In visionOS, how do I dynamically set the size of the window?
Generated on 3/6/2025
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To dynamically set the size of a window in visionOS, you can use the window resizability modifier in SwiftUI. This allows the window to resize based on the content it contains. For example, if you have a window that needs to adjust its size according to the content, you can apply this modifier to ensure the window resizes appropriately when the content changes.
Additionally, you can use the default window placement modifier to set the initial position and size of a window programmatically. This can be useful for customizing how and where a window appears when it first opens.
For more detailed guidance, you can refer to the session Work with windows in SwiftUI (09:43) which covers window sizing in visionOS.

Work with windows in SwiftUI
Learn how to create great single and multi-window apps in visionOS, macOS, and iPadOS. Discover tools that let you programmatically open and close windows, adjust position and size, and even replace one window with another. We’ll also explore design principles for windows that help people use your app within their workflows.

Design great visionOS apps
Find out how to create compelling spatial computing apps by embracing immersion, designing for eyes and hands, and taking advantage of depth, scale, and space. We’ll share several examples of great visionOS apps and explore how their designers approached creating new experiences for the platform.

Design interactive experiences for visionOS
Learn how you can design a compelling interactive narrative experience for Apple Vision Pro from the designers of Encounter Dinosaurs. Discover how these types of experiences differ from existing apps, media, and games, and explore how to design narratives that bring audiences into new worlds. Find out how you can create stories that adapt to any space and size, provide multiple levels of interaction to make them accessible to all, and use animation, spatial audio, and custom gestures to further immerse people in your experience.

Dive deep into volumes and immersive spaces
Discover powerful new ways to customize volumes and immersive spaces in visionOS. Learn to fine-tune how volumes resize and respond to people moving around them. Make volumes and immersive spaces interact through the power of coordinate conversions. Find out how to make your app react when people adjust immersion with the Digital Crown, and use a surrounding effect to dynamically customize the passthrough tint in your immersive space experience.

Get started with HealthKit in visionOS
Discover how to use HealthKit to create experiences that take full advantage of the spatial canvas. Learn the capabilities of HealthKit on the platform, find out how to bring an existing iPadOS app to visionOS, and explore the special considerations governing HealthKit during a Guest User session. You’ll also learn ways to use SwiftUI, Swift Charts, and Swift concurrency to craft innovative experiences with HealthKit.

Bring your iOS or iPadOS game to visionOS
Discover how to transform your iOS or iPadOS game into a uniquely visionOS experience. Increase the immersion (and fun factor!) with a 3D frame or an immersive background. And invite players further into your world by adding depth to the window with stereoscopy or head tracking.

What’s new in AppKit
Discover the latest advances in Mac app development. Get an overview of the new features in macOS Sequoia, and how to adopt them in your app. Explore new ways to integrate your existing code with SwiftUI. Learn about the improvements made to numerous AppKit controls, like toolbars, menus, text input, and more.

Platforms State of the Union
Discover the newest advancements on Apple platforms.

Tailor macOS windows with SwiftUI
Make your windows feel tailor-made for macOS. Fine-tune your app’s windows for focused purposes, ease of use, and to express functionality. Use SwiftUI to style window toolbars and backgrounds. Arrange your windows with precision, and make smart decisions about restoration and minimization.