Post not yet marked as solved
I want to add this button with some space in a tab bar I don't know what this button is called and how to add it in Vision Pro app
Post not yet marked as solved
I've found a strange leak, that looks like a bug.
When we open two sheets, or fullscreenCovers and the last one has a TextField, then after closing both, @StateObject property is not released.
If you delete TextField, there will be no memory leak.
It works well and memory is releasing on iOS 16 built with Xcode 15 (simulators)
Memory is leaking and not releasing on iOS 17 built with Xcode 15 (simulators, device 17.4.1)
import SwiftUI
struct ContentView: View {
@State var isFirstOpen: Bool = false
var body: some View {
Button("Open first") {
isFirstOpen = true
}
.sheet(isPresented: $isFirstOpen) {
FirstView()
}
}
}
struct FirstView: View {
@StateObject var viewModel = LeakedViewModel()
var body: some View {
ZStack {
Button("Open second") {
viewModel.isSecondOpen = true
}
}
.sheet(isPresented: $viewModel.isSecondOpen) {
SecondView(onClose: {
viewModel.isSecondOpen = false
})
}
}
}
final class LeakedViewModel: ObservableObject {
@Published var isSecondOpen: Bool = false
init() { print("LeakedViewModel init") }
deinit { print("LeakedViewModel deinit") }
}
struct SecondView: View {
@State private var text: String = ""
private let onClose: () -> Void
init(onClose: @escaping () -> Void) {
self.onClose = onClose
}
var body: some View {
Button("Close second"){
onClose()
}
TextField("text: $text", text: $text)
// Comment TextField and the leak will disappear, viewModel deinit called
}
}
@main
struct LeaksApp: App {
var body: some Scene {
WindowGroup {
ContentView()
}
}
}
May be related to https://forums.developer.apple.com/forums/thread/738840
Post not yet marked as solved
I have a peculiar situation, where the first time I present a sheet from a Section that has the header: set, the sheet disappears by itself the first time it is presented.
@State private var show = false
// …
List {
Section {
Text("foo")
} header: {
Text("bar")
}
.sheet(isPresented: $show) {
Text("baz")
}
// just to enable
Button("toggle") {
show = true
}
}
In Xcode I get this warning when I present the sheet (taken from our live app):
Attempt to present <_TtGC7SwiftUI29PresentationHostingControllerVS_7AnyView_: 0x10a819e00> on <_TtGC7SwiftUI19UIHostingControllerGVS_15ModifiedContentVS_7AnyViewVS_12RootModifier__: 0x10a020600> (from <_TtGC7SwiftUI32NavigationStackHostingControllerVS_7AnyView_: 0x10a0cba00>) while a presentation is in progress.
Tested on iOS 17.4.1, iPadOS 17.4.0 (Simulator), Xcode 15.3 Previews.
Circumstances
The circumstances are as following: a Section has to be in a List, and have content:, and header: or footer: set to something, and have the .sheet(…) set on the section itself.
The problem does not occur with these sections:
Section {
Text("…")
}
Section {
} footer: {
Text("…")
}
Section {
Text("…")
} header: {
}
… but the following views have the sheet disappear the first time it is presented:
Section {
Text("…")
} header: {
Text("…")
}
Section {
Text("…")
} footer: {
Text("…")
}
Section {
Text("…")
} header: {
Text("…")
} footer: {
Text("…")
}
Is this a known issue, and are there any known workarounds to present from a Section?
My best guess is to move the .sheet(…) to the parent container, but I'll have to restructure part of my code quite a bit to do so 😕
Post not yet marked as solved
My goal is to create Apples activity ring sparkle effect. So I found Paul Hudson's Vortex library. There is already a spark effect, but I don't know how to create a custom one that fits my needs. I'm still quite new to SwiftUI animations. Does someone have an idea how to do it?
