Updating List from JSON data SwiftUI - ios

Question

I'm having a hard time understanding how JSON data is supposed to be updated in a List in SwiftUI. I'm fetching data from NewsAPI.org, my list and detail views work just fine. I'm trying to figure out how to keep the list up-to-date when my json data changes, but the data remains outdated. I'm still a beginner to swift so if I made a mistake any help would be greatly appreciated.
UPDATED
Attempted to use combine with the same results, outdated data
New data class
class NewsData: ObservableObject {
var objectWillChange = PassthroughSubject<NewsData, Never>()
#Published var articles = [Article]() {
willSet {
objectWillChange.send(self)
}
}
init() {
guard let url = URL(string: "http://newsapi.org/v2/top-headlines?country=us&apiKey=API_KEY") else { return }
let request = URLRequest(url: url)
URLSession.shared.dataTask(with: request) { data, response, error in
if let data = data {
if let response = try? JSONDecoder().decode(News.self, from: data) {
DispatchQueue.main.async() {
self.articles = response.articles
}
}
}
}
.resume()
}
/*
init() {
URLSession.shared
.dataTaskPublisher(for: URLRequest(url: URL(string: "http://newsapi.org/v2/top-headlines?country=us&apiKey=API_KEY")!))
.map(\.data)
.decode(type: News.self, decoder: JSONDecoder())
.receive(on: DispatchQueue.main)
.sink(receiveCompletion: { completion in
switch completion {
case .finished:
break
case .failure(let error):
print(error.localizedDescription)
}
}, receiveValue: { data in
self.articles = data.articles
})
.store(in: &self.cancellables)
}
*/
/*
init() {
load()
}
func load() {
guard let url = URL(string: "http://newsapi.org/v2/top-headlines?country=us&apiKey=API_KEY") else { return }
let request = URLRequest(url: url)
URLSession.shared.dataTask(with: request) { data, response, error in
if let data = data {
if let response = try? JSONDecoder().decode(News.self, from: data) {
DispatchQueue.main.async() {
self.articles = response.articles
}
}
}
}
.resume()
}
*/
}
My data old class
struct News : Codable {
var articles : [Article]
}
struct Article : Codable {
let description : String?
let title : String?
let author: String?
let source: Source
let content: String?
let publishedAt: String?
}
struct Source: Codable {
let name: String?
}
class NewsData: ObservableObject {
#Published var news: News = News(articles: [])
init() {
load()
}
func load() {
guard let url = URL(string: "http://newsapi.org/v2/top-headlines?country=us&apiKey=API_KEY_HERE") else { return }
let request = URLRequest(url: url)
URLSession.shared.dataTask(with: request) { data, response, error in
if let data = data {
if let response = try? JSONDecoder().decode(News.self, from: data) {
DispatchQueue.main.async() {
self.news = response
}
}
}
}
.resume()
}
}
My ContentView
func relativeDate(date: String) -> String {
let formatter = RelativeDateTimeFormatter()
let dateFormatter = ISO8601DateFormatter()
return formatter.localizedString(for: dateFormatter.date(from: date) ?? Date(), relativeTo: Date())
}
struct ContentView: View {
#ObservedObject var news: NewsData
var body: some View {
NavigationView {
List(news.news.articles , id: \.title) { article in
VStack (alignment: .leading, spacing: 5){
Text(article.title ?? "")
.fontWeight(.bold)
.font(.subheadline)
.lineLimit(1)
Text(article.description ?? "")
.font(.subheadline)
.foregroundColor(.secondary)
.lineLimit(1)
Text(relativeDate(date: article.publishedAt ?? ""))
.font(.subheadline)
.foregroundColor(.secondary)
}
}
.navigationTitle("News")
}
}
}