Api Calls

2 min read
Create a .env file in the root folder.
//Terminal
flutter pub get flutter_dotenv
flutter pub add
Open this file:android/app/src/main/AndroidManifest.xml
<uses-permission android:name="android.permission.INTERNET" />
Now add .env file to assets
assets:
- .env
Now in main.dart
import 'package:flutter/material.dart';
import 'package:flutter_dotenv/flutter_dotenv.dart';
Future<void> main() async {
WidgetsFlutterBinding.ensureInitialized();
try {
await dotenv.load(fileName: ".env");
print('✅ API Key loaded: ${dotenv.env['API_KEY']}');
runApp(const MyApp());
} on EmptyEnvFileError catch (e) {
print('❌ .env file is missing or empty: $e');
runApp(const ErrorApp(message: 'Missing .env file.'));
} catch (e, stack) {
print('❌ Unexpected error: $e');
print('Stack: $stack');
runApp(const ErrorApp(message: 'Unexpected error.'));
}
}
class MyApp extends StatelessWidget {
const MyApp({super.key});
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
useMaterial3: true,
),
home: const Home(), //call your next page
);
}
}
class ErrorApp extends StatelessWidget {
final String message;
const ErrorApp({super.key, required this.message});
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Startup Error',
home: Scaffold(
appBar: AppBar(title: const Text('Error'), backgroundColor: Colors.red),
body: Center(
child: Text(
message,
style: const TextStyle(fontSize: 18, color: Colors.red),
textAlign: TextAlign.center,
),
),
),
);
}
}
Now Run the app
✅ API Key loaded:’api_ke ’ //if this gets printed in your console then you are in right path.
Now for Api call create a fetch function.
final key = dotenv.env['API_KEY'];
Map result = {};
Future<List> fetchApi() async {
// var response = await http.get(
// 'https://newsapi.org/v2/top-headlines?country=us&category=Technology&apiKey= $key',
// );
final uri = Uri.https('newsapi.org', '/v2/top-headlines', {
'country': 'us',
'category': 'technology',
'q': searchhh.searchcontroller.text,
'apiKey': key!,
});
try {
final response = await http.get(uri);
if (response.statusCode == 200) {
// ✅ Parse JSON
result = convert.jsonDecode(response.body);
print(result);
} else {
print('❌ Error: ${response.statusCode}');
}
} catch (e) {
print('❌ Exception: $e');
}
return (result['articles']);
}
Now call the initstate function in hompage.(This function will be the first functionto run when app starts).
@override
void initState() {
super.initState();
fetchApi();
}x
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