VortexView(createSparkle()) {
Circle()
.fill(.white)
.frame(width: 16)
.tag("circle")
}
func createSparkle() -> VortexSystem {
let system = VortexSystem(tags: ["circle"])
system.birthRate = 150
system.emissionDuration = 0.2
system.idleDuration = 0.5
system.lifespan = 1.5
system.speed = 1.5
system.speedVariation = 0.2
system.angle = .degrees(330)
system.angleRange = .degrees(30)
system.acceleration = [0, 3]
system.dampingFactor = 4
system.colors = .ramp(.white, .yellow, .yellow.opacity(0))
system.size = 0.1
system.sizeVariation = 0.1
system.stretchFactor = 8
return system
}
Vortex project: https://github.com/twostraws/Vortex
Post not yet marked as solved
My ".navigationTitle" is on my physical iPhone 14 and Simulator iPhone 15 not displayed, on Xcode Preview Screen is it displayed perfect. Why is it and what can i do that is displayed on my iPhone 14.
Post not yet marked as solved
SwiftUI's PhotoPicker doesn't fit into the screen when I place it on a popover and click on it to select a photo.
The relevant code I use:
.popover(
isPresented: $showAttachments
) {
VStack(alignment: .leading, spacing: 20) {
// ...
PhotosPicker(selection: $photos) {
HStack {
Image(systemName: "photo")
Text("Media")
}
}
}
}
It seems like the photo picker is positioned relative to the popover position and I can't find any configuration options regarding to its' positioning.
How to position the PhotoPicker correctly?
Post not yet marked as solved
Hi, wondering if IOS supports WebTransport (HTTP/3) yet?
If so, where can I find information on implementing it in my app?
Post not yet marked as solved
i'm struct dynamic island detail content
dynamicIsland: { context in
DynamicIsland {
expandedContent(context: context)
} compactLeading: {
....
} compactTrailing: {
...
}
i want show different content based on context.
private func expandedContent(context: ActivityViewContext<xxxx>)->DynamicIslandExpandedContent<some View> {
if (context.state.style == 0) {
return expandedControlContent1(context: context)
} else if (context.state.style == 1) {
return expandedControlContent2(context: context)
} else {
return expandedControlContent3(context: context)
}
}
compiles error
Function declares an opaque return type 'some View', but the return statements in its body do not have matching underlying types
Post not yet marked as solved
Here is the view in which it works
struct MileageHistoryView: View {
let vehicle: Vehicle
init(for vehicle: Vehicle) {
self.vehicle = vehicle
}
@Environment(\.modelContext) private var context
@Environment(\.editMode) private var editMode
var sorted: [Mileage] {
guard let history = vehicle.mileageHistory else { return [] }
return history.sorted(by: { $0.timestamp > $1.timestamp })
}
var body: some View {
List {
ForEach(sorted) { mileage in
MileageListItem(mileage, editing: Binding(get: {editMode?.wrappedValue.isEditing ?? false}, set: {_ in }))
}
.onDelete(perform: deleteMileage)
.deleteDisabled(editMode?.wrappedValue.isEditing ?? false ? false : true)
}
.id(editMode?.wrappedValue.isEditing)
.navigationTitle("Mileage History")
.scrollContentBackground(.hidden)
.toolbar {
ToolbarItem(placement: .topBarTrailing, content: {
EditButton()
})
}
}
}
Here is the other view where it doesn't work. In this view, it seems like when the EditButton is pressed, no change is happening with the editMode so deleteDisabled() is always set to true.
