We are experiencing an issue where our app gets stuck during launch. The splash screen appears for some time, and then the app either becomes unresponsive or closes unexpectedly. However, there are no crash logs captured in Xcode or Firebase Crashlytics, indicating that the app is not crashing but rather being terminated. This issue is preventing affected users from properly launching the app.
Additionally, some users have reported occasional lag and slow performance when using the app. The issue occurs only for a specific subset of users and appears to be related to other Electronic Logging Device (ELD) apps running in the background. When these apps are active, our app struggles to launch and sometimes becomes unresponsive.
We suspect that this behavior could be related to system resource allocation, such as high memory consumption by background apps, which might be affecting our app's ability to launch correctly. However, we have been unable to reproduce the issue on our end despite multiple attempts.
Actions Performed During App Launch:
Firebase configuration
API requests, including:
Fetching account details
Registering the FCM token with the server
Asynchronous background requests to fetch POI details
Creating a local database and storing POI data in local storage
We would like guidance from Apple regarding potential causes and debugging strategies, especially in scenarios where the app does not produce crash logs but still fails to launch properly. Any insights into memory management, conflicts with background applications, or system resource constraints would be highly appreciated.
Steps to Reproduce:
Install and launch the app on an affected device.
Observe that the app gets stuck on the launch screen.
After some time, the app terminates unexpectedly.
Issue is inconsistent and occurs only for certain users.
Presence of other ELD apps running in the background appears to influence the issue.
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I am trying to retrieve delivered notifications using UNUserNotificationCenter.getDeliveredNotifications(completionHandler:), but I have encountered an issue:
Notifications triggered by UNTimeIntervalNotificationTrigger or UNCalendarNotificationTrigger appear in the delivered list.
However, notifications triggered by UNLocationNotificationTrigger do not appear in the list.
Here is the code I use to fetch delivered notifications:
UNUserNotificationCenter.current().getDeliveredNotifications { notifications in
for notification in notifications {
print("Received notification: \(notification.request.identifier)")
}
}
The notification is scheduled as follows:
let center = UNUserNotificationCenter.current()
let content = UNMutableNotificationContent()
content.title = "Test Notification"
content.body = "This is a location-based notification."
content.sound = .default
let coordinate = CLLocationCoordinate2D(latitude: 37.7749, longitude: -122.4194) // Example coordinates
let region = CLCircularRegion(center: coordinate, radius: 100, identifier: "TestRegion")
region.notifyOnEntry = true
region.notifyOnExit = false
let trigger = UNLocationNotificationTrigger(region: region, repeats: false)
let request = UNNotificationRequest(identifier: "LocationTest", content: content, trigger: trigger)
center.add(request) { error in
if let error = error {
print("Error adding notification: \(error.localizedDescription)")
}
}
Why does getDeliveredNotifications not return notifications that were triggered using UNLocationNotificationTrigger?
How can I retrieve such notifications after they have been delivered?
I'm having an issue specifically with SwiftUI previews in my iOS project. The project builds and runs fine on devices and simulators (in Rosetta mode), but SwiftUI previews fail to load in both Rosetta and native arm64 simulator environments. The main error in the preview is related to the Alamofire dependency in my SiriKit Intents extension:
Module map file '[DerivedData path]/Build/Products/Debug-iphonesimulator/Alamofire/Alamofire.modulemap' not found
This error repeats for multiple Swift files within my SiriKit Intents extension. Additionally, I'm seeing:
Cannot load underlying module for 'Alamofire
Environment
Xcode version: 16.2
macOS version: Sonoma 14.7
Swift version: 6.0.3 (swiftlang-6.0.3.1.10 clang-1600.0.30.1)
Dependency management: CocoaPods
Alamofire version: 5.8
My project is a large, older codebase that contains a mix of UIKit, Objective-C and Swift
Architecture Issue: The project only builds successfully in Rosetta mode for simulators. SwiftUI previews are failing in both Rosetta and native arm64 environments. This suggests there may be a fundamental issue with how the preview system interacts with the project's architecture configuration. What I've Tried I've attempted several solutions without success:
Cleaning the build folder (⇧⌘K and Option+⇧⌘K)
Deleting derived data
Reinstalling dependencies
Restarting Xcode
Removing and re-adding Alamofire
I have been trying to understand and utilize intrinsicSize on a custom UIView for some days now. So far with little success.
