I used to get an e-mail when people replied to my posts but that is no longer working (I do not know when it broke). I cannot find where it needs to be enabled. Has it been removed? If not, where is it enabled?

I would like to implement a global copy command for my app. The code below is an attempt at achieving this but does not work. struct ContentView: View {   @State private var name = ""      var body: some View {     VStack {       Text("Hallo \(name)")       TextField("Please enter your name", text: $name)     }     .onCopyCommand(perform: {       print("You got to onCopy")       var items = [NSItemProvider]()       let stringData = "Hallo \(name)".data(using: .utf8)!       items.append(NSItemProvider(item: stringData as NSData, typeIdentifier: kUTTypePlainText as String))       return items     })   } } When the user selects something in the TextField, then using the copy menu should copy that text to the clipboard but when it has nothing selected, then I want to copy "Hallo" and the name to the clipboard. As you can see, I tried using the onCopyCommand but Copy is always grayed out. Any ideas on how I can enable Copy on the menu, and handle it when the TextField does not have anything selected?

I have a program where I need to handle Edit>Copy when the first responder cannot. I've added the following to my AppDelegate: @IBAction @objc func copy(_ sender: Any?) {     // My code here...   } But Edit>Copy is greyed out on the menu unless a TextField has focus and it has text selected. How do I get my copy function called when the text field has focus but does not have text selected (or any other case where the current view with focus cannot handle copy)?

The new SwiftUI introduces the new Menu - https://developer.apple.com/documentation/swiftui/menu item but I cannot find any complete examples showing how to use it. I did find an article (cannot link to it here) on how to use Menu but it is connected to a toolbar item only and does not change the menubar. I would like to add a menu item to the menubar in macOS using a SwiftUI App. Any examples of how to do this would be great.

I would like to keep my layout the same, and only rotate views in-place when the screen orientation changes.Below is a simple example of what I am trying to acieve. It shows to TestViews horizontally when in portrait mode, and vertically when in landscape mode.I've made sure that the views themselve does not get re-created in the hope that it would only animate the difference in layout between portrait and landscape, but it makes the views very small, and then animate them in from the corner of the screen.What I am trying to acieve, is for each view to effectively rotate by 90 degrees when the orientation changes. Is it possible in swiftUI?[In my example below, I've hacked my AppDelegate to be my model to get rotation notifications from a publisher in it. This needs to be added for the example to work.]struct TestView: View { var text: String var body: some View { ZStack { RoundedRectangle(cornerRadius: 25.0, style: .continuous) .foregroundColor(Color(red: 0.2, green: 0.2, blue: 0.2)) Text(verbatim: text) .font(.system(size: 95)) .foregroundColor(.white) }.aspectRatio(1.0, contentMode: .fit) } } struct ContentView: View { @EnvironmentObject var model : AppDelegate private let testViews: [TestView] = (0...1).map { TestView(text: "\($0)") } var body: some View { ZStack { if !model.isPotrait { HStack { VStack { testViews[0] testViews[1] } } } else { VStack { HStack { testViews[0] testViews[1] } } } }.padding() } }

I need to do a bit of customisation on a UITextView so I am creating a custom UIViewRepresentable to wrap the UITextView. One of these is that the input should be centred and not wrap. Searching on how to disable wrapping gives various conflicting recommendations, from not using UITextView to wrapping it in a UIScrollView. None of these seem to work reliably. It seems like all that is required, is setting the size of the text container to be sufficiently wide but this is also not working. Below is what I've tried so far but it does not wrap the view. The InputView also seems to take up the entire height of the screen. I have a feeling this is fundamentally part of my problem. What am I missing? import SwiftUI struct InputView: UIViewRepresentable {   @Binding var text: String   typealias UIViewType = UITextView   func makeUIView(context: Context) -> UIViewType {     // Setup text view:     // ----------------     let textView = UITextView()     textView.textAlignment = .center     textView.delegate = context.coordinator     textView.font = UIFont.systemFont(ofSize: 72)          textView.textContainer.widthTracksTextView = false     textView.textContainer.size = CGSize(width: 20000, height: CGFloat.greatestFiniteMagnitude)     textView.autoresizingMask = [.flexibleWidth, .flexibleHeight]          return textView   }      func makeCoordinator() -> InputView.Coordinator {     return Coordinator(self)   }      func updateUIView(_ textView: UIViewType, context: Context) {     if textView.text != text {       textView.text = text     }   }      class Coordinator: NSObject, UITextViewDelegate {     var parent: InputView          init(_ parent: InputView) {       self.parent = parent     }          func textViewDidChange(_ textView: UITextView) {       parent.text = textView.text     }   } } struct ContentView: View {   @State private var input: String = "ShouldNotWrapButScrollHorizontally"      var body: some View {     InputView(text: $input)       .padding()   } } struct ContentView_Previews: PreviewProvider {   static var previews: some View {     ContentView()   } }

I am trying to create a standard stepper with text field in swiftUI, but it does not seem to exist.I need something that looks like this:Do I have to create my own view, or is something already available?I tried an HStack with Text, TextField and stepper, but this does not align properly when placed in a form, and the stepper and text field cannot have a binding to the same value.Any ideas on how to implement this?

