ios - 如何实现SwiftUI刷新以获取新的网络数据？

Question

我想添加下拉刷新，但是我不确定哪种方法是最好的。

//DataModel
    struct Post: Codable, Hashable,Identifiable {
        let id: Int
        let username: String
        let body: String
    }

     class Service {
            static let shared = Service()
            enter code here
            func fetchPosts(completion: @escaping ([Post]) -> ()) {
                guard let url = URL(string: "http://localhost:1337/post") else {
                    fatalError("URL is not correct!")
                }
                URLSession.shared.dataTask(with: url) { data, _, _ in
                    let posts = try! JSONDecoder().decode([Post].self, from: data!)
                    DispatchQueue.main.async {
                        completion(posts)
                    }
                }.resume()
            }
        }

        struct Find: View {

            @State var model = PostListViewModel()

            var body: some View {
                List {
                    ForEach(model.posts) { post in
                        Text(post.username)
                    }
                }
            }
        }

任何帮助将非常感激！！

Answer 1

这是一篇文章，目的是实现异步数据的“刷新”功能，
我认为这可能有所帮助。

https://swiftui-lab.com/scrollview-pull-to-refresh/