The post is quite long, sorry for that :-) Problem is, that the topic is quite complex. While I know that there might be other solutions, I simply want to understand how intrinsicSize can be used correctly.
So when someone knows a good source for a in depth explanation on how to use / implement intrinsicSize you can skip all my questions and just leave me link.
My goal:
Create a custom UIView which uses intrinsicSize to let AutoLayout automatically adopt to different content. Just like a UILabel which automatically resizes depending on its text content, font, font size, etc.
As an example assume a simple view RectsView which does nothing but drawing a given number of rects of a given size with given spacing. If not all rects fit into a single row, the content is wrapped and drawing is continued in another row. Thus the height of the view depends on the different properties (number of rects, rects size, spacing, etc.)
This is very much like a UILabel but instead of words or letters simple rects are drawn. However, while UILabel works perfectly I was not able to achive the same for my RectsView.
Why intrinsicSize
I do not have to use intrinsicSize to achieve my goal. I could also use subviews and add constraints to create such a rect pattern. Or I could use a UICollectionView, etc.
While this might certainly work, I think it would add a lot of overhead. If the goal would be to recreate a UILabel class, one would not use AutoLayout or a CollectionView to arrange the letters to words, would one? Instead one would certainly try to draw the letters manually... Especially when using the RectsView in a TableView or a CollectionView a plain view with direct drawing is certainly better than a complex solution compiled of tons of subviews arranged using AutoLayout.
Of course this is an extreme example. However, at the bottom line there are cases where using intrinsicSize is certainly the better option. Since UILabel and other build in views uses intrinsicSize perfectly, there has to be a way to get this working and I just want to know how :-)
My understanding of intrinsic Size
The problem is that I found no source which really explains it... Thus I have spend several hours trying to understand how to correctly use intrinsicSize without little progress.
This is what I have learned [from the docs][1]:
intrinsicSize is a feature used in AutoLayout. Views which offer an intrinsic height and/or width do not need to specify constraints for these values.
There is no guarantee that the view will exactly get its intrinsicSize. It is more like a way to tell autoLayout which size would be best for the view while autoLayout will calculate the actual size.
The calculation is done using the intrinsicSize and the Compression Resistance + Content Hugging properties.
The calculation of the intrinsicSize should only depend on the content, not of the views frame.
What I do not understand:
How can the calculation be independent from the views frame? Of course the UIImageView can use the size of its image but the height of a UILabel can obviously only be calculated depending on its content AND its width. So how could my RectsView calculate its height without considering the frames width?
When should the calculation of the intrinsicSize happen? In my example of the RectsView the size depends on rect size, spacing and number. In a UILabel the size also depends on multiple properties like text, font, font size, etc. If the calculation is done when setting each property it will be performed multiple times which is quite inefficient. So what is the right place to do it?
I will continue the question a second post due to the character limit...
struct ContentView: View {
@State var isPresented = false
var body: some View {
Button {
isPresented.toggle()
} label: {
Text("Button")
}
.sheet(isPresented: $isPresented) {
SubView()
}
}
}
struct SubView: View {
@State var text = ""
var body: some View {
NavigationStack {
TextEditor(text: $text)
.toolbar {
ToolbarItemGroup(placement: .bottomBar) {
Button("Click") {
}
}
ToolbarItemGroup(placement: .keyboard) {
Button("Click") {
}
}
}
}
}
}
I ran into a problem. When using Storekit1 to purchase an SKU, the user payment was successful, but StoreKit1 did return paymentCancelled to my App. I would like to know under what circumstances this problem may occur? How do I fix it? Thank you
Hello, I have to create an app in Swift that it scan NFC Identity card. It extract data and convert it to human readable data. I do it with below code
import CoreNFC
class NFCIdentityCardReader: NSObject , NFCTagReaderSessionDelegate {
func tagReaderSessionDidBecomeActive(_ session: NFCTagReaderSession) {
print("\(session.description)")
}
func tagReaderSession(_ session: NFCTagReaderSession, didInvalidateWithError error: any Error) {
print("NFC Error: \(error.localizedDescription)")
}
var session: NFCTagReaderSession?
