whats new about grid views in swiftui?

In the latest updates to SwiftUI, there are several enhancements related to grid views:

1. Lazy Grids: You can now create lazy grids, such as LazyVGrid, which allows for efficient scrolling and dynamic content layout. For example, you can set up a grid with multiple columns and flexible sizing, and SwiftUI will handle the layout calculations for you. This is particularly useful for creating complex, scrollable layouts with minimal code.

   • Example: Setting up a lazy vertical grid with four columns and 40-point spacing, and using the aspect ratio modifier to manage item sizes.

2. Searchable Modifier: You can make grid content searchable by adding a state property to the view and using the searchable modifier. This allows users to filter the content dynamically as they type in the search term.

   • Example: Adding a searchable modifier to a grid view to filter content based on user input.

3. Custom Containers: SwiftUI now supports more flexible composition in custom containers, allowing for more creative and dynamic layouts. This includes the ability to create sections within grids, similar to how lists can be sectioned.

   • Example: Using a Section view within a custom container to organize grid content into sections.

4. Scrolling Enhancements: There are new APIs for fine-grained control over scroll views, including 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 they come into view.

   • Example: Using onScrollGeometryChange to react to changes in content offsets and sizes.

For more detailed information, you can refer to the following sessions from WWDC 2024:

• What’s new in SwiftUI (16:18)
• Migrate your TVML app to SwiftUI (11:54)
• Demystify SwiftUI containers (10:42)

These sessions cover the new capabilities and enhancements in SwiftUI, including grid views and other layout improvements.