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swiftuipreview

PreviewDevice not showing up in preview

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
            .previewDevice(PreviewDevice(rawValue: "iPhone 11"))
    }
}

However, the device is not shown in the preview. I ran "xcrun simctl list devicetypes" in terminal which does show the simulator. Is this normal behavior or am I missing something. The goal is that I want to show how the app looks with the iPhone resolution. I am using xCode 13.

enter image description here

Solution

  • I have meet same issue at Xcode Version 14.1 (14B47b).

    In my case ,this is because an unavailable simulator model has been selected like "iPhone 11",Xcode automatically chooses a available preview device based on your currently selected run destination.

    Like this:

    (selected iPhone SE2 but automatically chooses iPhone14 Pro) enter image description here

    Press control and option, click previewDevice, and then select an available model in the inspector can fix it：

    (iPhone 14 selected, preview shows as expected) enter image description here

    If there is no model you want in these options, you can add it in the menu Window -> Devices and Simulators first.

    Hope this helps you.