Hey, I have a problem. I was using MKMapView in my app, and in the view where I had a background at the top of the screen, in the example it was Color.red, it extended all the way to the top of the screen. Now, I wanted to switch to the newer Map and I'm seeing an issue because I'm getting a navigation bar that cuts off my color as I indicated in the picture. Does anyone know why this is happening and if there's another way to achieve this?
Steps to reproduce:
Change MapView() to Map() to see difference
import SwiftUI
import MapKit
@main
struct TestAppApp: App {
var body: some Scene {
WindowGroup {
ContentView()
}
}
}
struct ContentView: View {
var body: some View {
NavigationStack {
ScrollView(.vertical) {
Color.red
.padding(.top, -200)
.frame(height: 200)
MapView().frame(minHeight: 300) // change this line to Map
}
.navigationTitle("Title")
.navigationBarTitleDisplayMode(.large)
}
}
}
private typealias ViewControllerRepresentable = UIViewControllerRepresentable
struct MapView: ViewControllerRepresentable {
typealias ViewController = UIViewController
class Controller: ViewController {
var mapView: MKMapView {
guard let tempView = view as? MKMapView else {
fatalError("View could not be cast as MapView.")
}
return tempView
}
override func loadView() {
let mapView = MKMapView()
view = mapView
}
}
func makeUIViewController(context: Context) -> Controller {
Controller()
}
func updateUIViewController(_ controller: Controller, context: Context) {
update(controller: controller)
}
func update(controller: Controller) {
}
}
#Preview {
ContentView()
}
I got:
I want:
SwiftUI
RSS for tagProvide views, controls, and layout structures for declaring your app's user interface using SwiftUI.
Posts under SwiftUI tag
200 Posts
Sort by:
Post
Replies
Boosts
Views
Activity
I have a website of a chatbot that also accepts microphone inputs and I embedded that into my swift and the everything other than the mic is working. I have included permission in the info file and here’s some of the code :
import SwiftUI
import WebKit
import AVFoundation
struct WebView: UIViewRepresentable {
let url: URL
class Coordinator: NSObject, WKUIDelegate, WKNavigationDelegate {
var parent: WebView
init(parent: WebView) {
self.parent = parent
}
func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction, decisionHandler: @escaping (WKNavigationActionPolicy) -> Void) {
decisionHandler(.allow)
}
func webView(_ webView: WKWebView, runJavaScriptAlertPanelWithMessage message: String, initiatedByFrame frame: WKFrameInfo, completionHandler: @escaping () -> Void) {
let alert = UIAlertController(title: nil, message: message, preferredStyle: .alert)
alert.addAction(UIAlertAction(title: "OK", style: .default, handler: { _ in
completionHandler()
}))
parent.presentAlert(alert: alert)
}
func webView(_ webView: WKWebView, runJavaScriptConfirmPanelWithMessage message: String, initiatedByFrame frame: WKFrameInfo, completionHandler: @escaping (Bool) -> Void) {
let alert = UIAlertController(title: nil, message: message, preferredStyle: .alert)
alert.addAction(UIAlertAction(title: "OK", style: .default, handler: { _ in
completionHandler(true)
}))
alert.addAction(UIAlertAction(title: "Cancel", style: .cancel, handler: { _ in
completionHandler(false)
}))
parent.presentAlert(alert: alert)
}
func webView(_ webView: WKWebView, runJavaScriptTextInputPanelWithPrompt prompt: String, defaultText: String?, initiatedByFrame frame: WKFrameInfo, completionHandler: @escaping (String?) -> Void) {
let alert = UIAlertController(title: prompt, message: nil, preferredStyle: .alert)
alert.addTextField { textField in
textField.text = defaultText
}
alert.addAction(UIAlertAction(title: "OK", style: .default, handler: { _ in
completionHandler(alert.textFields?.first?.text)
}))
alert.addAction(UIAlertAction(title: "Cancel", style: .cancel, handler: { _ in
completionHandler(nil)
}))
parent.presentAlert(alert: alert)
}
func webView(_ webView: WKWebView, requestMediaCapturePermissionFor origin: WKSecurityOrigin, initiatedByFrame frame: WKFrameInfo, type: WKMediaCaptureType, decisionHandler: @escaping (WKPermissionDecision) -> Void) {
