SwiftUILists : Building a simple List based app using SwiftUI

Create a simple multiplatform practice app using SwiftUI for Mac, iOS and iPadOS.


This is a demo app that showcases how easy it is to spin up a list based app in SwiftUI. There are 4 tab surfaces in this demo:

  1. Posts
  2. Photos
  3. CoreData
  4. Grid

It uses async/ await concurrency api’s for network interaction, and uses the https://jsonplaceholder.typicode.com api’s as network api source. This is a simple REST api, and can be used by developers free of cost for testing their demo apps.


To build this surface, I used the https://jsonplaceholder.typicode.com/posts api to present the list of posts. The fetch api uses the try await URLSession.shared.data(from: url) async api to retrieve the data list and then uses a JSONDecoder to map the list into a memory managed list of objects which have the following structure.

struct Post: AbstractModel, Codable, Hashable {
    let userId: Int
    var id: Int
    var title: String
    var body: String
    var isFavorite: Bool? = false

Once the list is populated, then reloading the data is a very simple step by spinning up a task associated with the main List object in the body of the view.

.task {
    do {
        if self.feed.posts.isEmpty {
            if let posts = try await network.fetch(.posts) as? [Post] {
                self.feed.posts = posts
    } catch {
        print("Failed to retrieve posts")

To pass state between the main parent view and the child view that renders the content of each cell, I used @Binding property wrapper. This allows changes in both parent and child to reflect in each other. Using this, I was able to mark cells as favorited or now by using the trailing swipe actions. An example of this behavior is shown in this video.


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