---
title: "init(_:)"
framework: swiftui
role: symbol
role_heading: Initializer
path: "swiftui/userinterfacesizeclass/init(_:)"
---

# init(_:)

Creates a SwiftUI size class from the specified UIKit size class.

## Declaration

```swift
init?(_ uiUserInterfaceSizeClass: UIUserInterfaceSizeClass)
```