---
title: "previewDevice(_:)"
framework: swiftui
role: symbol
role_heading: Instance Method
path: "swiftui/view/previewdevice(_:)"
---

# previewDevice(_:)

Overrides the device for a preview.

## Declaration

```swift
nonisolated func previewDevice(_ value: PreviewDevice?) -> some View

```

## Parameters

- `value`: A device to use for preview, or nil to let Xcode automatically choose a device based on the run destination.

## Return Value

Return Value A preview that uses the given device.

## Discussion

Discussion By default, Xcode automatically chooses a preview device based on your currently selected run destination. If you want to choose a device that doesn’t change based on Xcode settings, provide a PreviewDevice instance that you initialize with the name or model of a specific device: struct CircleImage_Previews: PreviewProvider {     static var previews: some View {         CircleImage()             .previewDevice(PreviewDevice(rawValue: "iPad Pro (11-inch)"))     } } You can get a list of supported preview device names, like “iPhone 11”, “iPad Pro (11-inch)”, and “Apple Watch Series 5 - 44mm”, by using the xcrun command in the Terminal app: % xcrun simctl list devicetypes Additionally, you can use the following values for macOS platform development: “Mac” “Mac Catalyst”

## See Also

### Customizing a preview

- [PreviewDevice](swiftui/previewdevice.md)
- [previewLayout(_:)](swiftui/view/previewlayout(_:).md)
- [previewInterfaceOrientation(_:)](swiftui/view/previewinterfaceorientation(_:).md)
- [InterfaceOrientation](swiftui/interfaceorientation.md)