you have the ") - Error Here }" the wrong way around. It should be: navigationBarItems(trailing: Button(action: { print("Hello") }) { Image(systemName: "square.and.pencil") .resizable() .frame(width: 50, height: 50) }) - Error not Here

Instead of sending a String I would send a message (MyMessage) where you can include a type, for example: public struct MyMessage: Codable { var type: Int // 0=word, 1=answer var data: String // the string value public init(type: Int, data: String) { self.type = type self.data = data } } You will have to encode/decode this, then you can find what type of message you received: func session(_ session: MCSession, didReceive data: Data, fromPeer peerID: MCPeerID) { if let response = try? MyMessage.decode(from: data) { DispatchQueue.main.async { if response.type == 0 { self.dictionaryValues["word"] = response.data } else { self.dictionaryValues["answer"] = response.data } } } else { // deal with no data } }

how about just this: let img = UIImage(...) img.pngData() // the data to be saved as png

Yes, as I said, you have to encode/decode this. Try this: extension Encodable { func encode(with encoder: JSONEncoder = JSONEncoder()) throws - Data { return try encoder.encode(self) } } extension Decodable { static func decode(with decoder: JSONDecoder = JSONDecoder(), from data: Data) throws - Self { return try decoder.decode(Self.self, from: data) } } func randomWordSession() { guard let word = try? MyMessage(type: 0, data: dictionaryValues["word"] ?? "").encode() else { return } ... } func answerSession() { guard let answer = try? MyMessage(type: 1, data: dictionaryValues["answer"] ?? "").encode() else { return } ... }

this is untested, you could try something like this: Image(...).highPriorityGesture( DragGesture(minimumDistance: 1, coordinateSpace: .global) .onChanged { let theCGPoint = $0.location ... })

nice solution and article from SwiftUI-Lab. It seems you could achieve something similar with just the following: (let me know if this works for you) struct ContentView: View { var mouseLocation: NSPoint { NSEvent.mouseLocation } @State var overImg = false var body: some View { Image(systemName: "clock").resizable().frame(width: 444, height: 444) .onHover { over in overImg = over } .onAppear(perform: { NSEvent.addLocalMonitorForEvents(matching: [.mouseMoved]) { if overImg { print("mouse: \(self.mouseLocation.x) \(self.mouseLocation.y)") } return $0 } }) } }

you are missing these frameworks: import SwiftUI import CoreLocation

to track down the error, please show a reproducible example, in particular all your code related to "AddictionListViewModel" and "AddictionCellView"

Definitely something wrong with SwiftUI. Here is a simple example that shows "Unable to present. Please file a bug." on iOS, and does not work on Mac Catalyst. struct ContentView: View { @State var arr = ["1","2","3"] var body: some View { NavigationView { ScrollView { ForEach(arr, id: \.self) { name in NavigationLink(destination: Text("view \(name)")) { Text("to view \(name)").padding(5) } } } } } }

@bob_mosh, @shitingsand, your issues may not be related to the original NavigationLink problem. Show us some example code, maybe we can track down your particular issues. In my example I tried all sorts of things, @State, @StateObjects, @ObservedObject, var, etc.. without any impact.

try this: struct ContentView: View { @State var text = "start text" init() { UITextView.appearance().backgroundColor = .clear } var body: some View { NavigationView { ZStack { Color.green.ignoresSafeArea() TextEditor(text: $text) } .navigationTitle("Notepad Test!") } } } or this, if you only want the text editor background color: struct ContentView: View { @State var text = "start text" var body: some View { NavigationView { TextEditor(text: $text).padding().colorMultiply(.green) .navigationTitle("Notepad Test!") } } }

yes it works with List, however even without ScrollView the message still shows, but it works on iPhone. On Mac Catalyst, if I include StackNavigationViewStyle it shows the "error" but it works, whereas without it it doesn't work at all. I'm now on macos 11.4 beta2, target ios 14.5, testing on ios 14.6 iPhone. struct ContentView: View { var body: some View { NavigationView { VStack { NavigationLink(destination: Text("view 1")) { VStack{ Text("to view 1").padding(5) } } NavigationLink(destination: Text("view 2")) { VStack{ Text("to view 2").padding(5) } } NavigationLink(destination: Text("view 3")) { VStack{ Text("to view 3").padding(5) } } } }.navigationViewStyle(StackNavigationViewStyle()) // } }

seems the Alert is trying to render before the View is fully setup, try this: .onAppear { // showingAlert = true }

If you are trying to display an alert on screen transition, then you could try this as a workaround until it is fixed properly: }

tried your code and all is working well for me on macos 11.4 beta, target ios 14.5 and Mac Catalyst and macos 11.3, using Xcode 12.5. You could try: Popover().frame(width: 222, height: 222).background(Color.green) to make sure you can see the Popover. What system are you using/targeting?