Does SwiftUI now support the ability for a chart to have two different Y Axes? ChaptGPT seems to think it does, but I keep getting compiler errors in XCode.
Dive into the world of programming languages used for app development.
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Description:
When attempting to create a duplicate passkey using the ASAuthrorizationController in iOS, the Face ID authentication times out SDK does not return a timeout specific error. Instead, it directly returns an error stating that duplicate passkey cannot be created.
SDK to first handle the FaceID timeout case and provide a distinct timeout error so we can gracefully manage this scenario before the duplicate passkey validation occurs.
Steps to Reproduce:
Implement passkey creation flow using ASAuthorizationController.
Attempt to register a duplicate passkey (e.g., using the same user ID and challenge).
Let FaceID prompt timeout (do not interact with the authentication prompt).
Topic:
Programming Languages
SubTopic:
Swift
A few questions. One, can I safely upgrade to my project to Swift 6.2 without having to require iOS 26+? Two, where do I actually make the upgrade. This is what I see in build settings:
6.2 is not available in the dropdown?
I'm dealing with a strange bug where I am requesting read access for 'appleExerciseTime' and 'activitySummaryType', and despite enabling both in the permission sheet, they are being set to 'sharingDenied'.
I'm writing a Swift Test for making sure permissions are being granted.
@Test
func PermissionsGranted() {
try await self.manager.getPermissions()
for type in await manager.allHealthTypes {
let status = await manager.healthStore.authorizationStatus(for: type)
#expect(status == .sharingAuthorized, "\(type) authorization status is \(status)")
}
}
let healthTypesToShare: Set<HKSampleType> = [
HKQuantityType(.bodyMass),
HKQuantityType(.bodyFatPercentage),
HKQuantityType(.leanBodyMass),
HKQuantityType(.activeEnergyBurned),
HKQuantityType(.basalEnergyBurned),
HKObjectType.workoutType()
]
let allHealthTypes: Set<HKObjectType> = [
HKQuantityType(.bodyMass),
HKQuantityType(.bodyFatPercentage),
HKQuantityType(.leanBodyMass),
HKQuantityType(.activeEnergyBurned),
HKQuantityType(.basalEnergyBurned),
HKQuantityType(.appleExerciseTime),
HKObjectType.activitySummaryType()
]
let healthStore = HKHealthStore()
func getPermissions() async throws {
try await healthStore.requestAuthorization(toShare: self.healthTypesToShare, read: self.allHealthTypes)
}
After 'getPermissions' runs, the permission sheet shows up on the Simulator, and I accept all. I've double checked that the failing permissions show up on the sheet and are enabled. Then the test fails with:
Expectation failed: (status → HKAuthorizationStatus(rawValue: 1)) == (.sharingAuthorized → HKAuthorizationStatus(rawValue: 2)) HKActivitySummaryTypeIdentifier authorization status is HKAuthorizationStatus(rawValue: 1)
Expectation failed: (status → HKAuthorizationStatus(rawValue: 1)) == (.sharingAuthorized → HKAuthorizationStatus(rawValue: 2)) HKActivitySummaryTypeIdentifier authorization status is HKAuthorizationStatus(rawValue: 1)
With the rawValue of '1' being 'sharingDenied'. All other permissions are granted. Is there a workaround here, or something I'm potentially doing wrong?
Hi,
I am exploring Closures and trying to understand how they works. Closure have a special key feature that they can capture the context of the variables/constants from surroundings, once captured we can still use them inside the closure even if the scope in which they are defined does not exist.
I want to understand the lifecycle of captured variable/constant i.e., where are these captured variables stored and when these get created and destroyed.
How is memory managed for captured variables or constants in a closure, depending on whether they are value types or reference types?
Topic:
Programming Languages
SubTopic:
Swift
I'm encountering an issue where certain images are not displaying on some iOS devices, while the same code works perfectly on others. There’s no error or crash — just some images fail to load or display. I've confirmed the image URLs and formats are correct.
Has anyone faced a similar issue or could suggest what might be causing this inconsistent behavior?
Thanks in advance!
Topic:
Programming Languages
SubTopic:
Swift
Is it ok for an Actor type to have a Publisher as a property to let others observe changes over time? Or use the @Published property wrapper to achieve this?
actor MyActor {
var publisher = PassthroughSubject<Int, Never>()
var data: Int {
didSet {
publisher.send(data)
}
}
...
}
// Usage
var tasks = Set<AnyCancellable>()
let actor = MyActor()
Task {
let publisher = await actor.publisher
publisher.sink { print($0) }.store(in: &tasks)
}
This seems like this should be acceptable. I would expect a Publisher to be thread safe, and as long as the Output is a value type things should be fine.
