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Developer Tools Support / PreviewLayout / PreviewLayout.sizeThatFits

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Declaration
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PreviewLayout.sizeThatFits

Fit the container to the size of the preview when offered the size of the device that the preview is running on.

Declaration

case sizeThatFits

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Getting a layout

PreviewLayout.device
PreviewLayout.fixed(width:height:)
PreviewLayout.fixed3D(width:height:depth:)

Open on developer.apple.com

Developer Tools SupportCase

iOS 13.0+iPadOS 13.0+Mac Catalyst 13.0+macOS 10.15+tvOS 13.0+visionOS 1.0+watchOS 6.0+

Declaration
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Built on 2026-05-07