func beginScanning() {
guard NFCTagReaderSession.readingAvailable else {
print("NFC is not supported on this device")
return
}
session = NFCTagReaderSession(pollingOption: .iso14443, delegate: self, queue: nil)
session?.alertMessage = "Hold your NFC identity card near the device."
session?.begin()
}
func tagReaderSession(_ session: NFCTagReaderSession, didDetect tags: [NFCTag]) {
guard let tag = tags.first else {
session.invalidate(errorMessage: "No tag detected")
return
}
session.connect(to: tag) { (error) in
if let error = error {
session.invalidate(errorMessage: "Connection error: \(error.localizedDescription)")
return
}
switch tag {
case .miFare(let miFareTag):
self.readMiFareTag(miFareTag, session: session)
case .iso7816(let iso7816Tag):
self.readISO7816Tag(iso7816Tag, session: session)
case .iso15693, .feliCa:
session.invalidate(errorMessage: "Unsupported tag type")
@unknown default:
session.invalidate(errorMessage: "Unknown tag type")
}
}
}
private func readMiFareTag(_ tag: NFCMiFareTag, session: NFCTagReaderSession) {
// Read from MiFare card, assuming it's formatted as an identity card
let command: [UInt8] = [0x30, 0x04] // Example: Read command for block 4
let requestData = Data(command)
tag.sendMiFareCommand(commandPacket: requestData) { (response, error) in
if let error = error {
session.invalidate(errorMessage: "Error reading MiFare: \(error.localizedDescription)")
return
}
let readableData = String(data: response, encoding: .utf8) ?? response.map { String(format: "%02X", $0) }.joined()
session.alertMessage = "ID Card Data: \(readableData)"
session.invalidate()
}
}
private func readISO7816Tag(_ tag: NFCISO7816Tag, session: NFCTagReaderSession) {
let selectAppCommand = NFCISO7816APDU(instructionClass: 0x00, instructionCode: 0xA4, p1Parameter: 0x04, p2Parameter: 0x00, data: Data([0xA0, 0x00, 0x00, 0x02, 0x47, 0x10, 0x01]), expectedResponseLength: -1)
tag.sendCommand(apdu: selectAppCommand) { (response, sw1, sw2, error) in
if let error = error {
session.invalidate(errorMessage: "Error reading ISO7816: \(error.localizedDescription)")
return
}
let readableData = response.map { String(format: "%02X", $0) }.joined()
session.alertMessage = "ID Card Data: \(readableData)"
session.invalidate()
}
}
}
But I got null. I think that these data are encrypted. How can I convert them to readable data without MRZ, is it possible ?
I need to get personal informations from Identity card via Core NFC.
Thanks in advance.
Best regards
Hi all. I need to save an array of strings in userdefaults. I am using
NSKeyedArchiver.archivedData(withRootObject: rootObject, requiringSecureCoding: false)
to convert array of string to data and then save it in userdefaults.
Inorder to retrieve the data back, I am using
let data = self.userDefaults.data(forKey: "key")!
let unarchiver = try NSKeyedUnarchiver(forReadingFrom: data)
unarchiver.requiresSecureCoding = false
let array = unarchiver.decodeObject(forKey: NSKeyedArchiveRootObjectKey) as? NSObject
This was working perfectly till iOS 18. From iOS 18 in couple of devices, we are getting empty string array while we retrieve the value back from userdefaults. We observed this in an iPhone 12 pro and iPhone 15 running on iOS 18. iPhone 12 pro is facing this issue almost once everyday. In iPhone 15 this happens once in 2-3 days.
Tried printing raw data directly from userdefaults. And I can see some data available. But when we convert that back to array of string, I am getting empty. Tried adding logs in catch block. But couldn't get any. What might be the cause of this issue?
