We want to do below addition to iOS Mobile App.
Airpod announces Push notification = which is workking
now we want to use voice command that "Reply to this" and sending Reply to that notification but it is saying it is not supported in your app.
So basically we need to use feature - Listen and respond to messages with AirPods
Do we need to add any integration inside app for this or it will directly worked with Siri settings ?
Is it possible to do in non messaging App?
Is it possible to do without syncing contacts ?
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Hi,
I'm struggling to understand using Swift-C++ in the same project. I have an existing code-base that makes heavy use of Swift-Objective-C interoperability.
We make use of swift classes in our project. When I enable swift-objective c interoperability I am running into numerous build errors in the generated bridging header.
I'm trying to understand why these errors exist and what to do to get around them.
I have a project that I've set up with some test code, and I'm running into an error here:
public class Foo {
let name: String
public init(name: String) {
self.name = name
}
}
public class Bar {
let name: String
public init(name : String) {
self.name = name;
}
public func getFoo() -> Foo {
return Foo(name: self.name);
}
}
In the header file:
Unknown type name 'Foo'
SWIFT_INLINE_THUNK Foo getFoo() SWIFT_SYMBOL("s:13ForestBuilder3BarC6getFooAA0E0CyF");
This error goes away if I use structs, but for the purposes of porting my codebase, I'd prefer to use classes. Do classes not play nice here? Or am I misunderstanding something.
Thanks.
This topic area is about the programming languages themselves, not about any specific API or tool. If you have an API question, go to the top level and look for a subtopic for that API. If you have a question about Apple developer tools, start in the Developer Tools & Services topic.
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If your question is specific to the Swift Playground app, ask over in Developer Tools & Services > Swift Playground
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If your question is about the Swift language, that’s on topic for Programming Languages > Swift, but you might have more luck asking it in Swift Forums > Using Swift.
General:
Forums topic: Programming Languages
Swift:
Forums subtopic: Programming Languages > Swift
Forums tags: Swift
Developer > Swift website
Swift Programming Language website
The Swift Programming Language documentation
Swift Forums website, and specifically Swift Forums > Using Swift
Swift Package Index website
Concurrency Resources, which covers Swift concurrency
How to think properly about binding memory Swift Forums thread
Other:
Forums subtopic: Programming Languages > Generic
Forums tags: Objective-C
Programming with Objective-C archived documentation
Objective-C Runtime documentation
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let myEmail = "eskimo" + "1" + "@" + "apple.com"
These helper methods allow to use modifier methods in standard for SwiftUI short way.
extension View {
@inline(__always)
func modify(_ block: (_ view: Self) -> some View) -> some View {
block(self)
}
@inline(__always)
func modify<V : View, T>(_ block: (_ view: Self, _ data: T) -> V, with data: T) -> V {
block(self, data)
}
}
_
DISCUSSION
Suppose you have modifier methods:
func addBorder(view: some View) -> some View {
view.padding().border(Color.red, width: borderWidth)
}
func highlight(view: some View, color: Color) -> some View {
view.border(Color.red, width: borderWidth).overlay { color.opacity(0.3) }
}
_
Ordinar Decision
Your code may be like this:
var body: some View {
let image = Image(systemName: "globe")
let borderedImage = addBorder(view: image)
let highlightedImage = highlight(view: borderedImage, color: .red)
let text = Text("Some Text")
let borderedText = addBorder(view: text)
let highlightedText = highlight(view: borderedText, color: .yellow)
VStack {
highlightedImage
highlightedText
}
}
This code doesn't look like standard SwiftUI code.
_
Better Decision
Described above helper methods modify(:) and modify(:,with:) allow to write code in typical for SwiftUI short way:
var body: some View {
VStack {
Image(systemName: "globe")
.modify(addBorder)
.modify(highlight, with: .red)
Text("Some Text")
.modify(addBorder)
.modify(highlight, with: .yellow)
}
}
Error: "Attrubute can only be applied to types not declarations" on line 2 : @unchecked
@unchecked
enum ReminderRow : Hashable, Sendable {
case date
case notes
case time
case title
var imageName : String? {
switch self {
case .date: return "calendar.circle"
case .notes: return "square.and.pencil"
case .time: return "clock"
default : return nil
}
}
var image : UIImage? {
guard let imageName else { return nil }
let configuration = UIImage.SymbolConfiguration(textStyle: .headline)
return UIImage(systemName: imageName, withConfiguration: configuration)
}
var textStyle : UIFont.TextStyle {
switch self {
case .title : return .headline
default : return .subheadline
}
}
}
When i am trying to archive a framework for ML, using below command:
xcodebuild -workspace "./src/MLProject.xcworkspace" -configuration "Release" -sdk "iphoneos" -archivePath "./gen/out/Archives/Release-iphoneos/MLProject" -scheme "MLProject" -derivedDataPath "./gen/out/" archive BUILD_LIBRARY_FOR_DISTRIBUTION=YES SKIP_INSTALL=NO
The same command used to work fine on Xcode 16.4.
