what's new in UI

At WWDC 2024, Apple introduced several new features and improvements in UI, particularly focusing on UIKit and SwiftUI.

UIKit Enhancements

• Document Launch Experience: Redesigned for document-based apps to showcase their distinctive identity with full control over launch views and support for template document creation.
• Tabs and Sidebar: Major updates include a new combined sidebar experience and customization features, allowing users to personalize the sidebar and tab bar through drag and drop. The new UI Tab and UI Tab group APIs help build a tab bar and sidebar that adapt for a native experience on both Mac Catalyst and visionOS.
• Fluid Transitions: Introduction of a new zoom transition that is continuously interactive, enhancing the sense of continuity in apps.
• UI Update Link: A new feature in iOS 18 that simplifies implementing complex animations requiring periodic UI updates, offering better performance and battery efficiency.
• Apple Pencil Pro Integration: New support for Apple Pencil Pro, including a squeeze gesture for tool switching and an undo slider for quick access to undo history.

SwiftUI Enhancements

• New Tab View: Enhancements to make apps feel brand new with a more flexible sidebar.
• Mesh Gradients and Snappy Controls: New visual features to enhance the appearance of apps.
• Scrolling Enhancements: New APIs for fine-grained control over scroll views, allowing for better integration with the state of a scroll view and detection of view visibility changes due to scrolling.
• Improved Interoperability: Enhanced interoperability between SwiftUI and UIKit, allowing for the use of SwiftUI animation types to animate UIKit views.

For more detailed information, you can refer to the sessions:

• What’s new in UIKit
• What’s new in SwiftUI