struct VehiclesView: View {
@Environment(\.modelContext) private var context
@Environment(\.editMode) private var editMode
// Local
@Query private var vehicles: [Vehicle]
@State private var addVehicle = false
@AppStorage("vehicle-edit-alert") private var showEditAlert = true
@State private var editAlert = false
@State private var editShown = false
var body: some View {
NavigationStack {
List {
ForEach(vehicles) { vehicle in
NavigationLink(destination: VehicleView(vehicle), label: {
VehicleListItem(vehicle)
})
}
.onDelete(perform: deleteVehicle)
.deleteDisabled(self.editMode?.wrappedValue.isEditing ?? false ? false : true)
}
.id(self.editMode?.wrappedValue.isEditing)
.scrollContentBackground(.hidden)
.navigationTitle("Vehicles")
.toolbar {
ToolbarItem(placement: .topBarLeading, content: {
if showEditAlert && !editShown {
Button("Edit") { editAlert = true }
} else {
EditButton()
}
})
ToolbarItem(placement: .topBarTrailing, content: {
Button(action: { addVehicle.toggle() }, label: { Image(systemName: "plus") })
.accessibilityHint("Opens the view to add a Vehicle")
})
}
.fullScreenCover(isPresented: $addVehicle, content: {
VehicleEditor()
})
}
.scrollIndicators(.hidden)
}
}
When EditButton() is used in the second view the list item is grayed out, but the buttons to delete aren't there.
Does anybody know why this is happening?
Post not yet marked as solved
I am developing an app in mixed immersive native app on Vision Pro. In my RealityView, I add my scene by content.add(mainGameScene). Normally the anchored position (original coord) should be the device position but on the ground (with y == 0 on the ground). At least this is how I understand the RealityViewContent works. So if I place something at position (0, 0, -1.0), the object should be in the front of you but on the floor (z axis is pointing backwards)
However recently I load a different scene and I add that with same code, content.add(mainGameScene), something has changed, my scene randomly anchored on the floor or ceiling, according to the places I stand or sit. When I open Visualizations of my anchoring point, I could see that anchor point I am using is on the ceiling. The correct one (around my foots) is left over there.
How could I switch to the correct anchored position? Or does any setting can change the behavior of default RealityViewContent?
Post not yet marked as solved
We've been working on a SwiftUI app that randomly crashes with an exception. When navigating from one view to another, a rare exception is thrown, maybe every 1 / 200 times or so:
<SwiftUI.UIKitNavigationController: 0x109888400> is pushing the same view controller instance (<_TtGC7SwiftUI32NavigationStackHostingControllerVS_7AnyView_: 0x10792d400>) more than once which is not supported and is most likely an error in the application : com.<companyName>.<appName>
We haven't coded anything to directly push an instance of a view controller outside of what SwiftUI is doing. It seems to happen when the user taps on a NavigationLink view. It happens both in simulator and on device. Does anyone know what might cause this?
Post not yet marked as solved
Dear Community,
I have a use case where I have to present multiple sheets of different, non-resizable heights from a View.
It seems like when multiple .presentationDetents() are specified and you control the current detent with selection:, SwiftUI always allows the user to resize the sheet, even if .presentationDragIndicator(.hidden) is set.
In my use case, however, I wouldn't like to let the user do so, because this would result in a small view presented on a large sheet with lot of empty space around.
Specifying just one presentationDetent and changing it or its height programmatically doesn't seem to work: the change does not reflect immediately, even if the view in the sheet is given a new id() every time.
The only thing I could come up with is a custom detent as follows:
import SwiftUI
public class DynamicDetent: CustomPresentationDetent {
static var height: CGFloat = 80
public static func height(in context: Context) -> CGFloat? {
return height
}
}
extension PresentationDetent {
static let dynamic = Self.custom(DynamicDetent.self)
}
As the height() functon is being called every time the sheet is being displayed, setting DynamicDetent.height before displaying a new sheet works. Is there any other, less hacky way to achieve the same result?
Post not yet marked as solved
Hello all,
if I enable the .chartScrollableAxes(.horizontal) and .chartXVisibleDomain(length: length) for a chart view to zoom in the screenshot of the view misses the graphs.
I use this extension:
`extension View {
@MainActor func snapshot() {
let renderer = ImageRenderer(content: self)
if let exportImage = renderer.nsImage {
let pasteboard = NSPasteboard.general
pasteboard.clearContents()
pasteboard.writeObjects([exportImage])
}
}
}`
The screenshot is taken with:
Button("Snap") {
let view = ChartView(text: $statusText, length: $chartLength)
.padding()
.frame(width: 1500, height: 500)
view.snapshot()
}
If I omit .chartScrollableAxes(.horizontal) the snapshot is ok and the graphs are visible in the image but then a zoom is not possible and the whole range is shown.
