init(context: NSManagedObjectContext = PersistenceController.shared.container.viewContext) self.context = context fetchTasks() // Observe Core Data changes automatically (optional) NotificationCenter.default.publisher(for: .NSManagedObjectContextObjectsDidChange, object: context) .sink [weak self] _ in self?.fetchTasks() .store(in: &cancellables)
final class PersistenceController static let shared = PersistenceController()
func addTask(title: String, dueDate: Date? = nil) PersistenceController.shared.addTask(title: title, dueDate: dueDate)
// MARK: - CRUD wrappers
func deleteSelected() let toDelete = tasks.filter selection.contains($0.id ?? UUID()) toDelete.forEach PersistenceController.shared.delete($0) selection.removeAll()
var body: some View HStack Image(systemName: task.isCompleted ? "checkmark.circle.fill" : "circle") .foregroundColor(task.isCompleted ? .green : .secondary) .onTapGesture(perform: toggleAction)
struct AddTaskView: View @Environment(\.dismiss) private var dismiss @State private var title = "" @State private var dueDate: Date? = nil @State private var showDatePicker = false swift to-do list 11 crack
The PersistenceController is the single source of truth for the data layer. Episode 11 often adds a deleteAllCompleted() helper for bulk‑operations. import SwiftUI import Combine
func toggleCompletion(_ task: TaskItem) PersistenceController.shared.toggleCompletion(task)
Prepared for developers who are following a “Swift To‑Do List” tutorial series (episode 11) or who want a concise reference for the concepts covered in that stage of the project. | Episode | Core Goal | Typical New Feature Introduced | |---------|-----------|--------------------------------| | 1‑2 | Project scaffolding, UI basics | Simple list using UITableView / List | | 3‑5 | Data persistence basics | UserDefaults , Codable | | 6‑8 | Refactoring & MVVM | View‑model separation, bindings | | 9‑10 | Advanced UI/UX | Swipe actions, drag‑and‑drop reordering | | 11 | Full‑featured persistence & editing | Core Data integration, inline editing, and multi‑selection | init(context: NSManagedObjectContext = PersistenceController
VStack(alignment: .leading) Text(task.title ?? "") .strikethrough(task.isCompleted, color: .gray) if let due = task.dueDate Text("Due: \(due, formatter: dateFormatter)") .font(.caption) .foregroundColor(.secondary)
var body: some View NavigationStack Form Section(header: Text("Task")) TextField("Title", text: $title) Section Toggle("Set due date", isOn: Binding( get: showDatePicker , set: showDatePicker = $0; if !$0 dueDate = nil )) if showDatePicker DatePicker("Due", selection: Binding( get: dueDate ?? Date() , set: dueDate = $0 ), displayedComponents: .date) .navigationTitle("New Task") .toolbar ToolbarItem(placement: .cancellationAction) Button("Cancel") dismiss() ToolbarItem(placement: .confirmationAction) Button("Save") onSave(title, dueDate) dismiss() .disabled(title.trimmingCharacters(in: .whitespaces).isEmpty)
func markSelectedAsCompleted() tasks.filter selection.contains($0.id ?? UUID()) .forEach $0.isCompleted = true PersistenceController.shared.save() "checkmark
func delete(at offsets: IndexSet) offsets.map tasks[$0] .forEach PersistenceController.shared.delete($0)