Building a News App with API Integration

This example shows how to fetch data from an API and display it in a list format.

import 'package:flutter/material.dart';
import 'package:http/http.dart' as http;
import 'dart:convert';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'News App',
      theme: ThemeData(primarySwatch: Colors.blue),
      home: NewsList(),
    );
  }
}

class NewsList extends StatefulWidget {
  @override
  _NewsListState createState() => _NewsListState();
}

class _NewsListState extends State<NewsList> {
  List _articles = [];
  bool _loading = true;

  @override
  void initState() {
    super.initState();
    _fetchNews();
  }

  Future<void> _fetchNews() async {
    final response = await http.get(Uri.parse('https://newsapi.org/v2/top-headlines?country=us&apiKey=YOUR_API_KEY'));

    if (response.statusCode == 200) {
      setState(() {
        _articles = json.decode(response.body)['articles'];
        _loading = false;
      });
    } else {
      throw Exception('Failed to load news');
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('News App'),
      ),
      body: _loading
          ? Center(child: CircularProgressIndicator())
          : ListView.builder(
              itemCount: _articles.length,
              itemBuilder: (context, index) {
                final article = _articles[index];
                return Card(
                  child: ListTile(
                    title: Text(article['title']),
                    subtitle: Text(article['description'] ?? ''),
                    onTap: () {
                      Navigator.push(
                        context,
                        MaterialPageRoute(
                          builder: (context) => ArticleDetail(url: article['url']),
                        ),
                      );
                    },
                  ),
                );
              },
            ),
    );
  }
}

class ArticleDetail extends StatelessWidget {
  final String url;

  ArticleDetail({required this.url});

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: Text('Article')),
      body: Center(
        child: Text('Open URL: $url'),
      ),
    );
  }
}