swiftui

I am running Catalina (10.15) with XCode11. After creating a new project and selecting the option to Use SwiftUI, the file opens, but i get an error message in the preview window;'Cannot preview in this file -- active scheme does not build this file. 'the info button says 'Select a scheme that builds a target which contains the current file, or add this file to a target that is built by the current scheme.'i've tried opening numerous new projects, with and without unit tests, but none of them allow it to be previewed. I did see on Twitter that I'm not alone in seeing this issue. Any ideas on steps to troubleshoot it? Thanks all.

I am following the video for the Introducing SwiftUI Building your First App video and am around the 40 minute mark where he has just added the Store swift file. The line didChange.send() gets a fatal error: Cannot invoke 'send' with no arguments. Did anyone have a similar issue and get through it? Or understand the send function and know if there's a parameter I can pass?I have checked my code multiple times but it is identical up to this point, and I have been running and rebuilding the app to my iOS 13 device every step of the way. I hope this isn't a random bug because I'm running Xcode on 10.14.RoomStore.swift-----import SwiftUIimport Combineclass RoomStore : BindableObject { var rooms: [Room] { didSet { didChange.send() ! Cannot invoke 'send' with no arguments } } init(rooms: [Room] = []) { self.rooms = rooms } var didChange = PassthroughSubject<Void, Never>()}

The follow code will produce the following error.Cannot convert value of type 'Binding' to expected argument type 'Binding<_>'import SwiftUI struct ContentView : View { @State private var KG: Int = 30; @State private var Adult: Bool = true; var body: some View { VStack { Picker(selection: $Adult, label: Text(Classification)) { Text(Adult).tag(true) Text(Pediatric).tag(false) } Picker(selection: $KG, label: Text(KG)) { Text(30).tag(30) Text(35).tag(35) Text(40).tag(40) Text(45).tag(45) Text(50).tag(50) Text(55).tag(55) Text(60).tag(60) Text(65).tag(65) Text(70).tag(70) Text(75).tag(75) Text(80).tag(80) } Button(action: { // Do Stuff }) { Text(Calculate) } } } } #if DEBUG struct ContentView_Previews : PreviewProvider { static var previews: some View { ContentView() } } #endifSteps to reproduce are as a follows.Create New Project (For Apple Watch)Use SwiftUIReplace the code in ContentView.swift with the above code.Wait for the error.I'm using XCode Version 11.0 beta (11M336w)Expected ResultI would

I'm trying to show a list with UITextView in the cells to display text the user can select. The text gets clipped, and if I specify isScrollEnabled = false then the text no longer wraps.Here's a simple version of my code:struct UITextViewContainer: UIViewRepresentable { let text: String func makeUIView(context: UIViewRepresentableContext<Self>) -> UITextView { let view = UITextView() view.isScrollEnabled = false view.isEditable = false return view } func updateUIView(_ uiView: UITextView, context: UIViewRepresentableContext<Self>) { uiView.text = self.text } } struct ContentView : View { var body: some View { List(1...5) { item in UITextViewContainer(text: Lorem ipsum dolor sit amet, consectetur adipiscing elit. Curabitur quis pharetra diam, rhoncus tristique orci. Nam semper interdum facilisis. Sed mollis ligula ac odio iaculis iaculis. Ut consectetur bibendum augue, at rutrum metus semper ut. Nam molestie, arcu sed commodo facilisis, erat sem consectetur sem, a mattis nisi libero cursus sapie