Reading other questions and searching on the web, I am clearly missing something very obvious. I am trying to make an app preview video for iOS. I've followed Creating Videos for App Previews to record a video on my iPhone 13. This gives me a video with a resolution of 2532 x 1170 (as expected). The App preview specifications states that the native iPhone 13 resolution is 2436 x 1125 and that the accepted resolution is 1920 x 886. Why is the app preview specification native resolution different from the actual iPhone 13 resolution? Am I missing some insets? When I use Quick Time to save my video as 1080p then I get an output resolution of 1920 x 888 (it seems to be rounding up since the perfect scale would have been 1920 x 887,2037915). I am unable to see how I can get to the accepted native resolution of 2436 x 1125 or how I can resample it to 1920 x 886. I get the exact same results using the simulator. How do I create a preview video in the accepted resolutions?

I have some code that used to work but is failing to bind to a local UDP port saying it is already in use. lsof does not show that the port is being used. Below is my receive function that fails. bindResult is "-1" when calling bind, and the error printed out contains "Address already in use (48)". I am trying to bind to 127.0.0.1:6000. This has been working for a very long time, but I've not used it for one or two months, so not sure if a macOS upgrade or something else broke it. func receive(handleRxData: @escaping (UdpSocket, IpAddress, ArraySlice<UInt8>) -> Void,                withError error: (_ msg: String) -> Void) {          self.handleRxData = handleRxData          var cfSocketContext = CFSocketContext(version: 0, info: nil, retain: nil, release: nil, copyDescription: nil)     cfSocketContext.info = Unmanaged.passRetained(self).toOpaque()          cfSock = CFSocketCreate(kCFAllocatorDefault,                             PF_INET,                             SOCK_DGRAM,                             IPPROTO_UDP, CFSocketCallBackType.readCallBack.rawValue,                             { (socket: CFSocket?, callBackType: CFSocketCallBackType, address: CFData?, data: UnsafeRawPointer?, info: UnsafeMutableRawPointer?) -> Void in                               let udpSocket = Unmanaged<UdpSocket>.fromOpaque(info!).takeUnretainedValue()                               udpSocket.receiveCallback()     },                             UnsafeMutablePointer<CFSocketContext>(&cfSocketContext))     let sock = CFSocketGetNative(cfSock)          // Create ipv4 addr struct:     var sin = sockaddr_in()     if (local.type == .ipv4) {       sin.sin_len = __uint8_t(MemoryLayout.size(ofValue: sin))       sin.sin_family = sa_family_t(AF_INET)       sin.sin_addr.s_addr = local.ipv4.bigEndian       sin.sin_port = local.port.bigEndian     }          let bindResult = withUnsafeMutablePointer(to: &sin) {       $0.withMemoryRebound(to: sockaddr.self, capacity: 1) {         bind(sock, UnsafeMutablePointer<sockaddr>($0), socklen_t(MemoryLayout<sockaddr_in>.size))       }     }     if bindResult < 0 {       error("Could not bind to socket \(sin) ( \(String(cString: strerror(errno)!)) (\(errno)).")       return     }          // Change socket to non-blocking:     let flags = fcntl(sock, F_GETFL);     let fcntlResult = fcntl(sock, F_SETFL, flags | O_NONBLOCK);     if (fcntlResult < 0) {       print("Could not change socket to non-blocking ( \(String(cString: strerror(errno)!)) (\(errno)).")     }     // Add to run loop:     let rls = CFSocketCreateRunLoopSource(nil, cfSock, 0);     if (rls == nil) {       error("Could not get run loop source.")       return     }     CFRunLoopAddSource(CFRunLoopGetCurrent(), rls, CFRunLoopMode.commonModes)// CFRunLoopMode.defaultMode);   }