decisionHandler(.grant)
}
func webView(_ webView: WKWebView, didFail navigation: WKNavigation!, withError error: Error) {
print("Navigation error: \(error.localizedDescription)")
}
}
func makeCoordinator() -> Coordinator {
Coordinator(parent: self)
}
func makeUIView(context: Context) -> WKWebView {
let webConfiguration = WKWebViewConfiguration()
webConfiguration.allowsInlineMediaPlayback = true
webConfiguration.mediaTypesRequiringUserActionForPlayback = []
let webView = WKWebView(frame: .zero, configuration: webConfiguration)
webView.uiDelegate = context.coordinator
webView.navigationDelegate = context.coordinator
requestMicrophoneAccess()
return webView
}
func updateUIView(_ webView: WKWebView, context: Context) {
let request = URLRequest(url: url)
webView.load(request)
}
func requestMicrophoneAccess() {
AVAudioSession.sharedInstance().requestRecordPermission { granted in
DispatchQueue.main.async {
if granted {
print("Microphone access granted")
} else {
print("Microphone access denied")
}
}
}
}
func presentAlert(alert: UIAlertController) {
if let windowScene = UIApplication.shared.connectedScenes.first as? UIWindowScene,
let rootViewController = windowScene.windows.first?.rootViewController {
rootViewController.present(alert, animated: true, completion: nil)
}
}
}
Dear community,
I am a new developer and I am building a view (called Root) that has a list of rows where clicking each row navigates to a completely different view.
I have a CaseIteratable enum and I list each enum type using ForEach and each enum case navigates to a different view using NavigationLink and NavigationDestination. But the problem is that clicking any of the rows for the first time navigates correctly to the corresponding view. But when I go back to the root view and chose another row, it navigates me to a blank view for less than a sec and automatically navigates back to the root view.
Below is the code for reference.
I would really appreciate some help and advice here. Thank you very much!
struct RootViewNavigationStack: View {
@AppStorage("items") private var items = Item.allCases
@State private var enableMove = false
@State private var rootStackPath: NavigationPath = .init()
var body: some View {
NavigationStack(path: $rootStackPath) {
VStack {
List {
ForEach(items) { item in
HStack {
NavigationLink(value: item) {
ListCell(
icon: item.icon,
title: item.title)
}
.disabled(enableMove)
if enableMove {
withAnimation {
Image(systemName: "line.3.horizontal")
.foregroundStyle(.secondary)
}
}
}
}
.onMove(perform: enableMove == true ? moveItems : nil)
}
}
.toolbar {
ToolbarItem(placement: .navigationBarTrailing) {
Button {
enableMove.toggle()
} label: {
if enableMove {
Text("Done")
.bold()
} else {
Text("Edit")
}
}
}
}
.navigationDestination(for: Item.self) { item in
item.destinationView
}
.navigationTitle("Root")
}
}
}
and this is the Item enum for more info
Just kindly ignore the var iconName since it doesnt represent any actual SF Symbol name
enum Item: Identifiable, Codable, Hashable, CaseIterable {
case view1
case view2
case view3
case view4
case view5
var id: Item { self }
}
extension Item {
var title: String {
switch self {
case .view1:
"View1"
case .view2:
"View2"
case .view3:
"View3"
case .view4:
"View4"
case .view5:
"View5"
}
}
var iconName: String {
switch self {
case .view1:
"View1"
case .view2:
"View2"
case .view3:
"View3"
case .view4:
"View4"
case .view5:
"View5"
}
}
var icon: Image {
Image(systemName: self.iconName)
}
@ViewBuilder
var destinationView: some View {
switch self {
case .view1:
CarView()
case .view2:
HouseView()
case .view3:
MusicView()
case .view4:
ShoesView()
case .view5:
BooksView()
}
}
}
Once again, would really appreciate someone to help and many thanks 🙏!
This is a report of an issue that appears to be a regression regarding NavigationStack.
I have been aware of an issue where views are being automatically popped within NavigationView / NavigationStack since iOS 15, and it seems to be reoccurring in iOS 18.0 beta2.
