This is an interesting issue I am having with a custom app I am making in Xcode using SwiftUI.
I have a Swift file called BillView. In this file, I have some code that displays data retrieved from the CoreData Stack in a List. The issue I am having is when I add a new record, the List reflects that there is an additional row but it has the same displayed text as the one above it. If I continue to add records, they all show the same text as the first row. I have gone through the code and banged my head against the wall until it now hurts. Can someone please help me discover why each row isn't showing its unique data? I have attached the code from the BillView Swift file below.
//
// BillView.swift
// Budget Me
//
// Created by Charles Vincent on 8/3/22.
//
import SwiftUI
import CoreData
struct BillRow: View {
var bill: Bill
var body: some View {
Text(bill.merchant ?? "No merchant given")
}
}
struct BillView: View {
@Environment(\.managedObjectContext) private var viewContext
@FetchRequest(
entity: Bill.entity(),
sortDescriptors: [NSSortDescriptor(keyPath: \Bill.date, ascending: true)],
animation: .default)
private var bills: FetchedResults<Bill>
@State var linkActive = false
var body: some View {
NavigationView {
List {
ForEach(bills){ bill in
BillRow(bill: bill)
}
.onDelete(perform: deleteBills)
}
.navigationTitle("Bills")
.background(
NavigationLink(destination: AddBillView(), isActive: $linkActive) {}
)
.toolbar {
ToolbarItem(placement: .automatic) {
Button(action: {
linkActive = true
}) {
Image(systemName: "plus")
}
}
}
}
}
private func deleteBills(offsets: IndexSet) {
withAnimation {
offsets.map { bills[$0] }.forEach(viewContext.delete)
do {
try viewContext.save()
} catch {
// Replace this implementation with code to handle the error appropriately.
// fatalError() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development.
let nsError = error as NSError
fatalError("Unresolved error \(nsError), \(nsError.userInfo)")
}
}
}
}
struct BillView_Previews: PreviewProvider {
static var previews: some View {
BillView()
}
}