Attached is the detailed error
MLProject_Archive_failure.txt
When I run app, it works on iOS16+ device. But when I run on iOS15 device just working on debug mode, if I run release or profile modeI got runtime error:
Log:
(lldb) dyld[4928]: Symbol not found: (_objc_claimAutoreleasedReturnValue)
Referenced from: '/private/var/containers/Bundle/Application/C724D7C6-82FA-4AF3-AE83-EC035B4429A5/Runner.app/Frameworks/geolocator_apple.framework/geolocator_apple'
Expected in: '/usr/lib/libobjc.A.dylib'
thread #1, stop reason = signal SIGABRT
frame #0: 0x0000000106cbb2cc dyld`__abort_with_payload + 8
dyld`__abort_with_payload:
-&gt; 0x106cbb2cc &lt;+8&gt;: b.lo 0x106cbb2e8 ; &lt;+36&gt;
0x106cbb2d0 &lt;+12&gt;: stp x29, x30, [sp, #-0x10]!
0x106cbb2d4 &lt;+16&gt;: mov x29, sp
0x106cbb2d8 &lt;+20&gt;: bl 0x106c8164c ; cerror_nocancel
Target 0: (Runner) stopped.
Flutter doctor :
Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, 3.29.2, on macOS 15.2 24C101 darwin-arm64, locale en-VN)
[✓] Android toolchain - develop for Android devices (Android SDK version 34.0.0)
[✓] Xcode - develop for iOS and macOS (Xcode 16.2)
[✓] Chrome - develop for the web
[✓] Android Studio (version 2024.2)
[✓] VS Code (version 1.97.2)
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?
swift!!宇宙才是你的极限
谁能让它停下!!!
Topic:
Programming Languages
SubTopic:
Swift
Hello
I want to implement customisation to swift argumentparser, Here are following changes want to do it in my cli
changing default footer present in help command output
currently help command output coming like this
OVERVIEW: clisample
USAGE: clisample <subcommand>
OPTIONS:
--version show the version.
-h, --help show the help.
SUBCOMMANDS:
logs (default) Export logs for clisample processes.
See 'clisample --help' for more information.'
so instead of
See 'clisample --help' for more information.'
I want my own string
For more details, run 'clisample help <subcommand>'
customise error string getting from validation error
Error: Missing value for '-t <time>'
Help: -t <time> Time window (e.g. 10h, 30m, 2d).
Usage: clisample logs --time <time>
See 'clisample logs --help' for more information.
so I want error output with example and customised footer, like this
Error: Missing value for '-t <time>'
Help: -t <time> Time window (e.g. 10h, 30m, 2d).
Usage: clisample logs --time <time>
Example: clisample logs -t 5m
For more details, run 'clisample help <subcommand>'
Is this changes possible from anyway?
I notice that Swift Data type's hashValue collision when first 80 byte of data and data length are same because of the Implementation only use first 80 bytes to compute the hash.
https://web.archive.org/web/20120605052030/https://opensource.apple.com/source/CF/CF-635.21/CFData.c
also, even if hash collision on the situation like this, I can check data is really equal or not by ==
does there any reason for this implementation(only use 80 byte of data to make hashValue)?
test code is under below
let dataArray: [UInt8] = [
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00
]
var dataArray1: [UInt8] = dataArray
var dataArray2: [UInt8] = dataArray
dataArray1.append(contentsOf: [0x00, 0x00, 0x00, 0x00])
dataArray2.append(contentsOf: [0xff, 0xff, 0xff, 0xff])
let data1 = Data(dataArray1)
let data2 = Data(dataArray2) // Only last 4 byte differs
print(data1.hashValue)
print(data2.hashValue)
print(data1.hashValue == data2.hashValue) // true
print(data1 == data2) // false
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'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?
I can't find any simple c++ xcodeproj call to swift struct using modern c++ swift mix. there is the fibonacci example that is swift app call to c++.
Base on fibonacci example I create new simple project and fail to build it with error when I try to include #include <SwiftMixTester/SwiftMixTester-Swift.h>
What is wrong?
Is it the right place to ask this?
Any work project link?
Xcode 26.