Below is the reproducible code. Additionally, in my environment, this problem does not occur iOS 18 simulator, but it does happen on an iPhone XS Max(real device) with iOS 18 beta 2.
Environment:
Xcode: Version 16.0 beta (16A5171c)
iOS: 18.0 (22A5297f)
iPhone: XS Max (real device)
import SwiftUI
@main
struct iOS16_4NavigationSample2App: App {
var body: some Scene {
WindowGroup {
NavigationStack {
NavigationLink {
ContentView()
} label: {
Text("Content")
}
}
}
}
}
enum Kind { case none, a, b, c }
struct Value: Hashable, Identifiable {
let id: UUID = UUID()
var num: Int
}
@MainActor
class ContentModel: ObservableObject {
@Published var kind: Kind = .a
@Published var vals: [Value] = {
return (1...5).map { Value(num: $0) }
}()
init() {}
}
struct ContentView: View {
@StateObject private var model = ContentModel()
@State private var selectedData: Value?
@State private var isShowingSubView = false
@Environment(\.dismiss) private var dismiss
init() {
}
var body: some View {
if #available(iOS 16.0, *) {
List(selection: $selectedData) {
ForEach(model.vals) { val in
NavigationLink(value: val) {
Text("\(val.num)")
}
}
}
.navigationDestination(isPresented: .init(get: {
selectedData != nil
}, set: { newValue in
if !newValue && selectedData != nil {
selectedData = nil
}
}), destination: {
SubView(kind: model.kind)
})
}
}
}
struct SubView: View {
init(kind: Kind) {
print("init(kind:)")
}
init() {
print("init")
}
var body: some View {
Text("Content")
}
}
This code was shared in a different issue [iOS 16.4 NavigationStack Behavior Unstable].
This is a report of an issue that appears to be a regression regarding NavigationStack.
While investigating another issue [iOS18 beta2: NavigationStack, Views Being Popped Automatically] , I encountered this separate issue and wanted to share it.
In a NavigationStack with three levels: RootView - ContentView - SubView,
tapping the Back button from the SubView returned to the RootView instead of the ContentView.
This issue is similar to one that I previously posted regarding iOS16.0 beta.
https://developer.apple.com/forums/thread/715970
Additionally, there is no transition animation when moving from ContentView to SubView.
The reproduction code is as follows:
import SwiftUI
struct RootView2: View {
@State var kind: Kind = .a
@State var vals: [Selection] = {
return (1...5).map { Selection(num: $0) }
}()
@State var selection: Selection?
var body: some View {
if #available(iOS 16.0, *) {
NavigationStack {
NavigationLink {
ContentView2(vals: $vals, selection: $selection)
} label: {
Text("album")
}
.navigationDestination(isPresented: .init(get: {
return selection != nil
}, set: { newValue in
if !newValue {
selection = nil
}
}), destination: {
if let selection {
SubView2(kind: .a, selection: selection)
}
})
}
} else {
EmptyView()
}
}
}
struct ContentView2: View {
@Binding var vals: [Selection]
@Binding var selection: Selection?
@Environment(\.dismiss) private var dismiss
var body: some View {
list
.onChange(of: self.selection) { newValue in
print("changed: \(String(describing: newValue?.num))")
}
}
@ViewBuilder
private var list: some View {
if #available(iOS 16.0, *) {
List(selection: $selection) {
ForEach(self.vals) { val in
NavigationLink(value: val) {
Text("\(String(describing: val))")
}
}
}
}
}
}
//
struct SubView2: View {
let kind: Kind
let selection: Selection
var body: some View {
Text("Content. \(kind): \(selection)")
}
}
I'm giving a go to the new TabSection with iOS 18 but I'm facing an issue with sections actions. I have the following section inside a TabView:
TabSection {
ForEach(accounts) { account in
Tab(account.name , systemImage: account.icon, value: SelectedTab.accounts(account: account)) {
Text(account.name)
}
}
} header: {
Text("Accounts")
}
.sectionActions {
AccountsTabSectionAddAccount()
}
I'm showing a Tab for each account and an action to create new accounts. The issue I'm facing is that when there are no accounts the entire section doesn't appear in the side bar including the action to create new accounts. To make matters worse the action doesn't show at all in macOS even when there are already accounts and the section is present in side bar. Is there some way to make the section actions always visible?
