Refreshable.swift

Refreshable.swift

enum Loading {
    case loading
    case loaded(String)
}

struct LoadingView: View {
    @State var state: Loading = .loading
    var body: some View {
        List {
            switch state {
            case .loading:
                ProgressView()
                    .task {
                        await load()
                    }
            case .loaded(let string):
                Text(string)
            }
        }
        .refreshable {
            await reload()
        }
   }
    func load() async {
        try? await Task.sleep(nanoseconds: 1_000_000_000 * 3)
        state = .loaded("loaded")
    }
    func reload() async {
        guard case .loaded = state else {
            return
        }
        try? await Task.sleep(nanoseconds: 1_000_000_000 * 3)
        state = .loaded("reloaded")
    }
}