SwiftUI How can dertine what device I am running

UIDevice.current.userInterfaceIdiom == .pad means an iPad, .phone means an iPhone. You can use UIDevice.current.systemName to get the operating system in use. See here.

Just use UIDevice.current.localizedModel

    var body: some View {
        HStack {
             Text("Device Type: ")
             Text(UIDevice.current.localizedModel)
        }
    }

It’s hard to answer this without more context. Why do you need this info? What decisions do you plan to make based on it?

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Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@" + "apple.com"

Hi Quinn,

As a diabetic, I am trying to develop an App that will help monitor my Blood Glucose and compare it with my food intake, and my physical activity. I am using SwiftData and Cloudkit to share the data across all my devices. I want the App to have a background Image and a logo. and the View Controllers work differently on a Mac than on an iPad/iPhone.

the View Controllers work differently on a Mac than on an iPad/iPhone.

In that case userInterfaceIdiom is definitely the good option.

Earlier you wrote:

and UIDevice is part of UIKit which won't work on macOS. I think I need a SwiftUI solution.

SwiftUI is a UI framework. While it works on all Apple’s platforms, it doesn’t do everything. Sometimes you need to work with platform-specific APIs.

In this case it depends on how you’re building your macOS app:

• If you’re running your iOS app unmodified (iOS Apps on Mac), there’s the isiOSAppOnMac property on ProcessInfo.

• If you’re using Mac Catalyst, userInterfaceIdiom is the answer.

• If you’re building a cross platform app, you don’t have access to UIDevice in your macOS build but that’s OK because the macOS build only runs on macOS. So, you can use a compile-time check, for example:

let isBuiltForMacOS: Bool = {
    #if os(macOS)
        return true
    #else
        return false
    #endif
}()

Share and Enjoy
—
Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@" + "apple.com"