I'm trying to use SwiftData for a new app after ~20 years of Core Data (and EOF before that). So while I'm new to SwiftData, I'm not new to Apple persistence frameworks.
I've got a pretty typical workflow - need to load some JSON from the network, convert that into model objects.
I've created an actor using the @ModelActor macro and I'm using that to do the network fetch and insert. I can set breakpoints in this code and see that it does indeed run and it's running on a non-main queue. That all seems fine.
The problem is that my @Query powered variable in my SwiftUI user interface does not get updated when this data is loaded and saved as I would expect it to.
I'm passing in the container to the actor using modelContext.container from the same modelContext that is powering the view / in the environment. My understanding was that like Core Data before it, the SwiftData framework was listening for the relevant notifications passed by the container/context, processing those and updating the UI but I can only see my data if I quit and relaunch the app.
This seems like it should be a very common use case but I've not found much online. Not sure if that means I'm just doing something fundamentally wrong or what.
Tested on both iOS 18 and 17 with the same results.
Anyone else doing this successfully? What could I be doing wrong?
I have a multi-platform app with the SwiftUI code a separate Swift Package. Any Views with SwiftUI Previews break the compilation of the app. Here's the error message I get in Xcode:
Showing All Messages
ld: warning: Could not parse or use implicit file '/Applications/Xcode-beta.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS.sdk/System/Library/Frameworks/SwiftUICore.framework/SwiftUICore.tbd': cannot link directly with 'SwiftUICore' because product being built is not an allowed client of it
Undefined symbols for architecture arm64_32:
"(extension in SwiftUI):DeveloperToolsSupport.Preview.init(_: Swift.String?, traits: DeveloperToolsSupport.PreviewTrait<DeveloperToolsSupport.Preview.ViewTraits>..., body: @Swift.MainActor @Sendable () -> SwiftUI.View) -> DeveloperToolsSupport.Preview", referenced from:
static BitnessViews.$s12BitnessViews33_ABDBADF565C741E50A2A5746CE94FCD9Ll7PreviewfMf_15PreviewRegistryfMu_.makePreview() throws -> DeveloperToolsSupport.Preview in BitnessViews.o
ld: symbol(s) not found for architecture arm64_32
clang: error: linker command failed with exit code 1 (use -v to see invocation)
Could not parse or use implicit file '/Applications/Xcode-beta.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS.sdk/System/Library/Frameworks/SwiftUICore.framework/SwiftUICore.tbd': cannot link directly with 'SwiftUICore' because product being built is not an allowed client of it
Undefined symbol: (extension in SwiftUI):DeveloperToolsSupport.Preview.init(_: Swift.String?, traits: DeveloperToolsSupport.PreviewTrait<DeveloperToolsSupport.Preview.ViewTraits>..., body: @Swift.MainActor @Sendable () -> SwiftUI.View) -> DeveloperToolsSupport.Preview
Linker command failed with exit code 1 (use -v to see invocation)
Any thoughts as to what might be going on here?
macOS 14.5、Xcode 15.4、iPhone OS 18.0 beta
Open Xcode and create a new project. Select swiftUI for Interface, Swift for Language, and Swiftdata for Storage.
After creating the project, open the ContentView.swift file，write the code
@State var username: String = ""
TextField("info", text: $username)
.textFieldStyle(.roundedBorder)
.disableAutocorrection(true)
.textInputAutocapitalization(.never)
Run the project on iPhone. textField gets focus, freezes, and takes 7000 milliseconds to focus
I'm working on a macOS app where my file format can include other files (think #include in C/C++). When opening a file with SwiftUI's document-based APIs (i.e., FileDocument), is there a way to get access to those other files? Alternatively, is there a way I could "open" the file's directory, similar to how Xcode opens the directory that a .xcodeproj is located?
I don't mind falling back to older Cocoa APIs if this is too obscure for the shiny new stuff :)
After iOS beta 2. download in iPhone 12 touch not work properly. Please fix this issue and please understand my problem. It’s a difficult problem for me. Please fix this issue as soon as possible.
