How did you make calls and receive responses from external APIs in your projects?

In Flutter, external APIs are usually called using the http package or more advanced libraries, such as dio.

Main approach:

1. Import the http package.
2. Make an asynchronous request (GET, POST, etc.) to the desired URL.
3. Handle the response, for example, parse JSON.

Example using http:

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

Future<void> fetchData() async {
  final response = await http.get(Uri.parse('https://api.example.com/data'));

  if (response.statusCode == 200) {
    final data = jsonDecode(response.body);
    print(data);
  } else {
    print('Error: ${response.statusCode}');
  }
}

This approach makes it easy to integrate external services, retrieve data, and use it in your application.