What’s new in SwiftUI for iOS 18?

In iOS 18, SwiftUI introduces several new features and improvements. Here are some of the highlights:

1. Graphics Capabilities:

   • New mix modifier on color to blend colors.
   • Extended custom shader feature with precompilation to avoid frame drops.

2. Scroll View Enhancements:

   • Fine-grained control over scroll views with onScrollGeometryChange.
   • Detecting view visibility changes due to scrolling.
   • More programmatic control over scroll positions and content alignment.

3. Accessibility:

   • Improved APIs for adding accessibility information without overriding default labels.
   • New accessibility features like conditional modifier support and app intent-based actions.

4. Xcode Previews:

   • New dynamic linking architecture for faster iteration.
   • Easier setup with the previewable macro to use state directly in previews.

5. Text Management:

   • Programmatic access to and control of text selection within text editing controls.

6. Swift 6 Language Mode:

   • Compile-time data race safety.
   • Views in SwiftUI are now implicitly isolated to the main actor by default.

7. Interoperability:

   • Gesture recognition and animations can now be shared between UIKit and SwiftUI.

For a detailed overview, you can watch the session What’s new in SwiftUI.