I am developing a sample authorization plugin to sync the user’s local password to the network password. During the process, I prompt the user to enter both their old and new passwords in custom plugin. After the user enters the information, I use the following code to sync the passwords:
try record.changePassword(oldPssword, toPassword: newPassword)
However, I have noticed that this is clearing all saved keychain information, such as web passwords and certificates. Is it expected behavior for record.changePassword to clear previously stored keychain data?
If so, how can I overcome this issue and ensure the keychain information is preserved while syncing the password?
Thank you for your help!
As of iOS 18.3 SDK, Core Bluetooth is still mostly an Objective-C framework: key objects like CBPeripheral inherit from NSObjectProtocol and does not conform to Sendable.
CBCentralManager has a convenience initializer that allows the caller to provide a dispatch_queue for delegate callbacks. I want my Swift package that implements Core Bluetooth to conform to Swift 6 strict concurrency checking.
It is unsafe to dispatch the delegate events onto my own actor, as the passed in objects are presumably not thread-safe. What is the recommended concurrency safe way to implement Core Bluetooth in Swift 6 with strict concurrency checking enabled?
Hi,
I have a file provider based MacOS application where i have a drive added and am trying to download a folder from that drive.
The folder has sub folders and large files in it.
After some time of download started, i keep getting below error.
error: ["The operation could not be completed. Cannot allocate memory", [code: 12, domain: "NSPOSIXErrorDomain"]
The download action is triggered via Finder's download icon(cloud icon with down arrow).
I am using native URLSession to download the files from server. No third party library is used.
What could be the possible reasons for "can not allocate memory" issue?
I'm experiencing a persistent issue with CloudKit sharing in my iOS application. When attempting to present a UICloudSharingController, I receive the error message "Unknown client: ChoreOrganizer" in the console.
App Configuration Details:
App Name: ChoreOrganizer
Bundle ID: com.ProgressByBits.ChoreOrganizer
CloudKit Container ID: iCloud.com.ProgressByBits.ChoreOrganizer
Core Data Model Name: ChoreOrganizer.xcdatamodeld
Core Data Entity: Chore
Error Details:
The error "Unknown client: ChoreOrganizer" occurs when I present the UICloudSharingController
This happens only on the first attempt to share; subsequent attempts during the same app session don't show the error but sharing still doesn't work
All my code executes successfully without errors until UICloudSharingController is presented
Implementation Details:
I'm using NSPersistentCloudKitContainer for Core Data synchronization and UICloudSharingController for sharing. My implementation creates a custom CloudKit zone, saves both a record and a CKShare in that zone, and then presents the sharing controller.
Here's the relevant code:
@MainActor
func presentSharing(from viewController: UIViewController) async throws {
// Create CloudKit container
let container = CKContainer(identifier: containerIdentifier)
let database = container.privateCloudDatabase
// Define custom zone ID
let zoneID = CKRecordZone.ID(zoneName: "SharedChores", ownerName: CKCurrentUserDefaultName)
do {
// Check if zone exists, create if necessary
do {
_ = try await database.recordZone(for: zoneID)
} catch {
let newZone = CKRecordZone(zoneID: zoneID)
_ = try await database.save(newZone)
}
// Create record in custom zone
let recordID = CKRecord.ID(recordName: "SharedChoresRoot", zoneID: zoneID)
let rootRecord = CKRecord(recordType: "ChoreRoot", recordID: recordID)
rootRecord["name"] = "Shared Chores Root" as CKRecordValue
// Create share
let share = CKShare(rootRecord: rootRecord)
share[CKShare.SystemFieldKey.title] = "Shared Tasks" as CKRecordValue
// Save both record and share in same operation
let recordsToSave: [CKRecord] = [rootRecord, share]
_ = try await database.modifyRecords(saving: recordsToSave, deleting: [])
// Present sharing controller
let sharingController = UICloudSharingController(share: share, container: container)
sharingController.delegate = shareDelegate
// Configure popover
if let popover = sharingController.popoverPresentationController {
popover.sourceView = viewController.view
popover.sourceRect = CGRect(
x: viewController.view.bounds.midX,
y: viewController.view.bounds.midY,
width: 1, height: 1