Any ideas?
Post not yet marked as solved
Hello, I have a question.
I have a LookAroundPreview, that loads correctly a scene, and when I tap on it, it natively shows a view I can navigate in, and that I can close. All that is ok.
However, when I want to display that same LookAroundPreview in a fullScreenCover (because my app needs it for navigation purposes), it directly shows the navigatable View with the closeButton. That I don't want.
Is there an option to pass, that I missed? Is this a bug of the LookAroundPreview? Or is this wanted by Apple devs?
Thank you very much for your help,
Sincerely
import SwiftUI
struct ContentView: View {
@State private var displayFullScreen = false
//AppleLookAroundView is just a wrapper around native LookAroundPreview, that loads a NYC coordinate
var body: some View {
VStack {
AppleLookAroundView()
Spacer()
Button("Display fullScreen cover") {
displayFullScreen = true
}
Spacer()
}
.fullScreenCover(isPresented: $displayFullScreen) {
VStack {
AppleLookAroundView()
Text("⬆ It somehow detects it is in a fullScreenCover and unwantingly change its display")
}
}
}
}
import SwiftUI
import MapKit
import CoreLocation
struct AppleLookAroundView: View {
@State private var scene: MKLookAroundScene?
let coordinate = CLLocationCoordinate2D(latitude: 40.651238394229324, longitude: -73.96432239237737)
var body: some View {
LookAroundPreview(scene: $scene, allowsNavigation: true, badgePosition: .bottomTrailing)
.task {
do {
scene = try await fetchScene(for: coordinate)
} catch {
print("Couldn't fetch scene")
}
}
.frame(height: 300)
}
private func fetchScene(for coordinate: CLLocationCoordinate2D) async throws -> MKLookAroundScene? {
let lookAroundScene = MKLookAroundSceneRequest(coordinate: coordinate)
let scene = try await lookAroundScene.scene
return scene
}
}
![]("https://developer.apple.com/forums/content/attachment/a10a7701-dd8c-4d83-9a03-848cf0373417" "title=Capture d’écran 2024-04-24 à 12.56.46.png;width=898;height=1860")
``
![]("https://developer.apple.com/forums/content/attachment/d54f7fe1-aac8-4280-ab97-663f0bdd440f" "title=Capture d’écran 2024-04-24 à 12.56.34.png;width=924;height=1882")
`
Post not yet marked as solved
The regular case.
Open a sheet by clicking a button. Next close the sheet using a Cancel button on it. The isPresented state variable is changed immediately, but while the dismissing animation isn't totally finished it's impossible to click the Button on the main parent screen and call the sheet presentation again.
As I understand UIKit works differently and lets us click the Button but just calls a new modal view exactly after the previous animation is finished
struct MyView: View {
@State private var isPresented = false
public var body: some View {
VStack {
Button(action: {
isPresented = true
}, label: {
Text("Button")
})
Spacer()
}
.sheet(isPresented: $isPresented) {
sheetContent
}
}
var sheetContent: some View {
VStack {
Text("Cancel")
.onTapGesture {
isPresented = false
}
Spacer()
}
}
}
@Apple Could you please fix it in SwiftUI?
Post not yet marked as solved
Condition: We have an existing app that runs on iPhone and iPad. We want to make it compatible with macOS, along with it we want to leverage some of the macOS native components. We achieved this using macCatalyst, but now we want to build common components using swiftUI for both macOS and iOS platforms.
Challenge: Using SwiftUI view for mac development
Approach 1:
We created a Mac bundle that contained Mac specific views (using Appkit views).
This approach worked fine for creating and using components that are specific to macOS.
Now while developing and using SwiftUI views in mac bundle we face following error -> (NSHostingViewController symbol not found).
Approach 2:
We tried creating a separate Mac app and make it part of MacCatalyst app.
In this approach we were able to show NSStatusBar and add text using SwiftUI view.
