I am revisiting one my apps which I use WidgetKit, it worked fine in it’s implementation however when running for iOS 17 with Xcode 15 the data no longer reads/writes from user defaults.

From the main iOS app I write to the UserDefaults

// Set
let list = ["one", "two", "three"]
var AppGroup: String {
    "group.com.appname.com.contents"
}

let defaults = UserDefaults(suiteName: AppGroup)!

defaults.set(payments, forKey: "todolist")

Then I read the data on the Widget extension like so

class DataHelper {

    var list: [String] {
        return defaults!.object(forKey: "todolist") as? [String] ?? [String]()
    }

}

In the WidgetView

struct ListWidget: Widget {
    let kind: String = "ListWidget"
    
    let dataHelper = DataHelper()

    var body: some WidgetConfiguration {
        StaticConfiguration(kind: kind, provider: ListProvider()) { entry in
            ListWidgetView(budgets: dataHelper.todolist)
        }
        .configurationDisplayName("List")
        .description("See your List")
        .supportedFamilies([.systemSmall])
    }
}


struct ListWidgetView : View {
    
    @Environment(.widgetFamily) var family: WidgetFamily
    
    var list: [String]
    
    @ViewBuilder
    var body: some View {
        switch family {
        case .systemLarge:  ListOverview(list: todolist)
        default:  ListOverview(budgets: list)
        }
    }
}

struct ListOverview : View {
    
    var list: [String]

    var todolist: [String[ {
        if list.isEmpty {
            return "no list". <-- THIS IS RETURNED
        } else {
            return list[0]
        }

    }
    
    var body: some View {
        // Progress Ring
        ZStack(alignment:.center) {
            //Label
            VStack(alignment: .center, spacing: 8) {
                Text(todolist)
                    .foregroundStyle(.white)
                    .lineLimit(1)
            }
        }
        .containerBackground(Color.black, for: .widget)
    }
}