Button {
print("121111-----")
} label: {
Text("asdasa")
}
.background(Color.gray)
.frame(width: 100, height: 50)
Xcode says 'App' is only available in macOS 11.0 or newer when building an app with a package dependency. As soon as I remove the package, the errors disappear. I anyway set the minimum OS requirements as macOS 14.0+, so how does this error exist?
I am creating app in which when user login i am hitting create session api and when user kill the app or not using the app i want to call delete session api. So how i can implement this feature
Hi everyone,
I'm currently working on an iOS app using SwiftUI, and I'm facing an issue with a vertical ScrollView. My goal is to have the ScrollView take up all the safe area space plus the top inset (with the bottom inset being an ultra-thin material) and enable paging behavior. However, I'm encountering two problems:
The initial height of the ScrollView is too high (dragging the view (even without changing the page) adjusts the size).
The paging offset of the ScrollView is incorrect (page views are not aligned).
I’ve tried many things and combinations in desperation, including padding, safeAreaPadding, contentMargins, frame, fixedSize, containerRelativeFrame with callback, custom layout, and others, but nothing seems to work.
If by any chance someone can help me find a solution, I’d greatly appreciate it.
I suspect there are issues with the height defined by the ScrollView when some safe areas are ignored, leading to strange behavior when trying to set the height. It's challenging to explain everything in a simple post, so if someone from the SwiftUI team could look into this potential bug, that would be incredibly helpful.
Thank you!
import SwiftUI
struct ScrollViewIssue: View {
@State private var items: [(String, Color)] = [
("One", .blue),
("Two", .green),
("Three", .red),
("Four", .purple)
]
var body: some View {
ZStack(alignment: .top) {
ScrollView(.vertical) {
VStack(spacing: 0) {
ForEach(items, id: \.0) { item in
ItemView(text: item.0, color: item.1)
.containerRelativeFrame([.horizontal, .vertical])
}
}
}
.printViewSize(id: "ScrollView")
.scrollTargetBehavior(.paging)
.ignoresSafeArea(edges: .top)
VStack {
Text("Title")
.foregroundStyle(Color.white)
.padding()
.frame(maxWidth: .infinity)
.background(Color.black.opacity(0.2))
Spacer()
}
}
.printViewSize(id: "ZStack")
.safeAreaInset(edge: .bottom) {
Rectangle()
.frame(width: .infinity, height: 0)
.overlay(.ultraThinMaterial)
}
}
}
struct ItemView: View {
let text: String
let color: Color
var body: some View {
ZStack {
RoundedRectangle(cornerRadius: 20)
.fill(color.opacity(0.2))
.overlay(
color,
in: RoundedRectangle(cornerRadius: 20)
.inset(by: 10 / 2)
.stroke(lineWidth: 10)
)
Text(text)
}
.printViewSize(id: "item")
}
}
struct ViewSizeKey: PreferenceKey {
static var defaultValue = CGSize()
static func reduce(value: inout CGSize, nextValue: () -> CGSize) {
value = nextValue()
}
}
extension View {
func printViewSize(id: String) -> some View {
background(
GeometryReader { proxy in
Color.clear
.preference(key: ViewSizeKey.self, value: proxy.size)
}
.onPreferenceChange(ViewSizeKey.self) { value in
print("\(id) size:\(value)")
}
)
}
}
#Preview {
ScrollViewIssue()
}
I am working on an iOS application using SwiftUI where I want to convert a JPG and a MOV file to a live photo. I am utilizing the LivePhoto Class from Github for this. The JPG and MOV files are displayed correctly in my WallpaperDetailView, but I am facing issues when trying to download the live photo to the gallery and generate the Live Photo.
Here is the relevant code and the errors I am encountering:
Console prints:
Play button should be visible Image URL fetched and set: Optional("https://firebasestorage.googleapis.com/...") Video is ready to play Video downloaded to: file:///var/mobile/Containers/Data/Application/.../tmp/CFNetworkDownload_7rW5ny.tmp Failed to generate Live Photo
I have verified that the app has the necessary permissions to access the Photo Library.
The JPEG and MOV files are successfully downloaded and can be displayed in the app.
