Making authenticated requests
In order to fetch data from many web services, you need to provide
authorization. There are many ways to do this, but perhaps the most common
requires using the Authorization HTTP header.
Add Authorization Headers
The http package provides a
convenient way to add headers to your requests. You can also take advantage of
the dart:io package for common HttpHeaders.
Future<http.Response> fetchPost() {
return http.get(
'https://jsonplaceholder.typicode.com/posts/1',
// Send authorization headers to your backend
headers: {HttpHeaders.AUTHORIZATION: "Basic your_api_token_here"},
);
}
Complete Example
This example builds upon the Fetching Data from the Internet recipe.
import 'dart:async';
import 'dart:convert';
import 'dart:io';
import 'package:http/http.dart' as http;
Future<Post> fetchPost() async {
final response = await http.get(
'https://jsonplaceholder.typicode.com/posts/1',
headers: {HttpHeaders.AUTHORIZATION: "Basic your_api_token_here"},
);
final json = JSON.decode(response.body);
return new Post.fromJson(json);
}
class Post {
final int userId;
final int id;
final String title;
final String body;
Post({this.userId, this.id, this.title, this.body});
factory Post.fromJson(Map<String, dynamic> json) {
return new Post(
userId: json['userId'],
id: json['id'],
title: json['title'],
body: json['body'],
);
}
}