Your Second Flutter App

Nov 30 2021 · Dart 2.13, Flutter 2.2.3, Visual Studio Code

Part 1: Parse Network Data

05. Make a Network Call

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Previous episode: 04. Use a Model & Repository Next episode: 06. Parse the Network Response

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Most mobile apps make network calls to the Internet to send and retrieve data to a backend server or API.

https://pub.dev/packages/http

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

final uri = Uri.parse(url);
final response = await http.get(uri);

final apiResponse = json.decode(response.body) as Map<String, dynamic>;
print(apiResponse);

class CoursesController {
}

import '../../repository/repository.dart';
import '../../repository/course_repository.dart';
import '../../model/course.dart';

final Repository _repository = CourseRepository();

  Future<List<Course>> fetchCourses(int domainFilter) {
    return _repository.getCourses(domainFilter);
  }

final _controller = CoursesController();

    return FutureBuilder<List<Course>>(
        future: _controller.fetchCourses(Constants.allFilter),
);

builder: (context, snapshot) {
  final courses = snapshot.data;
  if (courses == null) {
    return const Center(child: CircularProgressIndicator());
  }
  return const Text('RWCourses');
}

import '../../model/course.dart';

import 'ui/courses/courses_page.dart';

@override
Widget build(BuildContext context) {
  return Scaffold(
    appBar: AppBar(
      title: Text(Strings.appTitle),
    ),
    body: const CoursesPage(),
  );
}