The issue seems to occur when generating the Live Photo from the downloaded files.
struct WallpaperDetailView: View {
var wallpaper: Wallpaper
@State private var isLoading = false
@State private var isImageSaved = false
@State private var imageURL: URL?
@State private var livePhotoVideoURL: URL?
@State private var player: AVPlayer?
@State private var playerViewController: AVPlayerViewController?
@State private var isVideoReady = false
@State private var showBuffering = false
var body: some View {
ZStack {
if let imageURL = imageURL {
GeometryReader { geometry in
KFImage(imageURL)
.resizable()
...
}
}
if let playerViewController = playerViewController {
VideoPlayerViewController(playerViewController: playerViewController)
.frame(maxWidth: .infinity, maxHeight: .infinity)
.clipped()
.edgesIgnoringSafeArea(.all)
}
}
.onAppear {
PHPhotoLibrary.requestAuthorization { status in
if status == .authorized {
loadImage()
} else {
print("User denied access to photo library")
}
}
}
private func loadImage() {
isLoading = true
if let imageURLString = wallpaper.imageURL, let imageURL = URL(string: imageURLString) {
self.imageURL = imageURL
if imageURL.scheme == "file" {
self.isLoading = false
print("Local image URL set: \(imageURL)")
} else {
fetchDownloadURL(from: imageURLString) { url in
self.imageURL = url
self.isLoading = false
print("Image URL fetched and set: \(String(describing: url))")
}
}
}
if let livePhotoVideoURLString = wallpaper.livePhotoVideoURL, let livePhotoVideoURL = URL(string: livePhotoVideoURLString) {
self.livePhotoVideoURL = livePhotoVideoURL
preloadAndPlayVideo(from: livePhotoVideoURL)
} else {
self.isLoading = false
print("No valid image or video URL")
}
}
private func preloadAndPlayVideo(from url: URL) {
self.player = AVPlayer(url: url)
let playerViewController = AVPlayerViewController()
playerViewController.player = self.player
self.playerViewController = playerViewController
let playerItem = AVPlayerItem(url: url)
playerItem.preferredForwardBufferDuration = 1.0
self.player?.replaceCurrentItem(with: playerItem)
...
print("Live Photo Video URL set: \(url)")
}
private func saveWallpaperToPhotos() {
if let imageURL = imageURL, let livePhotoVideoURL = livePhotoVideoURL {
saveLivePhotoToPhotos(imageURL: imageURL, videoURL: livePhotoVideoURL)
} else if let imageURL = imageURL {
saveImageToPhotos(url: imageURL)
}
}
private func saveImageToPhotos(url: URL) {
...
}
private func saveLivePhotoToPhotos(imageURL: URL, videoURL: URL) {
isLoading = true
downloadVideo(from: videoURL) { localVideoURL in
guard let localVideoURL = localVideoURL else {
print("Failed to download video for Live Photo")
DispatchQueue.main.async {
self.isLoading = false
}
return
}
print("Video downloaded to: \(localVideoURL)")
self.generateAndSaveLivePhoto(imageURL: imageURL, videoURL: localVideoURL)
}
}
private func generateAndSaveLivePhoto(imageURL: URL, videoURL: URL) {
LivePhoto.generate(from: imageURL, videoURL: videoURL, progress: { percent in
print("Progress: \(percent)")
}, completion: { livePhoto, resources in
guard let resources = resources else {
print("Failed to generate Live Photo")
DispatchQueue.main.async {
self.isLoading = false
}
return
}
print("Live Photo generated with resources: \(resources)")
self.saveLivePhotoToLibrary(resources: resources)
})
}
private func saveLivePhotoToLibrary(resources: LivePhoto.LivePhotoResources) {
LivePhoto.saveToLibrary(resources) { success in
DispatchQueue.main.async {
if success {
self.isImageSaved = true
print("Live Photo saved successfully")
} else {
print("Failed to save Live Photo")
}
self.isLoading = false
}
}
}
private func fetchDownloadURL(from gsURL: String, completion: @escaping (URL?) -> Void) {
let storageRef = Storage.storage().reference(forURL: gsURL)
storageRef.downloadURL { url, error in
if let error = error {
print("Failed to fetch image URL: \(error)")
completion(nil)
} else {
completion(url)
}
}
}
private func downloadVideo(from url: URL, completion: @escaping (URL?) -> Void) {
let task = URLSession.shared.downloadTask(with: url) { localURL, response, error in
guard let localURL = localURL, error == nil else {
print("Failed to download video: \(String(describing: error))")
completion(nil)
return
}
completion(localURL)
}
task.resume()
}
}```
With the new ControlWidget, is there any way to access the family from the environment?
