Hello,

I'm on Day 37 of the course and the amount is not saving to the main ContentView screen. It just shows up as $0.00. I copy-pasted the code from the github, but it still doesn't work. I'm on Xcode 15.0, the latest version. Here is my code:

ContentView:

import SwiftUI

struct ContentView: View {
    @StateObject var expenses = Expenses()
    @State private var showingAddExpense = false

    var body: some View {
        NavigationView {
            List {
                ForEach(expenses.items) { item in
                    HStack {
                        VStack(alignment: .leading) {
                            Text(item.name)
                                .font(.headline)
                            Text(item.type)
                        }

                        Spacer()

                        Text(item.amount, format: .currency(code: "USD"))
                    }
                }
                .onDelete(perform: removeItems)
            }
            .navigationTitle("iExpense")
            .toolbar {
                Button {
                    showingAddExpense = true
                } label: {
                    Image(systemName: "plus")
                }
            }
            .sheet(isPresented: $showingAddExpense) {
                AddView(expenses: expenses)
            }
        }
    }

    func removeItems(at offsets: IndexSet) {
        expenses.items.remove(atOffsets: offsets)
    }
}

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

AddView:

import SwiftUI

struct AddView: View {
    @ObservedObject var expenses: Expenses
    @Environment(\.dismiss) var dismiss

    @State private var name = ""
    @State private var type = "Personal"
    @State private var amount = 0.0

    let types = ["Business", "Personal"]

    var body: some View {
        NavigationView {
            Form {
                TextField("Name", text: $name)

                Picker("Type", selection: $type) {
                    ForEach(types, id: \.self) {
                        Text($0)
                    }
                }

                TextField("Amount", value: $amount, format: .currency(code: "USD"))
                    .keyboardType(.decimalPad)
            }
            .navigationTitle("Add new expense")
            .toolbar {
                Button("Save") {
                    let item = ExpenseItem(name: name, type: type, amount: amount)
                    expenses.items.append(item)
                    dismiss()
                }
            }
        }
    }
}

struct AddView_Previews: PreviewProvider {
    static var previews: some View {
        AddView(expenses: Expenses())
    }
}

ExpenseItem:

import Foundation

struct ExpenseItem: Identifiable, Codable {
    var id = UUID()
    let name: String
    let type: String
    let amount: Double
}

Expenses:

import Foundation

class Expenses: ObservableObject {
    @Published var items = [ExpenseItem]() {
        didSet {
            if let encoded = try? JSONEncoder().encode(items) {
                UserDefaults.standard.set(encoded, forKey: "Items")
            }
        }
    }

    init() {
        if let savedItems = UserDefaults.standard.data(forKey: "Items") {
            if let decodedItems = try? JSONDecoder().decode([ExpenseItem].self, from: savedItems) {
                items = decodedItems
                return
            }
        }

        items = []
    }
}

It might be a bug in the latest version of Swift as of now. Help would be appreciated!

A fix would also be appreciated!

Stangely, the name and the type of the expense work.

Keep an eye out for any updates or patches released by Apple. It's possible that this issue might be resolved in a future update.

Turns out I just had to replace the "USD" currency code with the following:

Locale.current.currency?.identifier ?? "USD"

Thanks for the help!