My question is slightly broader, but hopefully this simple use case states the point.I ofthen run in to the problem where my source of truth is a custom type (struct, array of bytes, int, etc.) that I want to edit. I would like to write a view that has a binding to this type so that all the editing logic lives inside this view without the views outside having to worry how it is edited.The simplest example of this is a view that takes a binding to an Int where the user edits it with a TextField. Up to now I've only been able to do this with a custom UI- or NSViewRepresentable implementation. I thought I had a solution today, but it too does not work. It is close enough, that I thought maybe someone can see a path going further.Below is my code. It has an IntView that takes a binding to an Int, and uses state for the strValue. When it first apears, it updates the local state. It then has a method that can be called to update the binding value (this because I cannot get updates as the text field is changing).My contentView creates this view and stores updateValue so that it can be called when the button is pressed. The problem is that view is a value (not a reference), so the intView created in body() is not the same one as that in the .async call (I double-checked this with the print that prints the pointer to each). When updateValue() is called, I get an exception, because I am using the wrong view. The reason for using an .async call is so that I do not change state when body is computed.Can this code somehow be made to work, or is there another solution to writing IntView that takes a binding to an Int?My problem is often more complicated for example when I want to bind to a struct. If I write a custom __ViewRepresentable solution, then I lose a lot of the ease-of-use of swift, and goes back to manual layout, etc.struct IntView: View { @Binding var value: Int @State private var strValue: String = "" var body: some View { return TextField("Type here", text: $strValue) .onAppear(perform: { self.strValue = "\(self.value)" }) } func updateValue() { value = Int(strValue)! } } struct ContentView: View { @State var intValue: Int = 12 @State var updateValue: (() -> Void)? var body: some View { let intView = IntView(value: $intValue) withUnsafePointer(to: intView) { print("value at first @\($0)") } DispatchQueue.main.async { withUnsafePointer(to: intView) { print("value in async @\($0)") } self.updateValue = intView.updateValue } return VStack { Text("\(intValue)") intView Button(action: { self.updateValue!() }, label: { Text("Get Value") }) } .padding() .frame(maxWidth: .infinity, maxHeight: .infinity) } } struct ContentView_Previews: PreviewProvider { static var previews: some View { ContentView() } }

I've been trying to wrap a UITextField in UIViewRepresentable in order to do some customisation but this does not seem to work. My main issue is that the frame of the UITextField is wrong. I even raised a TSI for this. It was confirmed to be a bug (I raised a bug report) but was told that the only work around is effectively to completely re-write my own Text Field using the basics. I cannot believe something as simple as this has not been solved yet. Below is my minimum code to show the problem. I've tried a lot of things: adding InputView to a ScrollView; constraining the frame of InputView, etc. The problem is that when you keep on typing to fill the UITextField then it's frame gets a negative x-offset and it goes off the screen so that you can no longer see the cursor. How do I fix this, or do I really have no choice but to re-write UITextField? import SwiftUI struct InputView: UIViewRepresentable { let fontName = "Arial" let fontSize: CGFloat = 32.0 @Binding var text: String typealias UIViewType = UITextField func makeUIView(context: Context) -> UIViewType { // Setup text view: // ---------------- let textView = UITextField() textView.delegate = context.coordinator // Creae a dummy view for the inputView (keyboard) so that the default // keyboard is not shown: let dummyView = UIView(frame: CGRect.zero) textView.inputView = dummyView return textView } func makeCoordinator() -> InputView.Coordinator { return Coordinator(self) } func updateUIView(_ textView: UIViewType, context: Context) { if textView.text != text { textView.text = text } } class Coordinator: NSObject, UITextFieldDelegate { var parent: InputView init(_ parent: InputView) { self.parent = parent } func textField(_ textField: UITextField, shouldChangeCharactersIn range: NSRange, replacementString string: String) -> Bool { if let currentValue = textField.text as NSString? { let proposedValue = currentValue.replacingCharacters(in: range, with: string) as String self.parent.text = proposedValue } return true } } } struct ContentView: View { @State private var text: String = "Type here" var body: some View { VStack { InputView(text: $text) Text(text) } } } struct ContentView_Previews: PreviewProvider { static var previews: some View { ContentView() } }