There is significantly more room on the 2x2 size versus the 2x1 size, and it would be nice to be able to customise labels based on the size currently being displayed.
We can add many models in the Reality Composer Pro scene, but when I use RealityView to display and add modifiers in SwiftUI, the modifiers will have Effect, and I don't want to do this. I hope this modifier will be valid for a single model in the Reality Composer Pro scenario.
May I ask how to add modifiers to a single model in the Reality Composer Pro scene?
Hello :)
As title, I have used RCP with reference objects to capture items in real world. My next step is to detect how close the user finger is that object.
I had tried to get the entity's relative position to root but found the position, somehow, is always the same regardless of how and where I move around the camera or the object.
The entity has a child transform with a collision component, which is used to detect collision when the finger is closed enough to calculate the distance, but it fails as well...
Any help will be appreciated, ty
I have created a minimum example to demonstrate an issue with observing SwiftData model and UndoManager. This project includes a simple NavigationSplitView, an Item SwiftData model that is being persisted and an enabled UndoManager.
Problem: The SwiftData model Item can be observed as expected. Changing the date in the DetailView works as expected and all related views (ListElementView + DetailView) are updated as expected. When pressing ⌘+Z to undo with the enabled UndoManager, deletions or inserts in the sidebar are visible immediately (and properly observed by ContentView). However, when changing the timestamp and pressing ⌘+Z to undo that change, it is not properly observed and immediately updated in the related views (ListElementView + DetailView).
Further comments:
Undo operation to the model value changes (here: timestamp) are visible in the DetailView when changing sidebar selections
Undo operation to the model value changes (here: timestamp) are visible in the ListElementView when restarting the app
Undo operation to the model value changes (here: timestamp) are are properly observed and immediately visible in the sidebar, when ommiting the ListElementView (no view encapsulation)
Relevant code base:
struct ContentView: View {
@Environment(\.modelContext) private var modelContext
@Query private var items: [Item]
@State private var selectedItems: Set<Item> = []
var body: some View {
NavigationSplitView {
List(selection: $selectedItems) {
ForEach(items) { item in
ListElementView(item: item)
.tag(item)
}
.onDelete(perform: deleteItems)
}
.navigationSplitViewColumnWidth(min: 180, ideal: 200)
.toolbar {
ToolbarItem {
Button(action: addItem) {
Label("Add Item", systemImage: "plus")
}
}
}
} detail: {
if let item = selectedItems.first {
DetailView(item: item)
} else {
Text("Select an item")
}
}
.onDeleteCommand {
deleteSelectedItems()
}
}
private func addItem() {
withAnimation {
let newItem = Item(timestamp: Date())
modelContext.insert(newItem)
}
}
private func deleteItems(offsets: IndexSet) {
withAnimation {
for index in offsets {
modelContext.delete(items[index])
}
}
}
private func deleteSelectedItems() {
for selectedItem in selectedItems {
modelContext.delete(selectedItem)
selectedItems.remove(selectedItem)
}
}
}
struct ListElementView: View {
@Bindable var item: Item
var body: some View {
Text("Item at \(item.timestamp, format: Date.FormatStyle(date: .numeric, time: .standard))")
}
}
struct DetailView: View {
@Bindable var item: Item
var body: some View {
Text(item.timestamp, format: Date.FormatStyle(date: .numeric, time: .standard))
DatePicker(selection: $item.timestamp, label: { Text("Change Date:") })
}
}
@Model
final class Item {
var timestamp: Date
init(timestamp: Date) {
self.timestamp = timestamp
}
}
It seems that the UndoManager does not trigger a redraw of the ContentView through the items query? Is this a bug or a feature?