)
popover.permittedArrowDirections = []
}
viewController.present(sharingController, animated: true)
} catch {
throw error
}
}
Steps I've already tried:
Verified correct bundle ID and container ID match in all places (code, entitlements file, Developer Portal)
Added NSUbiquitousContainers configuration to Info.plist
Ensured proper entitlements in the app
Created and configured proper provisioning profiles
Tried both default zone and custom zone for sharing
Various ways of saving the record and share (separate operations, same operation)
Cleaned build folder, deleted derived data, reinstalled the app
Tried on both simulator and physical device
Confirmed CloudKit container exists in CloudKit Dashboard with correct schema
Verified iCloud is properly signed in on test devices
Console Output:
1. Starting sharing process
2. Created CKContainer with ID: iCloud.com.ProgressByBits.ChoreOrganizer
3. Using zone: SharedChores
4. Checking if zone exists
5. Zone exists
7. Created record with ID: <CKRecordID: 0x3033ebd80; recordName=SharedChoresRoot, zoneID=SharedChores:__defaultOwner__>
8. Created share with ID: <CKRecordID: 0x3033ea920; recordName=Share-C4701F43-7591-4436-BBF4-6FA8AF3DF532, zoneID=SharedChores:__defaultOwner__>
9. About to save record and share
10. Records saved successfully
11. Creating UICloudSharingController
12. About to present UICloudSharingController
13. UICloudSharingController presented
Unknown client: ChoreOrganizer
Additional Information:
When accessing the CloudKit Dashboard, I can see that data is being properly synced to the cloud, indicating that the basic CloudKit integration is working. The issue appears to be specific to the sharing functionality.
I would greatly appreciate any insights or solutions to resolve this persistent "Unknown client" error. Thank you for your assistance.
I'm attempting to create a proof of concept of a static library, distributed as an XCFramework, which has two local XCFramework dependencies.
The reason for this is because I'm working to provide a single statically linked library to a customer, instead of providing them with the static library plus the two dependencies.
The Issue
With a fairly simple example project, I'm not able to access any code from the static library without the complier throwing a "No such module" error and saying that it cannot find one of the dependent modules.
Project Layout
I have an example project that has some example targets with basic example code.
Example Project on Github
Target: FrameworkA
Mach-0 Type: Dynamic
Build Mergable Library: Yes
Skip Install: No
Build Libraries For Distribution: Yes
Target: FrameworkB
Mach-0 Type: Dynamic
Build Mergable Library: Yes
Skip Install: No
Build Libraries For Distribution: Yes
XCFrameworks are being generated from these two targets using Apple's recommendations. I've verified that the mergable metadata is present in both framework's Info.plist files.
Each exposes a single struct which will return an example String.
Finally I have my SDK target:
Target: ExampleKit
Mach-0 Type: Static
Build Mergable Library: No
Create Merged Binary: Manual
Skip Install: No
Build Libraries For Distribution: Yes
The two .xcframework files are in the Target's folder structure as well. The "Link Binary With Libraries" build phase includes them and they're Required.
Inside of the ExampleKit target, I have a single public struct which has two static properties which return the example strings from FrameworkA and FrameworkB.
I then have another script which generates an XCFramework from this target.
Expectations
Based on Apple's documentation and the "Meet Mergable Libraries" WWDC session I would expect that I could make a simple iOS app, link the ExampleKit.xcframework, import ExampleKit inside of a file, and be able to access the single public struct present in ExampleKit. Unfortunately, all I get is "No such module FrameworkA".
I would expect that FrameworkA and FrameworkB would have been merged into ExampleKit? I'm really unsure of where to go from here in debugging this. And more importantly, is this even a possible thing to do?
Hi,
I’m practicing with NavigationSplitView for macOS and customizing the sidebar. I’ve managed to adjust most parts, but I couldn’t remove the sidebar’s divider. It seems like it’s not possible in modern SwiftUI. My AppKit knowledge is also not very strong.
How can I remove the sidebar divider?
I want to use a plain background. I also solved it by creating my own sidebar, but I wanted to try it using NavigationSplitView.
