Author: Answertopia

  • SwiftUI Architecture

    A completed SwiftUI app is constructed from multiple components that are assembled hierarchically. Before embarking on creating even the most basic SwiftUI projects, it is helpful to understand how SwiftUI apps are structured. With this goal in mind, this chapter will introduce the key elements of SwiftUI app architecture, emphasizing App, Scene, and View elements.…

  • Using Xcode 15 in SwiftUI Mode

    When creating a new project, Xcode now provides a choice of creating either a Storyboard or SwiftUI-based user interface for the project. When creating a SwiftUI project, Xcode appears and behaves significantly differently when designing an app project’s user interface than the UIKit Storyboard mode. When working in SwiftUI mode, most of your time as…

  • An Overview of SwiftUI

    Now that Xcode has been installed and the basics of the Swift programming language are covered, it is time to start introducing SwiftUI. First announced at Apple’s Worldwide Developer Conference in 2019, SwiftUI is an entirely new approach to developing apps for all Apple operating system platforms. The primary goals of SwiftUI are to make…

  • An Introduction to Swift Property Wrappers

    Now that the topics of Swift classes and structures have been covered, this chapter will introduce a related topic in the form of property wrappers. Introduced in Swift 5.1, property wrappers provide a way to reduce the amount of duplicated code involved in writing getters, setters and computed properties in class and structure implementations. Understanding…

  • An Introduction to Swift Structures and Enumerations

    Having covered Swift classes in the preceding chapters, this chapter will introduce the use of structures in Swift. Although at first glance structures and classes look similar, there are some important differences that need to be understood when deciding which to use. This chapter will outline how to declare and use structures, explore the differences…

  • iOS 17 App Development Essentials