I have been getting random EXC_BAD_ACCESS errors when using this approach. But turning on the address sanitizer causes these crashes to go away. I know that isn't very specific but I wanted to start by seeing if this type of pattern is ok to do.
I have configured DateFormatter in the following way:
let df = DateFormatter()
df.dateFormat = "yyyy-MM-dd'T'HH:mm:ss'Z'"
df.locale = .init(identifier: "en")
df.timeZone = .init(secondsFromGMT: 0)
in some user devices instead of ISO8601 style it returns date like 09/25/2024 12:00:34
Tried to change date format from settings, changed calendar and I think that checked everything that can cause the problem, but nothing helped to reproduce this issue, but actually this issue exists and consumers complain about not working date picker.
Is there any information what can cause such problem? May be there is some bug in iOS itself?
Hi, I've got this view model that will do a search using a database of keywords. It worked fine when the SearchEngine wasn't an actor but a regular class and the SearchResult wasn't a Sendable. But when I changed them, it returned Type of expression is ambiguous without a type annotation error at line 21 ( searchTask = Task {). What did I do wrong here? Thanks.
protocol SearchableEngine: Actor {
func searchOrSuggest(from query: String) -> SearchResult?
func setValidTitles(_ validTitles: [String])
}
@MainActor
final class SearchViewModel: ObservableObject {
@Published var showSuggestion: Bool = false
@Published var searchedTitles: [String] = []
@Published var suggestedKeyword: String? = nil
private var searchTask: Task<Void, Never>?
private let searchEngine: SearchableEngine
init(searchEngine: SearchableEngine) {
self.searchEngine = searchEngine
}
func search(_ text: String) {
searchTask?.cancel()
searchTask = Task {
guard !Task.isCancelled else { return }
let searchResult = await searchEngine.searchOrSuggest(from: text) ?? .notFound
guard !Task.isCancelled else { return }
await MainActor.run {
switch searchResult {
case let .searchItems(_, items):
showSuggestion = false
searchedTitles = items.map(\.title)
suggestedKeyword = nil
case let .suggestion(keyword, _, items):
showSuggestion = true
searchedTitles = items.map(\.title)
suggestedKeyword = keyword
case .notFound:
showSuggestion = false
searchedTitles = []
suggestedKeyword = nil
}
}
}
}
}
I am currently encountering two deprecated errors in my code. Could someone please identify the issues with the code?
Errors:
'init(coordinateRegion:interactionModes:showsUserLocation:userTrackingMode:annotationItems:annotationContent:)' was deprecated in iOS 17.0: Use Map initializers that take a MapContentBuilder instead.
'MapAnnotation' was deprecated in iOS 17.0: Use Annotation along with Map initializers that take a MapContentBuilder instead.
Code:
// MARK: - Stores Map (Dynamic)
struct StoresMapView: View {
@State private var storeLocations: [StoreLocation] = []
@State private var region = MKCoordinateRegion(
center: CLLocationCoordinate2D(latitude: -31.95, longitude: 115.86),
span: MKCoordinateSpan(latitudeDelta: 0.5, longitudeDelta: 0.5)
)
var body: some View {
Map(coordinateRegion: $region, interactionModes: .all, annotationItems: storeLocations) { store in
MapAnnotation(coordinate: CLLocationCoordinate2D(latitude: store.latitude, longitude: store.longitude)) {
VStack(spacing: 4) {
Image(systemName: "leaf.circle.fill")
.font(.title)
.foregroundColor(.green)
Text(store.name)
.font(.caption)
.fixedSize()
}
}
}
.onAppear(perform: loadStoreData)
.navigationTitle("Store Locator")
}
private func loadStoreData() {
guard let url = URL(string: "https://example.com/cop092/StoreLocations.json") else { return }
URLSession.shared.dataTask(with: url) { data, _, _ in
if let data = data, let decoded = try? JSONDecoder().decode([StoreLocation].self, from: data) {
DispatchQueue.main.async {
self.storeLocations = decoded
if let first = decoded.first {
self.region.center = CLLocationCoordinate2D(latitude: first.latitude, longitude: first.longitude)
}
}
}
}.resume()
}
}
I have a Settings class that conform to the TestProtocol. From the function of the protocol I need to call the setString function and this function needs to be on the MainActor. Is there a way of make this work in Swift6, without making the protocol functions running on @MainActor
The calls are as follows:
class Settings: TestProtocol{
var value:String = ""
@MainActor func setString( _ string:String ){
value = string
}
func passString(string: String) {
Task{
await setString(string)
}
}
}
protocol TestProtocol{
func passString( string:String )
}
We have an iOS App built in .NET MAUI (Multi-platform App UI).
This is a web view App.
We wish to integrate APP Clips into this App.
But we are unable to do it, due to less available resources online on such implementation.
