How can I fetch data in SwiftUI?

How can I fetch data in SwiftUI?

You can use the @State and @ObservedObject properties to manage data in SwiftUI. Would you like an example?

Yes, please provide an example of fetching data from a REST API.

Sure! You can use URLSession to fetch data. Here's a simple example:

struct ContentView: View {
    @State private var items: [Item] = []

    var body: some View {
        List(items) { item in
            Text(item.name)
        }
        .onAppear(perform: loadData)
    }

    func loadData() {
        guard let url = URL(string: "https://api.example.com/items") else { return }
        URLSession.shared.dataTask(with: url) { data, response, error in
            if let data = data {
                let decodedItems = try? JSONDecoder().decode([Item].self, from: data)
                DispatchQueue.main.async {
                    self.items = decodedItems ?? []
                }
            }
        }.resume()
    }
}

What is the Item struct in this example?

The Item struct represents the data model. It should conform to Codable and look something like this:

struct Item: Identifiable, Codable {
    var id: Int
    var name: String
}