SwiftUI List performance

I have a view where the user can configure which train lines are shown on a map. I'm having an issue where the list row background is ignored for all of the cells which are selected. Here is code that I am using: struct MapConfigurator: View { @Binding var routes: Set<Route> var body: some View { List(selection: $routes) { Section(header: Text(Show)) { ForEach(Route.allCases, id: .self) { route in Text(route.name) .foregroundColor(route.textColor) .listRowBackground(route.color) .tag(route) } } } .navigationBarTitle(Configure Map) .listStyle(GroupedListStyle()) .environment(.editMode, .constant(.active)) } } struct MapConfigurator_Previews: PreviewProvider { static var previews: some View { NavigationView { MapConfigurator(routes: .constant([.red, .green, .blue])) } } }

I have a SwiftUI app with a List displaying an array of model objects. When the user taps a list item we see its detail view. I want to add previous and next buttons to my detail view, but I'm not sure what needs to happen when previous/next are tapped. (see code below for what I'm looking to do) My first thought is to make the model variable in the DetailView be a binding, but I'm not sure how this would tie in with the NavigationLink 'stuff' any/all suggestions appreciated. thanks! class Model: Identifiable { var modelValue: Int init(modelValue: Int) { self.modelValue = modelValue } static let testData = [Model(modelValue: 3), Model(modelValue: 7), Model(modelValue: 31)] } class ModelManager { static let shared = ModelManager() let modelList = Model.testData func previous(for model: Model) - Model? { if let index = modelList.firstIndex(where: {$0.modelValue == model.modelValue}) { if index 0 { return modelList[index - 1] } } return nil } func next(for model: Model) - Model? { if l

I created a List for a settings menu with two sections where you can reorder/add/remove a set of pages. It should work similar to Apple's Today Widget editing menu where you can add and reorder items.Connector class code snippet:class SettingsConnector: ObservableObject { enum DetailsPage { case page1 case page2 case page3 func printed() -> String { switch self { case .page1: return Page 1 case .page2: return Page 2 case .page3: return Page 3 } } } @Published var detailsPages: [DetailsPage] = [.page1, .page2] @Published var hiddenDetailsPages: [DetailsPage] = [.page3] }SwiftUI code snippet:List { Section { ForEach(self.connector.detailsPages, id: .self) { page in HStack(spacing: 0) { Text((page.printed())) Spacer() } } .onMove { (source, destination) in self.connector.detailsPages.move(fromOffsets: source, toOffset: destination) } .onDelete { (rows) in rows.forEach { (i) in let page: SettingsConnector.DetailsPage = self.connector.detailsPages[i] self.connector.detailsPages.remove(at: i) s

I have the following code written using SwiftUI 2.0, Xcode 12.0 beta 5 on OS 11 beta 5. struct ContentView: View { var body: some View { GeometryReader { geometry in List { ForEach(data, id: .id) { article in ArticleCell(article: article) } .frame(width: geometry.size.width) .listRowInsets(.init(top: 0, leading: 0, bottom: 0, trailing: 0)) } .listStyle(PlainListStyle()) } } } struct Article: Identifiable { let id: String let title: String let description: String } let data = [ Article( id: UUID().uuidString, title: Title 1, description: NASA has awarded the Strategic Research and Analysis, Communications, and Exhibits Services (SRACES) contract to Media Fusion LLC of Huntsville, Alabama, to provide comprehensive strategic research and analysis, communications, and exhibits services at the agency’s Marshall Space Flight Center in Huntsville, Alabama. ), Article( id: UUID().uuidString, title: Title 2, description: Girl Scouts from across the nation will pose questions next week to NASA astrona

SWIFTUI List object .onTapGesture or Click event not setting values ?. Bug or issue with way .sheet works? On list object .onTapGesture / selection of the row I wanted send the Index /value to another view via .Sheet option And 90% of the time I get 0 (wrong value) help / guide , a newbie Code snippets for main view & popup view below //Main view with list object: import SwiftUI struct SwiftUIView_Sheet_Test_Main: View { let workflow_trn_data:[workflow_transaction_data] = [ .init(mst_rec_id: 100, work_task: Task 100), .init(mst_rec_id: 101, work_task: Task 101) ] @State private var selected_Mst_record:Int32 = 0 @State private var isPopupSheetActive:Bool = false var body: some View { Text(Sheet Test Main View) NavigationStack{ List() { ForEach(0..

func perform() async throws What are the abnormal errors thrown by the above ? Can you provide a clear list? error:Error Domain=com.apple.MatterSupport Code=1 (null) Where can I find the error information in the document? MatterSupport / MatterAddDeviceRequest / perform() What does this error mean: Error Domain=com.apple.MatterSupport Code=1