No real intruduction for this, so I'll get to the point:
All this code is on GitHub: https://github.com/the-trumpeter/Timetaber-for-iWatch
But first, sorry;
/*
I got roasted,
last time I posted;
for not defining my stuff.
This'll be different,
but's gonna be rough;
'cuz there's lots and lots
to get through:
*/
//this is 'Timetaber Watch App/Define (No expressions)/Courses_vDef.swift' on the GitHub:
struct Course {
let name: String
let icon: String
let room: String
let colour: String
let listName: String
let listIcon: String
let joke: String
init(name: String, icon: String, room: String? = nil, colour: String,
listName: String? = nil, listIcon: String? = nil, joke: String? = nil)
{
self.name = name
self.icon = icon
self.room = room ?? "None"
self.colour = colour
self.listName = listName ?? name
self.listIcon = listIcon ?? (icon+".circle.fill")
self.joke = joke ?? ""
}
}
//this is 'Timetaber Watch App/TimeManager_fDef.swift' on the GitHub:
func getCurrentClass(date: Date) -> Array<Course> {
//returns the course in session depending on the input date
//it is VERY long but
//all you really need to know is what it returns:
//basically: return [rightNow, nextUp]
}
/*
I thought that poetry
would be okay,
But poorly thought things through:
For I'll probably find
that people online
will treat my rhymes like spew.
*/
So into the question:
I have a bunch of views, all (intendedly) watching two variables inside of a class:
//Github: 'Timetaber Watch App/TimetaberApp.swift'
class GlobalData: ObservableObject {
@Published var currentCourse: Course = getCurrentClass(date: .now)[0] // the current timetabled class in session.
@Published var nextCourse: Course = getCurrentClass(date: .now)[1] // the next timetabled class in session
}
...and a bunch of views using them in different ways as follows:
(Sorry, don't have the characters to define functions called in these)
import SwiftUI
//Github: 'Timetaber Watch App/Views/HomeView.swift'
struct HomeView: View {
@StateObject var data = GlobalData()
var body: some View {
//HERE:
let icon = data.currentCourse.icon
let name = data.currentCourse.name
let colour = data.currentCourse.colour
let room = roomOrBlank(course: data.currentCourse)
let next = data.nextCourse
VStack {
//CURRENT CLASS
Image(systemName: icon)
.foregroundColor(Color(colour))//add an SF symbol element
.imageScale(.large)
.font(.system(size: 25).weight(.semibold))
Text(name)
.font(.system(size:23).weight(.bold))
.foregroundColor(Color(colour))
.padding(.bottom, 0.1)
//ROOM
Text(room+"\n")
.multilineTextAlignment(.center)
.foregroundStyle(.gray)
.font(.system(size: 15))
if next.name != noSchool.name {
Spacer()
//NEXT CLASS
Text(nextPrefix(course: next))
.font(.system(size: 15))
Text(getNextString(course: next))
.font(.system(size: 15))
.multilineTextAlignment(.center)
}
}.padding()
}
}
// Github: 'Timetaber Watch App/Views/ListView.swift'
struct listTemplate: View {
@StateObject var data = GlobalData()
var listedCourse: Course = failCourse(feedback: "lT.12")
var courseTime: String = ""
init(course: Course, courseTime: String) {
self.courseTime = courseTime
self.listedCourse = course
}
var body: some View {
let localroom = if listedCourse.room == "None" {
"" } else { listedCourse.room }
let image = if listedCourse.listIcon == "custom1" {
Image(.paintbrushPointedCircleFill)
} else { Image(systemName: listedCourse.listIcon) }
HStack{
image
.foregroundColor(Color(listedCourse.colour))
.padding(.leading, 5)
Text(listedCourse.name)
.bold()
Spacer()
Text(courseTime)
Text(localroom).bold().padding(.trailing, 5)
}
.padding(.bottom, 1)
.background(data.currentCourse.name==listedCourse.name ? Color(listedCourse.colour).colorInvert(): nil) //HERE
}
}
struct listedDay: View {
let day: Dictionary<Int, Course>
var body: some View {
let dayKeys = Array(day.keys).sorted(by: <)
List {
ForEach((0...dayKeys.count-2), id: \.self) {
let num = $0
listTemplate(course: day[dayKeys[num]] ?? failCourse(feedback: "lD.53"), courseTime: time24toNormal(time24: dayKeys[num]))
}
}
}
}
struct ListView: View {
var body: some View {
if storage.shared.termRunningGB && weekdayFunc(inDate: .now) != 1
&& weekdayFunc(inDate: .now) != 7 {
ScrollView {
listedDay(
day: getTimetableDay(
isWeekA:
getIfWeekIsA_FromDateAndGhost(
originDate: .now,
ghostWeek: storage.shared.ghostWeekGB
),
weekDay: weekdayFunc(inDate: .now)
)
)
}
} else if !storage.shared.termRunningGB {
Text("There's no term running.\nThe day's classes will be displayed here.")