Topic:
Programming Languages
SubTopic:
Swift
Hi Apple Developer Community,
I'm facing a crash when updating an array of tuples from both a background thread and the main thread simultaneously. Here's a simplified version of the code in a macOS app using AppKit:
class ViewController: NSViewController {
var mainthreadButton = NSButton(title: "test", target: self, action: nil)
var numbers = Array(repeating: (dim: Int, key: String)(0, "default"), count: 1000)
override func viewDidLoad() {
super.viewDidLoad()
view.addSubview(mainthreadButton)
mainthreadButton.translatesAutoresizingMaskIntoConstraints = false
mainthreadButton.centerXAnchor.constraint(equalTo: view.centerXAnchor).isActive = true
mainthreadButton.centerYAnchor.constraint(equalTo: view.centerYAnchor).isActive = true
mainthreadButton.widthAnchor.constraint(equalToConstant: 100).isActive = true
mainthreadButton.heightAnchor.constraint(equalToConstant: 100).isActive = true
mainthreadButton.target = self
mainthreadButton.action = #selector(arraytest(_:))
}
@objc func arraytest(_ sender: NSButton) {
print("array update started")
// Background update
DispatchQueue.global().async {
for i in 0..<1000 {
self.numbers[i].dim = i
}
}
// Main thread update
var sum = 0
for i in 0..<1000 {
numbers[i].dim = i + 1
sum += numbers[i].dim
print("test \(sum)")
}
mainthreadButton.title = "test = \(sum)"
}
}
This results in a crash with the following message:
malloc: double free for ptr 0x136040c00
malloc: *** set a breakpoint in malloc_error_break to debug
What's interesting:
This crash only happens when the tuple contains a String ((dim: Int, key: String))
If I change the tuple type to use two Int values ((dim: Int, key: Int)), the crash does not occur
My Questions:
Why does mutating an array of tuples containing a String crash when accessed from multiple threads?
Why is the crash avoided when the tuple contains only primitive types like Int?
Is there an underlying memory management issue with value types containing reference types like String?
Any explanation about this behavior and best practices for thread-safe mutation of such arrays would be much appreciated.
Thanks in advance!
Hello dear community,
I have the sample code from Apple “CapturingDepthUsingLiDAR” to access the LiDAR on my iPhone 12 Pro. My goal is to use the “photo output” function to generate a point cloud from a single image and then save it as a ply file. So far I have tested different approaches to create a .ply file from the depthmap, the intrinsic camera data and the rgba values. Unfortunately, I have had no success so far and the result has always been an incorrect point cloud.
My question now is whether there are already approaches to this and whether anyone has any experience with it.
Thank you very much in advance!!!
Hi I'm new here - I'm trying to learn Swift and SwiftUI.
Tried on PluralSight and Udemy but they have been outdated and thus hard to follow.
So after finding Apples own guides I felt relieved and happy, but now I'm stuck again.
After they've updated Xcode to use #Preview instead of PreviewProvider it's hard to follow along on their tutorial.
Does anyone know of good resources to study SwiftUI? Or know if apple plan to update their tutorials any time soon?
I'm here now if anyone's interested or it's useful information: https://developer.apple.com/tutorials/app-dev-training/managing-state-and-life-cycle
Hi,
I have a complex structure of classes, and I'm trying to migrate to swift6
For this classes I've a facade that creates the classes for me without disclosing their internals, only conforming to a known protocol
I think I've hit a hard wall in my knowledge of how the actors can exchange data between themselves. I've created a small piece of code that can trigger the error I've hit
import SwiftUI
import Observation
@globalActor
actor MyActor {
static let shared: some Actor = MyActor()
init() {
}
}
@MyActor
protocol ProtocolMyActor {
var value: String { get }
func set(value: String)
}
@MyActor
func make(value: String) -> ProtocolMyActor {
return ImplementationMyActor(value: value)
}
class ImplementationMyActor: ProtocolMyActor {
private(set) var value: String
init(value: String) {
self.value = value
}
func set(value: String) {
self.value = value
}
}
@MainActor
@Observable
class ViewObserver {
let implementation: ProtocolMyActor
var value: String
init() async {
let implementation = await make(value: "Ciao")
self.implementation = implementation
self.value = await implementation.value
}
func set(value: String) {
Task {
await implementation.set(value: value)
self.value = value
}
}
}
struct MyObservedView: View {
@State var model: ViewObserver?
var body: some View {
if let model {
Button("Loaded \(model.value)") {
model.set(value: ["A", "B", "C"].randomElement()!)
}
} else {
Text("Loading")
.task {
self.model = await ViewObserver()
}
}
}
}
The error
Non-sendable type 'any ProtocolMyActor' passed in implicitly asynchronous call to global actor 'MyActor'-isolated property 'value' cannot cross actor boundary
Occurs in the init on the line "self.value = await implementation.value"
I don't know which concurrency error happens... Yes the init is in the MainActor , but the ProtocolMyActor data can only be accessed in a MyActor queue, so no data races can happen... and each access in my ImplementationMyActor uses await, so I'm not reading or writing the object from a different actor, I just pass sendable values as parameter to a function of the object..
can anybody help me understand better this piece of concurrency problem?
Thanks
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've narrowed down my question after many rabbit holes - how can C++ code open any view in Swift. I can call functions in swift from C++ (works great), but not async or main actor (or actor at all) functions. And if I'm not mistaken all views are actors if not main actors? When calling from C+ I think its necessary that the first view be the main actor?
I've implemented the code from the WWDC23 C++ interop video (Zoe's image picker) where I made a view in a struct, and just want to call it and let the view do the work.
The compiler immediately gives me 'cannot expose main actors to C++'. If I'm not mistaken, doesn't this block the opening of any kind of swift view from C++? Hopefully I'm missing something obvious, which is likely :)
In Zoe's code was his entry point into the program still Swift and not actually C++ app?
Thanks!
Thanks!
Topic:
Programming Languages
SubTopic:
Swift