Integrating SwiftUI into UIKit Apps
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  • Table of contents
  • Introduction
  • 1.SwiftUI essentials
  • 1.1Views and scenes
  • 1.2State and view updates
  • 1.3Data management
  • 1.4Environment
  • 1.5View modifiers
  • 1.6Layout
  • 1.7Accessibility
  • 1.8Previews in Xcode
  • 2.SwiftUI in a separate view controller
  • 2.1Presenting UIHostingController programmatically
  • 2.2Setting up Hosting Controller in storyboards
  • 2.3Subclassing UIHostingController
  • 3.SwiftUI in an embedded view
  • 3.1Programmatically embedding a SwiftUI view
  • 3.2Adding a SwiftUI view in storyboards
  • 4.SwiftUI in collection view cells
  • 4.1Creating custom cells using UIHostingConfiguration
  • 4.2Styling collection cells in SwiftUI
  • 4.3Managing cell interactions
  • 5.SwiftUI in widgets
  • 5.1Setting up a widget extension
  • 5.2Supporting multiple widget sizes
  • 5.3Adding Lock Screen widgets
  • 6.Advanced SwiftUI integration
  • 6.1Passing values to SwiftUI with UITraits
  • 6.2Using SwiftUI animations to animate UIKit views
  • 7.UIKit in SwiftUI
  • 7.1Migrating from UIKit to the SwiftUI app lifecycle
  • 7.2Embedding a UIView into SwiftUI
  • 7.3Wrapping a UIViewController into a SwiftUI view

Migrating from UIKit to the SwiftUI app lifecycle

In this subchapter, we’ll transition a UIKit app to SwiftUI to improve iPad support, adding responsive layouts, multitasking, and data sharing across scenes.

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