Using Core Data with SwiftUI

SwiftUI offers several basic mechanisms to interact with Core Data that are easier to use than UIKit.

The @FetchRequest property wrapper allows you to fetch entities from Core Data directly inside your SwiftUI views. It automatically observes the Core Data context, so it will update the view if the data changes.

You can use the @Environment property wrapper to inject NSManagedObjectContext into your SwiftUI view. This is useful for operations such as adding, deleting, or modifying entities.

For more complex scenarios where you want to encapsulate Core Data logic in separate layers, you can use either the @ObservableObject or @StateObject property wrapper, depending on your needs. This approach works well for views that require observing not just Core Data changes but also other types of state or data flow. This is how you can integrate, for instance, NSFetchedResultsController; this is a good choice if you are dealing with a large volume of data...