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  • Book Overview & Buying An iOS Developer's Guide to SwiftUI
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An iOS Developer's Guide to SwiftUI

An iOS Developer's Guide to SwiftUI

By : Michele Fadda
4.9 (11)
Buy this Book
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An iOS Developer's Guide to SwiftUI

An iOS Developer's Guide to SwiftUI

4.9 (11)
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
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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
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Index
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Index
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Why subscribe?
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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

Adding buttons to NavigationView and activating navigation programmatically

As in UIKit, it is possible to add custom buttons to NavigationView. This is achieved by using the .toolbar modifier and placing a ToolbarItem inside it.

If you don’t specify the placement, for left-to-right languages, the default placement of .ToolbarItem will be positioned on the right, and it will switch to the left for right-to-left languages.

Typically, you will add a Button to ToolbarItem. But if you are on iOS 16, NavigationView can be substituted with NavigationStack, without changing anything else.

The following code example illustrates how to add buttons to a NavigationView, specifying the placement explicitly in both cases:

import SwiftUI
struct ContentView: View {
    var body: some View {
        NavigationView {
            Text("Example of adding tabbaritems...
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An iOS Developer's Guide to SwiftUI
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