.multilineTextAlignment(.center)
.foregroundStyle(.gray)
.font(.system(size: 13))
} else {
Text("No school today.\nThe day's classes will be displayed here.")
.multilineTextAlignment(.center)
.foregroundStyle(.gray)
.font(.system(size: 13))
}
}
}
//There's one more view but I can't fit it for characters.
//On GitHub: 'Timetaber Watch App/Views/SettingsView.swift'
So...
THE FUNCTION:
This function is called when changes are made that will affect the correct output of getCurrentClass. It is intended to reload the views and the current/next variables to reflect those changes.\
//GHub: 'Timetaber Watch App/StorageManager.swift'
func reload() -> Void {
@ObservedObject var globalData: GlobalData //this line is erroring, I don't know how to fix it. Is this even the best/proper way to do this?
let courseData = getCurrentClass(date: .now)
globalData.currentCourse = courseData[0]
globalData.nextCourse = courseData[1]
//Variable '_globalData' used by function definition before being initialized
//that is the error appearing on those above two redefinitions.
print("Setup done\n")
}
Thanks!
-Gill
In my app I need to have access to the users desktop, and I would like to implement the standard dialogue for the user to give permission for this access at launch. I do not want to use the NSOpenPanel() for the user to select the desktop, as I dont think that is an elegant solution.
However I am having issues implementing this.
I use the following code to be granted access to the Desktop URL:
let accessGranted = desktopURL.startAccessingSecurityScopedResource()
However no dialogue box appears and the call returns false
I have also included "Desktop Usage Description" in my plist.
Here is my code
@State var message:String = "Good Luck!"
var body: some View {
VStack {
Button("Get Desktop files") {
accessDesktopWithPermission()
}
Text(message)
}
.padding()
}
//: –—–—–—–—–—–—–—–—–—–—–—–—–—–— ://
func accessDesktopWithPermission(){
guard let desktopURL = getDesktopURL() else{
return
}
let accessGranted = desktopURL.startAccessingSecurityScopedResource()
if accessGranted{
if let content = try? FileManager.default.contentsOfDirectory(at: desktopURL, includingPropertiesForKeys: nil ){
message = "Found \(content.count) on Desktop"
}
else{
message = "issue loading file from desktop"
}
}
else{
message = "Access denied to:\(desktopURL )"
}
}
obviously I have setup something incorrectly so I have also attached my code if anyone is interested to take a look.
[https://www.openscreen.co/DesktopAccess.zip)
I have a very simple CoreData model that has 1 entity and 2 attributes.
This code works fine:
.onChange(of: searchText) { _, text in
evnts.nsPredicate = text.isEmpty ? nil :NSPredicate(format: "eventName CONTAINS %@ " , text )
but I'd like to also search with the same text string for my second attribute (which is a Date). I believe an OR is appropriate for two conditions (find either one). See attempted code below:
evnts.nsPredicate = text.isEmpty ? nil : NSPredicate(format: "(eventName CONTAINS %@) OR (dueDate CONTAINS %i) " , text )
This crashes immediately %@ does the same. Is there a way to accomplish this?
How is SwiftUI not an option below?
