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This chapter will demonstrate how to use SwiftData by creating an example app project. The project will demonstrate how to declare models, create a model container, access the model context, add and delete data entries, establish relationships, and perform database searches. About the SwiftData Project The project will consist of a rudimentary visitor logging app…

The preceding chapters covered database storage using Core Data. While Core Data is a powerful and flexible solution to data storage, it was created long before the introduction of SwiftUI and lacks the simplicity of SwiftUI’s approach to app development. Introduced in iOS 17, SwiftData addresses this shortcoming by providing a declarative approach to persistent…

Using the CoreDataDemo project created in the chapter entitled A SwiftUI Core Data Tutorial, this chapter will demonstrate how to add CloudKit support to an Xcode project and migrate from Core Data to CloudKit-based storage. This chapter assumes that you have read the chapter entitled An Introduction to Core Data and SwiftUI. Enabling CloudKit Support…

CloudKit provides a way for apps to store cloud-based databases using iCloud storage so that it is accessible across multiple devices, users, and apps. Although initially provided with a dedicated framework that allows code to be written to directly create, manage and access iCloud-based databases, the recommended approach is now to use CloudKit in conjunction…

Now that we have explored the concepts of Core Data, it is time to put that knowledge to use by creating an example app project. In this project tutorial, we will create a simple inventory app that uses Core Data to persistently store the names and quantities of products. This will include the ability to…

A common requirement when developing iOS apps is to store data in some form of structured database. One option is to directly manage data using an embedded database system such as SQLite. While this is a perfectly good approach for working with SQLite in many cases, it does require knowledge of SQL and can lead…

The previous chapter introduced LazyHGrid, LazyVGrid, and GridItem views and explored how they can be used to create scrollable multicolumn layouts. While these views can handle large numbers of rows, they lack flexibility, particularly in grid cell arrangement and positioning. In this chapter, we will work with two grid layout views (Grid and GridRow) that…

The previous chapter introduced us to the SwiftUI NavigationSplitView component and described how multicolumn navigation is implemented and configured. This chapter will take what we have learned about NavigationSplitView and use it to create an example iOS app project. About the Project This tutorial will create the three-column split navigation app illustrated in the previous…

The NavigationStack and NavigationLink views outlined in the previous chapters are ideal for adding navigation when each destination view needs to fill the entire device screen. While this is generally the preferred navigation paradigm when working on most iOS devices, it doesn’t take advantage of larger display configurations available on the iPad or the iPhone…

Structured concurrency in Swift provides a powerful platform for performing multiple tasks at the same time, greatly increasing app performance and responsiveness. One of the downsides of concurrency is that it can lead to problems when multiple tasks access the same data concurrently, and that access includes a mix of reading and writing operations. This…