Fetching remote data in SwiftUI

One of the operations made easier by the async await model is network data transfer operations. Fetching data from a network resource is an asynchronous operation by definition and until now, we had to manage it with the completion block mechanism.

iOS 15 added an async await interface to the URLSession class to embrace the new pattern. In this recipe, we’ll implement a class to download data from a remote service and present it in a SwiftUI view.

We’ll use a free service called JSONPlaceholder (https://jsonplaceholder.typicode.com) that provides a free fake API for testing purposes. The service has multiple resources with relations among them.

The app we’ll implement will have a view with a list of fake users to choose from, and another view to present the different fake blog posts for the user we selected.

Getting ready

Create a SwiftUI app called FakePosts.

How to do it…

We are going to implement...