In Swift 6, stricter concurrency rules can lead to challenges when making SwiftUI views conform to Equatable. Specifically, the == operator required for Equatable must be nonisolated, which means it cannot access @MainActor-isolated properties. This creates an error when trying to compare views with such properties:
Error Example:
struct MyView: View, Equatable {
let title: String
let count: Int
static func ==(lhs: MyView, rhs: MyView) -> Bool {
// Accessing `title` here would trigger an error due to actor isolation.
return lhs.count == rhs.count
}
var body: some View {
Text(title)
}
}
Error Message:
Main actor-isolated operator function '==' cannot be used to satisfy nonisolated protocol requirement; this is an error in the Swift 6 language mode.
Any suggestions?
Thanks
FB: FB15753655 (SwiftUI View cannot conform custom Equatable protocol in Swift 6.)
This is an issue that occurred while using SwiftUI.
Cannot find '$state' in scope
The other view finds properties normally.
May I know why the error is occurring?
The following code is the full text of the code that causes problems.
import SwiftUI
@Observable
class HomeState {
var title: String = "Home"
}
struct HomeView: View {
@Binding var state: HomeState
var body: some View {
Text(state.title)
}
}
#Preview {
@Previewable @State var state: HomeState = .init()
HomeView(state: $state) /// Error: Cannot find '$state' in scope
}
The same error occurs when using the String type rather than the object.
What did I do wrong?
I am experiencing a crash when performing a batch delete and merging changes on a Core Data store that uses NSPersistentCloudKitContainer. The crash appears to be triggered when positive fractional Decimal values are stored in a TransactionSplit entity (those values are aggregated via a derived attribute in the AccountTransaction entity). If I store whole numbers or negative fractional decimals, deletion seems to work correctly. I suspect that the issue is related to the internal representation of positive fractional decimals in conjunction with a derived attribute.
Data Model Setup:
Account (1:N relationship → AccountTransaction)
AccountTransaction (1:N relationship → TransactionSplit), which contains a derived attribute (e.g., “splits.amount.@sum”) that computes the sum over the “amount” attribute on its related TransactionSplit objects.
TransactionSplit, which contains a stored Decimal attribute named “amount” (of type Decimal/NSDecimalNumber).
Steps to Reproduce:
Insert sample data where each TransactionSplit’s “amount” is set to a positive fractional value (e.g., 1000.01), by using code similar to:
func createSampleData() {
// Execute all creation on the context’s queue.
let checkingAccount = Account(context: context)
checkingAccount.id = UUID()
checkingAccount.name = "Main Checking"
let randomTransactionCount = 1000
for _ in 0..<randomTransactionCount {
let transaction = AccountTransaction(context: context)
transaction.id = UUID()
transaction.account = checkingAccount
let randomValue = Double.random(in: 5...5000)
let decimalValue = NSDecimalNumber(value: randomValue)
let split1 = TransactionSplit(context: context)
split1.id = UUID()
split1.amount = decimalValue
split1.transaction = transaction
let split2 = TransactionSplit(context: context)
split2.id = UUID()
split2.amount = decimalValue
split2.transaction = transaction
}
save()
}
The AccountTransaction’s derived attribute automatically aggregates the sum of its related TransactionSplit amounts.
Perform a batch deletion using NSBatchDeleteRequest (with resultType set to .resultTypeObjectIDs) on your entities and merge the changes back into your main context:
private func delete(_ fetchRequest: NSFetchRequest<NSFetchRequestResult>) {
let batchDeleteRequest = NSBatchDeleteRequest(fetchRequest: fetchRequest)
batchDeleteRequest.resultType = .resultTypeObjectIDs
// ⚠️ When performing a batch delete we need to make sure we read the result back
// then merge all the changes from that result back into our live view context
// so that the two stay in sync.
if let delete = try? context.execute(batchDeleteRequest) as? NSBatchDeleteResult {
let changes = [NSDeletedObjectsKey: delete.result as? [NSManagedObjectID] ?? []]
NSManagedObjectContext.mergeChanges(fromRemoteContextSave: changes, into: [context])
}
}
Save the context after deletion.