
  }
}

class WeatherApiApp extends StatefulWidget {
  const WeatherApiApp({super.key});

  @override
  State<WeatherApiApp> createState() => _WeatherApiAppState();
}

class _WeatherApiAppState extends State<WeatherApiApp> {
  final cityController = TextEditingController(text: 'Seoul');
  Weather? weather;
  bool loading = false;
  String error = '';

  Future<void> fetchWeather() async {
    setState(() {
      loading = true;
      error = '';
    });
    await Future.delayed(const Duration(seconds: 1));
    final json = {'city': cityController.text, 'temp': 27, 'description': '맑음'};
    setState(() {
      weather = Weather.fromJson(json);
      loading = false;
    });
  }

  @override
  Widget build(BuildContext context) {
    return Column(
      children: [
        TextField(controller: cityController),
        ElevatedButton(onPressed: fetchWeather, child: const Text('날씨 조회')),
        if (loading) const CircularProgressIndicator(),
        if (error.isNotEmpty) Text(error),
        if (weather != null)
          ListTile(
            title: Text(weather!.city),
            subtitle: Text(weather!.description),
            trailing: Text(weather!.temp.toString() + '°C'),
          ),
      ],
    );
  }
}

Card(
  child: Padding(
    padding: const EdgeInsets.all(20),
    child: Column(
      crossAxisAlignment: CrossAxisAlignment.start,
      children: [
        const Text(
          '일정 예약 관리',
          style: TextStyle(fontSize: 22, fontWeight: FontWeight.w900),
        ),
        const SizedBox(height: 16),
        Text('충돌: $conflict', style: const TextStyle(fontWeight: FontWeight.w900)),
      const SizedBox(height: 12),
      TextField(controller: titleController),
      TextField(controller: hourController, keyboardType: TextInputType.number),
      FilledButton(onPressed: addSchedule, child: const Text('예약'))
      ],
    ),
  ),
)