But the status bar appearance is inconsistent, sometimes NSStatusBar icon appears but other times it just won't appear.
Can anyone help with the right approach for this scenarios
Post not yet marked as solved
Hello,
I have been working on SwiftData since a month now and i found very weird that every time i update a data inside a SwiftData model my app became very slow.
I used the instrument if something was wrong, and i see memory increasing without releasing.
My app have a list with check and unchecked elements (screeshot below).
I just press check and unchecked 15 times and my memory start from 149mb to 361mb (screenshots below).
For the code i have this model.
final class Milestone: Identifiable {
// *********************************************************************
// MARK: - Properties
@Transient var id = UUID()
@Attribute(.unique) var uuid: UUID
var text: String
var goalId: UUID
var isFinish: Bool
var createdAt: Date
var updatedAt: Date
var goal: Goal?
init(from todoTaskResponse: TodoTaskResponse) {
self.uuid = todoTaskResponse.id
self.text = todoTaskResponse.text
self.goalId = todoTaskResponse.goalId
self.isFinish = todoTaskResponse.isFinish
self.createdAt = todoTaskResponse.createdAt
self.updatedAt = todoTaskResponse.updatedAt
}
init(uuid: UUID, text: String, goalId: UUID, isFinish: Bool, createdAt: Date, updatedAt: Date, goal: Goal? = nil) {
self.uuid = uuid
self.text = text
self.goalId = goalId
self.isFinish = isFinish
self.createdAt = createdAt
self.updatedAt = updatedAt
self.goal = goal
}
}
For the list i have
var milestonesView: some View {
ForEach(milestones) { milestone in
MilestoneRowView(task: milestone) {
milestone.isFinish.toggle()
}
.listRowBackground(Color.backgroundComponent)
}
.onDelete(perform: deleteMilestone)
}
And this is the cell
struct MilestoneRowView: View {
// *********************************************************************
// MARK: - Properties
var task: Milestone
var action: () -> Void
init(task: Milestone, action: @escaping () -> Void) {
self.task = task
self.action = action
}
var body: some View {
Button {
action()
} label: {
HStack(alignment: .center, spacing: 8) {
Image(systemName: task.isFinish ? "checkmark.circle.fill" : "circle")
.font(.title2)
.padding(3)
.contentShape(.rect)
.foregroundStyle(task.isFinish ? .gray : .primary)
.contentTransition(.symbolEffect(.replace))
Text(task.text)
.strikethrough(task.isFinish)
.foregroundStyle(task.isFinish ? .gray : .primary)
}
.foregroundStyle(Color.backgroundComponent)
}
.animation(.snappy, value: task.isFinish)
}
}
Does someone have a idea?
Thanks
Post not yet marked as solved
Hello. I have the following question. I call the nextBatch() method on MusicItemCollection to get the next collection of artist albums. Here is my method:
func allAlbums2(artist: Artist) async throws -> [Album] {
var allAlbums: [Album] = []
artist.albums?.forEach { allAlbums.append($0) }
guard let albums = artist.albums else { return [] }
var albumsCollection = albums
while albumsCollection.hasNextBatch {
let response = try await albumsCollection.nextBatch()
if let response {
albumsCollection = response
var albums = [Album]()
albumsCollection.forEach({ albums.append($0)})
allAlbums.append(contentsOf: albums)
}
}
return allAlbums
}
The problem is as follows. Sometimes it happens that some albums not in nextBatch are not returned (I noticed one, I didn't check the others). This happens once every 50-100 requests. The number of batches is returned the same when the album is skipped. The same albums are returned in the batch where the album was missed. I have a question, do I have a problem with multi-threading or something else or is it a problem in the API. The file contains prints of the returned batches. One with a missing album, the other without a missing one. There are about 3000 lines in the file. I will be grateful for a hint or an answer. Thank you!
Here link to file: https://files.fm/u/nj4r5wgyg3
Post not yet marked as solved
On my shop and content views of my app, I have a shopping cart SF symbol that I've modified with a conditional to show the number of items in the cart if the number of items is above zero. However, whenever I change tabs and back again, that icon disappears even though there should be an item in the cart.
