Book Image

An iOS Developer's Guide to SwiftUI

By : Michele Fadda
Book Image

An iOS Developer's Guide to SwiftUI

By: Michele Fadda

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)
Free Chapter
1
Part 1: Simple Views
5
Part 2: Scrollable Views
8
Part 3: SwiftUI Navigation
11
Part 4: Graphics and Animation
14
Part 5: App Architecture
17
Part 6: Beyond Basics

Presenting views with NavigationLink (pre-iOS 16)

NavigationView is a container that wraps the contents of various views, preparing them for navigation. NavigationLink performs the task of designating which content to navigate to and providing the user with a UI component to initiate the navigation process.

NavigationLink in SwiftUI allows pushing a new destination view. You can use NavigationLink in a list or decide to push a view programmatically. The latter enables you to trigger a new screen from a different location in your view.

In this case, the user needs to tap on the link.

The next code example illustrates using NavigationLink to push a simple Text view on the stack:

import SwiftUI
struct ContentView: View {
    fileprivate func Destination() -> Text {
        return Text("This is the destination View")
    }
    var body: some View {
  &...