I was hoping to use swift Mirror to create an extension that can change the properties of a struct. It seems however that mutating the child items of the mirror is creating new instances and mutating those instead of the members of the method. Below is a playground that shows my problem. Can I use Mirror to achieve the goal of setting member values of structs that implement the given protocol, or should I take a different approach (and if so what)? import Cocoa struct Point { var x: Int = 0 var y: Int = 0 } protocol Shape { var origin: Point { get } } extension Shape { //: The hope is to have a generic function that will set the value of all parameters of type 'Point' but it is not working. The fact that I do not need "mutating" for this function is another clue that it will not mutate the members of the Shape. mutating func clearAllPoints() { let mirror = Mirror(reflecting: self) for child in mirror.children { // It seems the line below creates a new point instance and it is not the same member of self. if var point = child.value as? Point { point.x = 0 point.y = 0 } } } func printAllPoints() { let mirror = Mirror(reflecting: self) for child in mirror.children { if let point = child.value as? Point { print("\(child.label!) = (x: \(point.x), y: \(point.y)") } } } } struct Rectangle: Shape { var origin = Point() var corner = Point() init() { origin = Point(x: 10, y: 10) corner = Point(x: 20, y: 30) } } var rect = Rectangle() //: rect has just been initialised, and the line below correctly prints all Points as initialised. rect.printAllPoints() //: Hope is that the line below will clear all Points but ... rect.clearAllPoints() //: ... it does not. The line below prints all Points with exactly the same values. rect.printAllPoints()

I have a simple List with nested children forming a tree. Each item can be checked. If all children are checked (or not) then the parent must reflect this state. It must also be possible to change the state of the children by selecting the parent. Below is a simple example that sort-of works. When you change the state of a parent, the state of all the children change as well. But how do I make it work the other way around so that the parent is notified when a child changes? When all the children are checked, the parent should be checked. I cannot get a reference to the parent. I tried adding handlers but that captures self (the parent) in an escaping closure that mutates it. I created a timer for each item that would periodically check the children but this just feels very wrong. I do not want to convert all the value-type coding to reference types but I cannot find an elegant way of solving this problem. Any suggestions will be greatly appreciated. import SwiftUI struct Item: Identifiable { var id = UUID() var name: String var isSelected: Bool = false { didSet { guard children != nil else { return } for i in 0..<children!.count { children![i].isSelected = isSelected } } } var children: [Item]? } struct ContentView: View { @Binding var itemsTree: [Item] var body: some View { List($itemsTree, children: \.children) { $item in Toggle(item.name, isOn: $item.isSelected) } } } @main struct ListQuestionApp: App { @State private var itemTree: [Item] = [ Item(name: "Level 1", children: [ Item(name: "Level 2", children: [ Item(name: "Item B"), Item(name: "Item A") ]) ]) ] var body: some Scene { WindowGroup { ContentView(itemsTree: $itemTree) } } }

I have a simple app with a sidebar listing items and an edit view to edit the details of the selected item. One of the parameters that can be changed in the edit view is the name of the item that is also shown in the sidebar. Below is a simple app demonstrating the problem. It lits 4 people and you can change the name. When you change the name, the sidebar does not change until another is selected. I would like the name in the sidebar to change as it is edited. If I added a text view in the edit view, then it would change as the TextField changes. Why does the item in the sidebar not change (or only change when selecting different item)? class Person: NSObject, ObservableObject {   @Published public var name: String      init(name: String) {     self.name = name   } } class Database {   public var people: [Person]      init() {     people = [Person(name: "Susan"), Person(name: "John"),               Person(name: "Jack"), Person(name: "Mary")]   } } @main struct BindingTestApp: App {   @State private var database = Database(      var body: some Scene {     WindowGroup {       ContentView(people: $database.people)     }   } } struct ContentView: View {   struct SidebarView: View {     @Binding var people: [Person]     @Binding var selectedPerson: Person?          var body: some View {       List(people, id: \.self, selection: $selectedPerson) { person in         Text(person.name)       }.listStyle(SidebarListStyle())     }   }     struct PersonView: View {     @ObservedObject public var person: Person          var body: some View {       TextField("Name", text: $person.name)     }   }      @Binding var people: [Person]   @State private var selectedPerson: Person?      var body: some View {     NavigationView {       SidebarView(people: $people, selectedPerson: $selectedPerson)       if let selectedPerson = selectedPerson {         PersonView(person: selectedPerson)       } else {         Text("Please select or create a person.")       }     }   } } struct ContentView_Previews: PreviewProvider {   @State static private var database = Database()      static var previews: some View {     ContentView(people: $database.people)   } }

I have a SwiftUI sandbox app that uses userDefaults. I would like to verify that the data is correctly saved and also modify it during development to check that my app behaves correctly. I can see the data in ~/Library/Containers//Data/Library/Preferences/.plist. My problem is that when I delete this file to check that my app will behave correctly, then it is re-created with old data. It contains entries that I used for development testing, and not in use any longer. I am unable to get a clean file again. Where is the original data saved, and how do I access it? I've looked in: ~/Library/Preferences ~/Library/Preferences/By Host ~/Library/Caches ~/Library/Saved Application State It is not in one of those locations unless it is named differently. Even a search on my mac did not find it.