I have SwiftUI views, which access the user defaults by using the property wrapper @AppStorage. Now I would like to have a preview with multiple variations of the view depending on the same user default with different values. Is there a pure way to do that? Currently I have a solution which is very probably a hack and supports only one variation of the user default. To do that I define the user settings in a sub views onAppear() method: struct MyTestedView_Previews : PreviewProvider { static var previews: some View { VStack { VStack { MyTestedView .previewLayout(.sizeThatFits) } .onAppear{ UserDefaults.standard.set(true, forKey: "myConsumedKey") } //VStack //{ // MyTestedView // .previewLayout(.sizeThatFits) //} //.onAppear{ // UserDefaults.standard.set(false, forKey: "myConsumedKey") //} } } } When I have two VStack for different variations and I set the user defaults to different values in their onAppear(), only one user default value wins and I see one variation of my view twice. What I also don't like on my solution, is that I don't know where this user default is stored. Is it stored temporary in the memory or do I even manipulate Xcode's user defaults? Does anybody know if SwiftUI has already a solution to test different variations of user defaults in the preview?