you may have to control the size yourself. Something like this: var body: some View { GeometryReader { geom in ... .popover(isPresented: $showPersonEditor) { PersonEditor(chosenPerson: $chosenPerson) .environmentObject(document) .frame(width: geom.size.width/2, height: geom.size.height/2) } ... } ...

There is a "before" and "after" parameter that could be used, such as: @main struct TestApp: App { var body: some Scene { WindowGroup { ContentView() }.commands { CommandGroup(after: .pasteboard) { // in Edit Button(action: { // do something }) { Text("My_Menu_Item") } } } } }

you need a "NavigationView" for the "Alert" to show, for example: struct Alerts: View { var body: some View { NavigationView { // Text("Where is the Alert?") .alert(isPresented: .constant(true)) { Alert(title: Text("Hello"), message: Text("World")) } } } }

This is the full code I used on macos 11.4, xcode 12.5, target ios 14.5 and macCatalyst. Is this not working for you? import SwiftUI @main struct TestApp: App { var body: some Scene { WindowGroup { ContentView() } } } struct ContentView: View { var body: some View { Alerts() } } struct Alerts: View { var body: some View { NavigationView { Text("Where is the Alert?") .alert(isPresented: .constant(true)) { Alert(title: Text("Hello"), message: Text("World")) } } } } struct Alerts_Previews: PreviewProvider { static var previews: some View { Alerts() } }

what you are doing is resetting the "cart" to empty each time you call "Shop". Note, passing variables and etc... to another View is an important concept to master. Try this: struct ContentView: View { @ObservedObject var cart = Products() var body: some View { NavigationView { List { ForEach(cart.products) { product in Text("\(product.name) \(product.price)$") } } .navigationBarItems( trailing: NavigationLink(destination: Shop(cart: cart)) { // Text("Go Shop") }) .navigationBarTitle("Cart") }.navigationViewStyle(StackNavigationViewStyle()) } } struct Shop: View { @ObservedObject var cart:Products // var body: some View { VStack{ Button("Add Product To Cart") { cart.addProduct(product: Product(name: "Name", price: 399)) } } } }

You cannot "reverse" the bounds. You will have to use some very basic math to calculate the desired value. According to the docs, Slider takes a ClosedRange for the "in" parameter, and a ClosedRange is (https://docs.swift.org/swift-book/LanguageGuide/BasicOperators.html): "The closed range operator (a...b) defines a range that runs from a to b, and includes the values a and b. The value of a must not be greater than b."

just an observation, I would avoid the "!" in: selectedPenaltyLength = formatSeconds(gameState.penaltyLengths![0]) and use: init(gameState : GameState) { self.gameState = gameState selectedPenaltyLength = "" selectedPenaltyIndex = 0 separatePenaltyClock = false if let penalties = gameState.penaltyLengths, penalties.count 0 { selectedPenaltyLength = formatSeconds(penalties[0]) } }

The ".onDelete(...)" works on MacOS, iOS and MacCatalyst. Here is a very basic example, using MacOS 11.4, xcode 12.5, target ios 14.5, macCatalyst 11.3 and MacOS 11.4. You have to swipe your mouse right to left. import SwiftUI @main struct TestApp: App { var body: some Scene { WindowGroup { ContentView() } } } struct ContentView: View { @State var items = ["1","2","3"] private func deleteItems(offsets: IndexSet) { withAnimation { print("deleteItems") } } private func addItem() { withAnimation { print("addItem") } } var body: some View { List { ForEach(items, id: \.self) { item in Text("Item at \(item)") }.onDelete(perform: deleteItems) } .toolbar { Button(action: addItem) { Label("Add Item", systemImage: "plus") } } } }

your code as it is works well for me on macos 11.4, xcode 12.5, target ios 14.5 and macCatalyst 11.3.

it could be the line with the ".position(...)". Here it is mixing Int and CGFloat. Try this: .position(x: CGFloat(j) * w / 9.0 + w / 18.0, y: CGFloat(i) * h / 9.0 + h / 18.0)

try this: struct ContentView: View { var body: some View { Rectangle() .stroke(style: StrokeStyle(lineWidth: 2, dash: [5])) .foregroundColor(.red) .frame(width: 111, height: 111) } }

could you try this: struct ContentView: View { @State private var notedNumbers: [Int:[Int]] = [0:[1,2]] var body: some View { ForEach(Array(notedNumbers.keys.enumerated()), id: \.element) { _, key in let row = key / 9 let col = key % 9 if let notedNumbersKey = notedNumbers[key] { ForEach(notedNumbersKey.indices, id: \.self) { i in // Cannot ForEach the Int Array here, compiler cannot type check the expression. Text("---> \(i)") } } } } }

Since you don't ask a question here, nor provide sufficient code, I can only guess. For NavigationLink to work you need a NavigationView. There is no NavigationView in ContentView, maybe you have one in Home?

yes, if you read my comment carefully, I say in ContentView not ContentView_Previews. Try putting NavigationView in ContentView like @Claude31 answer.

try this: NavigationLink("world", destination: Text("world!")).listRowBackground(Color.green)