new in swiftui

At WWDC 2024, several new features and enhancements were introduced for SwiftUI. Here are some of the highlights:

1. Graphics Capabilities: SwiftUI now allows for more advanced graphics, including a new mix modifier on colors that lets you blend colors together. Custom shaders can now be precompiled to avoid frame drops caused by lazy shader compilation.

2. Scrolling Enhancements: There are new APIs for scroll views, allowing for more control over scroll positions and the ability to detect when a view's visibility changes due to scrolling. This can be used to create experiences like auto-playing videos when content moves on or off the screen.

3. Swift 6 Language Mode: SwiftUI has improved its APIs to make it easier to adopt the new Swift 6 language mode, which includes compile-time data race safety. Views in SwiftUI are now marked with the main actor annotation, meaning they are isolated to the main actor by default.

4. Interoperability: Significant improvements have been made to the integration of gestures and animations between SwiftUI and other frameworks like UIKit and AppKit. You can now use gesture recognizers and animations across these frameworks seamlessly.

5. Text and Selection Management: SwiftUI now offers programmatic access to text selection within text editing controls, allowing for features like showing suggested rhymes for selected words.

6. Custom Containers and Mesh Gradients: New features like custom containers and mesh gradients have been introduced, providing more flexibility in UI design.

For more detailed information, you can refer to the session What’s new in SwiftUI (16:18) which covers scrolling enhancements and other new features.