We do not wish to share code between .NET MAUI App and App clips
We understand it is not possible to add APP Clips without a parent swift/Xcode app.
As an alternative solution we were thinking to Create a new APP in APP Store Connect using XCode/swift and integrate app clips to it.
This parent app when downloaded by users will only redirect users to our MAIN .NET MAUI app to app store connect.
We need to know if such apps will be approved by APPSTORE Connect? Please guide us on this
Also please do let us know if you have any other solution to integrate App clips to a .NET MAUI App
With Swift being brought to new places, is anyone working on interoperability with PHP? I'd love to replace much of my PHP and Javascript web code with Swift (and ideally SwiftUI for UI design). Are there any projects/people working in this space?
Hey everyone,
I have a problem with an app im creating. The code doesn't have any errors but the console has this that pops up:
Snapshot request 0x1054191d0 complete with error: <NSError: 0x10541a970; domain: FBSSceneSnapshotErrorDomain; code: 4; "an unrelated condition or state was not satisfied"> {
NSLocalizedDescription = an error occurred during a scene snapshotting operation;
}
decidePolicyFor delegate method:
import WebKit
@objc extension DocumentationVC
{
func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction, decisionHandler: @escaping (WKNavigationActionPolicy) -> Void)
Being called just alright in swift 5 minimal concurrency.
Raising concurrency to complete with swift 5 or swift 6. Changing the code to avoid warnings:
@preconcurrency import WebKit
@objc extension DocumentationVC
{
func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction, decisionHandler: @escaping (WKNavigationActionPolicy) -> Void) {
The delegate method is not being called. Changing back to swift 5 concurrency minimal - it is called.
Looking at WKNavigationDelegate:
WK_SWIFT_UI_ACTOR
@protocol WKNavigationDelegate <NSObject>
- (void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction decisionHandler:(WK_SWIFT_UI_ACTOR void (^)(WKNavigationActionPolicy))decisionHandler WK_SWIFT_ASYNC(3);
Changing the delegate method to:
func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction, decisionHandler: @escaping @MainActor (WKNavigationActionPolicy) -> Void) {
And it is called across swift 5 concurrency minimal to complete to swift 6.
I thought, the meaning of @preconcurrency import WebKit was to keep the delegate without @MainActor before the (WKNavigationActionPolicy) still matching regardless the swift concurrency mode?
My point is - this can introduce hidden breaking changes? I didn't see this documented anyhow at: https://www.swift.org/migration/documentation/migrationguide/.
decidePolicyFor is an optional method - so if signature 'mismatches' - there will be no warning on not-implementing the delegate method.
How do we catch or diagnose irregularities like this? Is it something @preconcurrency import WebKit should be ensuring and it is not?
Is this delegate mismatch a bug on swift side or something we should be taking care of while migrating? If it is on us, how do we diagnose these potential mismatches?
我的应用是在mac intel时发生这个问题,从dump看程序一直卡在mmap_locked,不知要怎么修改
程序dump如下
amaran.txt
Topic:
Programming Languages
SubTopic:
General
Consider this Swift struct:
public struct Example
{
public func foo(callback: ()->Void)
{
....
}
public func blah(i: Int)
{
....
}
....
}
Using Swift/C++ interop, I can create Example objects and call methods like blah. But I can't call foo because Swift/C++ interop doesn't currently support passing closures (right?).
On the other hand, Swift/objC does support passing objC blocks to Swift functions. But I can't use that here because Example is a Swift struct, not a class. So I could change it to a class, and update everything to work with reference rather than value semantics; but then I also have to change the objC++ code to create the object and call its methods using objC syntax. I'd like to avoid that.
Is there some hack that I can use to make this possible? I'm hoping that I can wrap a C++ std::function in some sort of opaque wrapper and pass that to swift, or something.
Thanks for any suggestions!
I noticed that when I enter the fully immersive view and then click the X button below the window, the immersive space remains active, and the only way to dismiss it is to click the digital crown. On other apps (Disney+ for example), closing out of the main window while in immersive mode also closes out the immersive space. I tried applying an onDisappear modifier to the the Modules view with a dismissImmersiveSpace, but that doesn't appear to do anything.
Any help would be appreciated.
In scope of one of our project we've faced an issue with constant crashes when integrating C++ library in Swift code using Swift/C++ interoperability.
Investigating the root causes of the issue we've discovered that with new version of Swift bug was introduced.
Long story short: for strings bigger than 27 symbols memory is feed incorrectly that causes the crashes.
By creating this post I wanted to draw community's attention to the problem and promote it to be solved quicker as for now it is not addressed.
Is there any way that I can import a Java module for use from Swift?
Topic:
Programming Languages
SubTopic:
Swift