SWIFT UI add element to array - xcode

Question

I trying to learn the new SwiftUI coding technique. I would like to click a button that will add elements to an array that is a #State variable. The button is the buttonclick function. The array is the push_group_row / push_group_array. I get an error in the append statement.
Eventually the buttonclick will access a database to build an array with more row, but for now I just trying to add one row.
Code:
import SwiftUI
import Combine
var gordon: String = "xxxxxx"
struct Result: Codable {
let trackId: Int
let trackName: String
let collectionName: String
}
struct Response: Codable {
var results: [Result]
}
struct Pokemon: Identifiable {
let id: Int
let name: String
let type: String
let color: Color
}
struct push_group_row {
let id: Int
let code: String
let title: String
}
struct ContentView: View
{
#State private var results = [Result]()
#State var pokemonList = [
Pokemon(id: 0, name: "Charmander", type: "Fire", color: .red),
Pokemon(id: 1, name: "Squirtle", type: "Water", color: .blue),
Pokemon(id: 2, name: "Bulbasaur", type: "Grass", color: .green),
Pokemon(id: 3, name: "Pikachu", type: "Electric", color: .yellow),]
#State var push_group_array = [push_group_row(id: 0, code: "code12", title: "POAFire")]
var body: some View
{
NavigationView
{
VStack(alignment: . leading){
Button(action: {
// What to perform
self.buttonclick()
}) {
// How the button looks like
Text("clickme")
.background(Color.purple)
.foregroundColor(.white)
}
List(results, id: \.trackId)
{item in
NavigationLink(destination: DetailView(lm: String(item.trackId)))
{
VStack(alignment: .leading)
{
Text(String(item.trackId))
Text(item.trackName)
.font(.headline)
Text(item.collectionName)
Text(gordon)
}
}
}
List(self.pokemonList)
{ pokemon in
HStack
{
Text(pokemon.name)
Text(pokemon.type).foregroundColor(pokemon.color)
}
}
List(push_group_array, id: \.id)
{ pg_item in
HStack
{
Text(String(pg_item.id))
Text(pg_item.code)
}
}
.onAppear(perform: self.loaddata)
}
.navigationBarTitle("x")
.navigationBarItems(
trailing: Button(action: addPokemon, label: { Text("Add") }))
Spacer()
}
}
func addPokemon() {
if let randomPokemon = pokemonList.randomElement() {
pokemonList.append(randomPokemon)
}
}
// *************************** below is the add arrat code
func buttonclick() {
let newCode = "First"
let newTitle = "Second"
push_group_array.append(id: 1, code: newCode, title: newTitle)
}
func loaddata()
{
print("loaddata")
guard let url = URL(string: "https://itunes.apple.com/search?term=taylor+swift&entity=song")
else
{
print("Invalid URL")
return
}
var urlData: NSData?
let request = URLRequest(url: url)
URLSession.shared.dataTask(with: request) { data, response, error in
if let data = data
{
if let decodedResponse = try? JSONDecoder().decode(Response.self, from: data)
{
DispatchQueue.main.async
{
urlData = data as NSData?
self.results = decodedResponse.results
print(self.results)
print(urlData ?? "urlData_Defaultvalue")
}
return
}
}
print("Fetch failed: \(error?.localizedDescription ?? "Unknown error")")
}.resume()
}
}
struct ContentView_Previews: PreviewProvider {
static var previews: some View {
ContentView()
}
}

Answer 1

You need to push the object rather than 3 values
push_group_array.append(push_group_row(id: 1, code: newCode, title: newTitle))