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An iOS Developer's Guide to SwiftUI

An iOS Developer's Guide to SwiftUI

By : Michele Fadda
4.9 (12)
Buy this Book
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An iOS Developer's Guide to SwiftUI

An iOS Developer's Guide to SwiftUI

4.9 (12)
By: Michele Fadda
Buy this Book

Overview of this book

– SwiftUI transforms Apple Platform app development with intuitive Swift code for seamless UI design. – Explore SwiftUI's declarative programming: define what the app should look like and do, while the OS handles the heavy lifting. – Hands-on approach covers SwiftUI fundamentals and often-omitted parts in introductory guides. – Progress from creating views and modifiers to intricate, responsive UIs and advanced techniques for complex apps. – Focus on new features in asynchronous programming and architecture patterns for efficient, modern app design. – Learn UIKit and SwiftUI integration, plus how to run tests for SwiftUI applications. – Gain confidence to harness SwiftUI's full potential for building professional-grade apps across Apple devices.
Table of Contents (25 chapters)
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Preface
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Preface
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Who this book is for
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What this book covers
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To get the most out of this book
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Download the example code files
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Conventions used
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Get in touch
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Share Your Thoughts
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Download a free PDF copy of this book
Lock Free Chapter
1
Part 1: Simple Views
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Part 1: Simple Views
2
Chapter 1: Exploring the Environment – Xcode, Playgrounds, and SwiftUI
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Chapter 1: Exploring the Environment – Xcode, Playgrounds, and SwiftUI
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Technical requirements
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Exploring SwiftUI with Xcode
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Your first SwiftUI project
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Previews and the simulator
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Playgrounds
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The app submission process
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Summary
3
Chapter 2: Adding Basic UI Elements and Designing Layouts
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Chapter 2: Adding Basic UI Elements and Designing Layouts
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Technical requirements
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Reusing views code
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Managing space in SwiftUI
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Digging deeper into stacks
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Summary
4
Chapter 3: Adding Interactivity to a SwiftUI View
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Chapter 3: Adding Interactivity to a SwiftUI View
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Technical requirements
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Passing values at view creation
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Responding to a button tap
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Property wrappers
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Bidirectional binding with Picker
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Final notes on Subviews and @Binding, Classes, and @ObservableObject
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Summary
5
Part 2: Scrollable Views
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Part 2: Scrollable Views
6
Chapter 4: Iterating Views, Scroll Views, FocusState, Lists, and Scroll View Reader
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Chapter 4: Iterating Views, Scroll Views, FocusState, Lists, and Scroll View Reader
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Technical requirements
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Iterating views
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Hiding or showing the keyboard in a form using @FocusState
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Controlling scrolling programmatically using ScrollViewReader
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Summary
7
Chapter 5: The Art of Displaying Grids
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Chapter 5: The Art of Displaying Grids
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Technical requirements
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Displaying grids in iOS
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The Grid view
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Lazy grids
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Reacting to device rotation
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Summary
8
Part 3: SwiftUI Navigation
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Part 3: SwiftUI Navigation
9
Chapter 6: Tab Bars and Modal View Presentation
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Chapter 6: Tab Bars and Modal View Presentation
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Technical requirements
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Creating a standard tab bar
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Creating custom tab bars
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The hitchhiker’s guide to modal navigation
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Summary
10
Chapter 7: All About Navigation
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Chapter 7: All About Navigation
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Technical requirements
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Navigation as a concept in iOS and other platforms
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Showing a tab bar title with NavigationView
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Presenting views with NavigationLink (pre-iOS 16)
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Adding buttons to NavigationView and activating navigation programmatically
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Using navigationDestination with NavigationStack
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Using NavigationPath to control the navigation stack
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NavigationSplitView – multicolumn navigation
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Direct navigation stack manipulation with NavigationPath
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Saving and loading the navigation stack
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Summary
11
Part 4: Graphics and Animation
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Part 4: Graphics and Animation
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Chapter 8: Creating Custom Graphics
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Chapter 8: Creating Custom Graphics
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Technical requirements
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Creating custom modifiers
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Drawing with the Canvas
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Using CALayers in SwiftUI
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Custom layout
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Summary
13
Chapter 9: An Introduction to Animations in SwiftUI
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Chapter 9: An Introduction to Animations in SwiftUI
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Technical requirements
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Gestures
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Creating implicit animations
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Transitions
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Summary
14
Part 5: App Architecture
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Part 5: App Architecture
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Chapter 10: App Architecture and SwiftUI Part I: Practical Tools
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Chapter 10: App Architecture and SwiftUI Part I: Practical Tools
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Diagrams
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Dependency inversion
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Clean Architecture
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Different ways to decouple
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A matter of state
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iOS 17 changes in state management
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Summary
16
Chapter 11: App Architecture and SwiftUI Part II – the Theory
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Chapter 11: App Architecture and SwiftUI Part II – the Theory
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Keeping it light enough
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Conflict and the role of the architect
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What good software architecture is and what it is not
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Don’t be shy; ask an expert!
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The origin of software patterns
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Agency theory and bad architecture
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Clean Architecture
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TCA, The Composable Architecture
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Summary
17
Part 6: Beyond Basics
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Part 6: Beyond Basics
18
Chapter 12: Persistence with Core Data
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Chapter 12: Persistence with Core Data
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What is persistency?
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What is Core Data?
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Understanding Core Data framework classes
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Using Core Data with SwiftUI
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Creating a Core Data project
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Core Data migrations
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The SQLite data file
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CloudKit
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Summary
19
Chapter 13: Modern Structured Concurrency
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Chapter 13: Modern Structured Concurrency
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A brief introduction to concurrency
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Understanding traditional concurrency mechanisms
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What is structured concurrency?
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Using the async/await syntax
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Understanding tasks
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Asynchronous streams
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Actors
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MainActor
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Bridging old GCD and structured concurrency
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Summary
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Chapter 14: An Introduction to SwiftData
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Chapter 14: An Introduction to SwiftData
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Technical requirements
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Understanding the differences between SwiftData and Core Data
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SwiftData and SwiftUI
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Exploring changes in the binding mechanisms
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Creating a data model
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Understanding relationships in SwiftData
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Fetching data
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Filtering data with predicates
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Summary
21
Chapter 15: Consuming REST Services in SwiftUI
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Chapter 15: Consuming REST Services in SwiftUI
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Technical requirements
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An overview of REST
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Understanding REST requests in Swift
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Codable, Encodable, and Decodable protocols
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Using URLSession
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URLProtocol
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Summary
22
Chapter 16: Exploring the Apple Vision Pro
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Chapter 16: Exploring the Apple Vision Pro
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Technical requirements
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Tools for visionOS development
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An overview of Unity and RealityKit
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First steps with visionOS development
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Summary
23
Index
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Index
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Why subscribe?
24
Other Books You May Enjoy
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Other Books You May Enjoy
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Packt is searching for authors like you
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Share Your Thoughts
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Download a free PDF copy of this book

NavigationSplitView – multicolumn navigation

NavigationSplitView is a view that presents views in two or three columns, where selections in leading columns control presentations in subsequent columns.

On large-screen devices, such as iPad and Mac, NavigationSplitView will represent detail-view navigation on multiple columns to better exploit large screens but will automatically default to a normal navigation stack when the screen width is compact (normal iPhone width in vertical format).

The simplest multicolumn view you can obtain in this way is simply a two-column static view, like in the following code fragment, which would work on an iPad:

struct ContentView: View {
    var body: some View {
        NavigationStack{
            NavigationSplitView {
                ...
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An iOS Developer's Guide to SwiftUI
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