![]() ![]() You can access each reference easily via its identifier. items: A dictionary holding a reference to each TodoItem. ![]() Each view accesses the object by declaring a property with the same type using the property wrapper. SwiftUI then uses this publisher to reflect the state in the UI.ĪppMain.swift injects the TodoList.sampleData() instance into the view hierarchy via environmentObject(_:). The class itself conforms to ObservableObject, causing it to expose published events when properties change. Open TodoList.swift in the Models group and look at what’s happening inside. This is the object that manages the collection of TodoItems the user sees and interacts with. Look through Drag Todo’s code and you’ll notice a class called TodoList. You’ll also use two modifiers, onDelete(perform:) and onMove(perform:), that only work with a ForEach view and not the List view. Why use a ForEach inside a List? Not only does it give you more flexibility, but the editing features you’ll use in this tutorial require it. Open ActiveTodoView.swift and you’ll see it contains header and footer views surrounding a ForEach loop. The first section of the List is ActiveTodoView. ![]() The app displays the TODO items within a List view. You’ll see a NavigationView containing a VStack at the top level of the app. Open ContentView.swift in the Views group to examine its structure. The app stores the TODO items in an array and doesn’t persist data.ĬontentView is the main screen of Drag Todo. Each item shows a circle you can tap to toggle the completion status. You’ll add new items with the Plus button at the top trailing edge of the app. For this tutorial, the app starts with several pre-loaded TODO items, each consisting of a unique ID (not displayed), name, due date and completion status. ![]() Use the Download Materials button at the top or bottom of this tutorial to download the starter project.īuild and run the Xcode project in the starter directory. New to SwiftUI? Start with SwiftUI: Getting Started, read the developer documentation for List and ForEach, then come back here. Note: This tutorial assumes you are familiar with the basics of SwiftUI List and ForEach views. ![]()
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