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Apr 14, 2024 · A powerful HTTP networking package for Dart/Flutter, supports Global configuration, Interceptors, FormData, Request cancellation, File uploading/downloading, Timeout, Custom adapters, Transformers, etc. Don't forget to add #dio topic to your published dio related packages! See more: https://dart.dev/tools/pub/pubspec#topics.
- What Is Dio?
- Getting Started
- Testing with API Data
- Defining A Model Class
- Initialize Dio
- Choosing and Defining Your Base
- Uploading Files
- Interceptors
- Conclusion
Dio is a powerful HTTP client for Dart. It has support for interceptors, global configuration, FormData, request cancellation, file downloading, and timeout, among others. Flutter offers an http packagethat’s nice for performing basic network tasks but is pretty daunting to use when handling some advanced features. By comparison, Dio provides an in...
Let’s get started by creating a new Flutter project. Use the following command: You can open the project using your favorite IDE, but for this example, I’ll be using VS Code: Add the Dio package to your pubspec.yamlfile: Replace the content of your main.dartfile with the following: We will define the HomePageclass after fetching the network data. N...
We will use REQ | RESto test our network data because it provides you with a hosted REST API consisting of sample user data and allows you to perform a variety of network operation tests. We will start by doing a simple GET request for fetching SingleUserdata. The endpoint required for that is: Note here that has to be replaced with an integer ...
If you want to easily handle the data returned from a REST API request, you’ll want to define a model class. For now, we’ll just define a simple class for storing single user data. You can use either pure Dart code or a library interchangeably without making any other changes in the same example app. We’ll define a model class manually like this: T...
You can create a separate class containing the methods for performing the network operations. This helps to separate the functional logic from the user interface code. To do this, create a new file dio_client.dart containing the DioClientclass: You can initialize Dio using the following: Define the base URL of the API server: Now, we can define the...
Instead of passing the endpoint with baseUrl every time, you can just define it inside BaseOptions and pass it once while instantiating Dio. To do this, you’ll want to initialize Dioas follows: This method provides various other customizations as well — in this same example, we have defined the connectTimeout and receiveTimeoutfor the requests.
Dio makes the process of uploading files to a server much simpler. It can process multiple simultaneous file uploads and has a simple callback for tracking their progress, which makes it much easier to use than the httppackage. You can easily upload files to a server using FormDataand Dio. Here’s an example of what sending an image file to the API ...
You can intercept Dio requests, responses, and errors before they are handled by using then or catchError. In a practical scenario, interceptors are useful for authorization using JSON Web Tokens (JWT), parsing JSON, handling errors, and easily debugging Dio network requests. You can run the interceptor by overriding the callbacks at three places: ...
Networking in Flutter using Dio feels like a breeze and it gracefully handles many edge cases. Dio makes it easier to handle multiple simultaneous network requests, all with the safety of an advanced error handling technique. It also allows you to avoid the boilerplate code you’d need to use the http package for tracking any file upload progress. A...
A powerful HTTP client for Dart and Flutter, which supports global settings, Interceptors, FormData, aborting and canceling a request, files uploading and downloading, requests timeout, custom adapters, etc. - cfug/dio.
Feb 20, 2023 · Step 1: Installing Dio. To use Dio in a Flutter application, you need to add the package to your project. You can do this by adding the following line to your pubspec.yaml file: dependencies:...
Sep 6, 2023 · This concise, code-focused article shows you how to use Dio to fetch data from the internet in Flutter. Without any further ado (like explaining what Flutter is or rambling about its history), let’s get started.
Jan 1, 2024 · Dio, a powerful HTTP client for Dart/Flutter, simplifies tasks of fetching data from the web, managing requests, and handling responses. This comprehensive guide provides step-by-step...
