SwiftUI 布局

SwiftUI's layout capabilities have been significantly enhanced, especially with the introduction of spatial layout features. At WWDC, Apple introduced new tools for building 3D experiences using SwiftUI, particularly on VisionOS. These tools allow developers to extend existing 2D layout concepts into 3D, enabling the creation of more immersive and interactive applications.

Key Features of SwiftUI Spatial Layout

1. 3D Views: SwiftUI now supports 3D views, allowing developers to use familiar 2D layout tools to build 3D applications. This includes support for animations, resizing, and state management in a 3D context. Meet SwiftUI spatial layout

2. Depth Alignments: New depth-based variants of modifiers allow for volumetric layouts directly in SwiftUI. This includes depth alignments and layout-aware rotations, which help in creating rich 3D layouts. Meet SwiftUI spatial layout

3. Rotation Layout: The rotation 3D layout modifier supports rotations on any angle and axis, enabling dynamic and visually appealing arrangements. Meet SwiftUI spatial layout

4. Spatial Containers: These allow for overlapping content in the same 3D space, providing more flexibility in how content is displayed and interacted with. Meet SwiftUI spatial layout

These enhancements make SwiftUI a powerful tool for creating 3D applications, especially when combined with RealityKit for more complex behaviors. If you're interested in learning more about these features, I recommend watching the session "Meet SwiftUI spatial layout" from WWDC 2025.