I have a video of the error, but I have no idea how to post it. Here is some of the code, let me know if you need to see more of it:
CartManager.swift
import Foundation
import SwiftUI
@Observable class CartManager {
/*private(set)*/ var products: [Product] = []
private(set) var total: Int = 0
private(set) var numberofproducts: Int = 0
func count() -> Int {
numberofproducts = products.count
return numberofproducts
}
func addToCart(product: Product) {
products.append(product)
total += product.price
numberofproducts = products.count
}
func removeFromCart(product: Product) {
products = products.filter { $0.id != product.id }
total -= product.price
numberofproducts = products.count
}
}
ShopPage.swift
import SwiftUI
struct ShopPage: View {
@Environment(CartManager.self) private var cartManager
var columns = [GridItem(.adaptive(minimum: 135), spacing: 0)]
@State private var searchText = ""
let items = ["LazyHeadphoneBean", "ProperBean", "BabyBean", "RoyalBean", "SpringBean", "beanbunny", "CapBean"]
var filteredItems: [Bean] {
guard searchText.isEmpty else { return beans }
return beans.filter { $0.imageName.localizedCaseInsensitiveContains(searchText) }
}
var body: some View {
NavigationStack {
ZStack(alignment: .top) {
Color.white
.ignoresSafeArea(edges: .all)
VStack {
AppBar()
.environment(cartManager)
ScrollView() {
LazyVGrid(columns: columns, spacing: 20) {
ForEach(productList, id: \.id) { product in
NavigationLink {
beanDetail(product: product)
.environment(cartManager)
} label: {
ProductCardView(product: product)
.environment(cartManager)
}
}
}
}
}
.navigationBarDrawer(displayMode: .always))
}
}
.environment(cartManager)
}
var searchResults: [String] {
if searchText.isEmpty {
return items
} else {
return items.filter { $0.contains(searchText)}
}
}
}
#Preview {
ShopPage()
.environment(CartManager())
}
struct AppBar: View {
@Environment(CartManager.self) private var cartManager
var body: some View {
NavigationStack {
VStack (alignment: .leading){
HStack {
Spacer()
NavigationLink(destination: CartView()
.environment(cartManager)
) {
CartButton(numberOfProducts: cartManager.products.count)
}
}
Text("Shop for Beans")
.font(.largeTitle .bold())
}
}
.padding()
.environment(CartManager())
}
}
CartButton.swift
import SwiftUI
struct CartButton: View {
var numberOfProducts: Int
var body: some View {
ZStack(alignment: .topTrailing) {
Image(systemName: "cart.fill")
.foregroundStyle(.black)
.padding(5)
if numberOfProducts > 0 {
Text("\(numberOfProducts)")
.font(.caption2).bold()
.foregroundStyle(.white)
.frame(width: 15, height: 15)
.background(Color(hue: 1.0, saturation: 0.89, brightness: 0.835))
.clipShape(RoundedRectangle(cornerRadius: 50))
}
}
}
}
#Preview {
CartButton(/*numberOfProducts: 1*/numberOfProducts: 1)
}
Post not yet marked as solved
I prepare an app to migrate from ObservableObject to Observable, from EnvironmentObject to Environment(MyClass.self) and so so forth.
That works OK, very simple.
But, that forces to run on macOS 14 or more recent.
So I would like to have it conditionally, such as:
if macOS 14 available
@Environment(ActiveConfiguration.self) var activeConfiguration: ActiveConfiguration
otherwise
@EnvironmentObject var activeConfiguration: ActiveConfiguration
The same for the class declaration:
if macOS 14 available
@Observable class ActiveConfiguration {
var config = Configuration()
}
otherwise
class ActiveConfiguration : ObservableObject {
@Published var config = Configuration()
}
Is there a way to achieve this (I understand it is not possible through extensions of Macros, as we can do for modifiers) ?
Could I define 2 classes for ActiveConfiguration, but then what about @Environment ?
