ios – index out of certain from TabViewStyle of SwiftUI

I’m making an attempt to implement a tabView that takes a listing of things into pages that I might swipe backwards and forwards. Nevertheless, it retains bugging out with an “index out of certain” error. It is complicated to me as a result of I by no means set index in any respect, and I do not know easy methods to power an index both…

Beneath are my code. Apologize for any naive code, I’m new to SwiftUI. Any helps are appreciated, thanks!

import SwiftUI

//@Printed non-public var listing = QuestionList.self
struct QuestionList: Codable {
    var listing:[QuestionItem]
}

class QuestionItem: Codable, Identifiable {
    var id: Int
    var textual content: String
    var kind: Int
    var reply: String
}


struct ContentView: View {
    @State non-public var qlist = [QuestionItem]()
    @State non-public var isShowForm = false
    @State non-public var q1 = true
    @State non-public var reply = ""
    @State non-public var isOn = [Bool]()
    @State non-public var selectedTab = 0
    func showForm() {
        isShowForm = !isShowForm
        let url = URL(string: "http://127.0.0.1:3000/query")!
        let process = URLSession.shared.dataTask(with: url) {
            knowledge, response, error in
            if let error = error {
                print(error)
                return
            }
            guard let httpResponse = response as? HTTPURLResponse,
                  (200...299).accommodates(httpResponse.statusCode) else {
                      print(response)
                      return
                  }
            guard let knowledge = knowledge else {
                return
            }
            do {
                let listing = strive JSONDecoder().decode([QuestionItem].self, from:knowledge)
                qlist = listing
                print(qlist[1])
                for i in 0..<qlist.depend {
                    isOn.append(qlist[i].kind == 0)
                }
                print(isOn)
//                print(isOn)
                print(kind(of: qlist[1]))
            } catch {
                print("error: ", error)
            }
        }
        process.resume()
    }
    var physique: some View {
        Textual content("Whats up, world!")
            .padding()
        Button("Open Kind") {
            self.showForm()
        }

        if (isShowForm) {
            TabView(choice: $selectedTab) {
                ForEach(qlist.indices, id: .self) { index in
                    if qlist[index].kind == 0 {
                        HStack {
                            Textual content("(self.qlist[index].textual content)")
//                            Toggle("", isOn: $isOn[index])
                            Toggle("", isOn: $q1)
                        }
                    } else {
                        VStack {
                            Textual content("(self.qlist[index].textual content)")
//                                .lineLimit(2)
//                                .multilineTextAlignment(.main)
                                .fixedSize(horizontal: false, vertical: true)
//                                .body(width: 300)
                            TextField("Enter your reply right here:", textual content: $qlist[index].reply) {
                            }
                        }
                    }
                }
            }
        .tabViewStyle(.web page(indexDisplayMode: .all the time))
        .indexViewStyle(.web page(backgroundDisplayMode: .all the time))
        }
    }
}


struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}