How to using the fetched data in swiftUI - swift

Question

I am currently working on an IOS app, I am trying to design a carousel with the fetched json data. This is how I get the targeted json data.
class loadDate: ObservableObject {
#Published var todos = [Result]()
init() {
let url = URL(string: "https://api.themoviedb.org/3/movie/now_playing?api_key=<api_key>&language=en-US&page=1")!
URLSession.shared.dataTask(with: url) { data, response, error in
// step 4
if let data = data {
if let decodedResponse = try? JSONDecoder().decode(Response.self, from: data) {
DispatchQueue.main.async {
self.todos = decodedResponse.results
}
// everything is good, so we can exit
return
}
}
print("Fetch failed: \(error?.localizedDescription ?? "Unknown error")")
}.resume()
}
}
It looks like I can only use the data in a list view, for example,
struct ContentView: View {
#ObservedObject var fetch = loadDate()
var body: some View {
HStack {
List(fetch.todos) { item in
HStack {
VStack(alignment: .leading) {
Text(item.title)
.font(.headline)
Text(item.poster_path)
//
}
}
}
}
}
}
Within this list view, I can access all elements like using fetch.todos[0].title. However, if outside the list view, fetch.todos[0].title would fail, can someone give some advice on how to use the data outside the list view .

Answer 1

You should provide a working example. (https://stackoverflow.com/help/minimal-reproducible-example)
But if todos is an empty array, fetch.todos[0].title will always fail. So whenever you need to access your todos directly you can use something like this
Group {
if fetch.todos.count > 0 {
Text("Title of first todo \(fetch.todos[0].title)")
} else {
Text("Todos are empty")
}
}

Answer 2

Try this:
class loadDate: ObservableObject {
#Published var todos : Result? = nil // Step 1
// ...
}
struct ContentView: View {
#ObservedObject var fetch = loadDate()
var body: some View {
HStack {
if let todos = fetch.todos {
VStack{
Text(todos.title)
.font(.headline)
Text(todos.poster_path)
}
}
}
}
}
https://stackoverflow.com/a/66695683/14287797