I have created a NSView inside the NSWindow. I m trying to identify when the view gets clicked by the user. For this I m using NSClickGestureRecognizer, but the registered method is not getting invoked. I have tried adding this for other widgets like button but it does not work either. Am I missing something? class SelectionList :NSObject, NSTextFieldDelegate{ let containerView = NSView() func createSelectionList (pWindow: NSWindow) { // created container View ... let clickRecognizer = NSClickGestureRecognizer() clickRecognizer.target = self clickRecognizer.buttonMask = 0x2 // right button clickRecognizer.numberOfClicksRequired = 1 clickRecognizer.action = #selector(ClickGestured) containerView .addGestureRecognizer(clickRecognizer) } @objc func clickRecognizer() { print("clicked") } }

I have added an "App Intents Extension" target to my main application in macOS. This generated the below two files: TWAppIntent.swift import AppIntents struct TWAppIntent: AppIntent { static var title: LocalizedStringResource = "TWAppIntent" static var parameterSummary: some ParameterSummary { Summary("Get information on \(\.$TWType)") } // we can have multiple parameter of diff types @Parameter(title: "TWType") var TWType: String func perform() async throws -> some IntentResult { return .result(dialog: "Executed TWAppIntent.") } } TWAppIntentExtension.swift import AppIntents @main struct TWAppIntentExtension: AppIntentsExtension { } I m able to build the extension target and I my intent action is available in the shortcuts app. However, on launching a shortcut with the above created intent action. I m getting the below popups: From what I understand, I m getting this error because I have not added my 'TWAppIntent' to the TWAppIntentExtension.swift file which is the entry point for the extension, but I could not find any documentation around how to add it. Can someone help on how to do it or Is there something else that I m doing wrong?

Can someone update about the current state of the Automator app in macOS. Automator seems like a valuable tool for automating tasks on macOS but in the recent years I have noticed a growing emphasis on the Shortcuts app for automation. It would be great if you could clarify the following: • Current Status of Automator: Is there any official statement regarding the continued support of the Automator app in future macOS versions? • Future of Automator: Does Apple plan to introduce new features or updates for Automator in upcoming releases? • Indifference to Shortcuts App: From what I understand both the ‘Automator’ and the ‘Shortcuts’ app are used for creating workflows/shortcuts to automate tasks. What is it that Automator app has to offer which cannot be done using the Shortcuts app? assuming the continued support for the Automator app. Can all the automator workflows not be automated using the shortcuts app? I understand that Apple is constantly innovating and introducing new tools. However, clarity regarding the future of Automator would be helpful for users like myself. In addition, as a developer I wanted to offer some actions for my application in the Automator app, so that the user can make use of it to create some workflows. But from what I found in the apple documentation here, these action are created using the ‘Automator action’ Project type template in the xcode. However, in the current version of xcode 15, this project type seems to be missing. Does it indicate that apple no longer provides support for applications to create new automator action? If not, how can I provide automator actions for my xcode application?

I wanted to identify the shutdown event in macOS, so that If my application is running and the user performs a system shutdown then my application could be notified of the shutdown event and perform finalization. I came across NSWorkspaceWillPowerOffNotification which is exactly what I require, however, I created a sample application to observe for this notification. Is is observed that right before the system shuts down, the OS terminates my application invoking applicationWillTerminate(_:) delegate and the observer method for 'NSWorkspaceWillPowerOffNotification' is not invoked. I could perform my finalization in the applicationWillTerminate, but I wanted to know why is the observer not getting invoked. Also why is NSWorkspaceWillPowerOffNotification, even provided by apple when it invoked the termination delegate before shutdown? below is how I m adding the observer: NotificationCenter.default.addObserver(forName: NSWorkspace.willPowerOffNotification, object: nil, queue: nil, using: AppDelegate.handlePowerOffNotification) Below is my observer function, which just logs: public static func handlePowerOffNotification(_ notification: Notification) { NSLog (AppDelegate.TAG + "System will power off soon! Perform any necessary cleanup tasks.") // custom logger to log to a file TWLog.Log ("System will power off soon! Perform any necessary cleanup tasks.") }

Is there some notification that apple provides that I can register to, and get notified whenever there is a 'battery low' state? I want to perform certain task in my application for low battery. Is there some way to identify this?

I have a bundled macOS application. This is a non-interactive application where I m performing some task on the worker thread while the main thread waits for this task to be completed. Sometimes this task can be time consuming. I have observed that when I run the application using the bundle( like double click or open command) I can see the OS marking my application as not responding( this is evident as the app icon toggles in the dock and then it states not responding). Although If I run the unix executable in the bundle, the app runs and I do not see the not responding status anywhere. I wanted to understand If this is happening because my main thread is in a waiting state? If yes, what could I do to resolve it because my application logic demands the main thread to wait for the worker thread to complete its task. Is there some way to use some event loop like GCD? Note: I cannot use the delegates(Appkit) event loop because my application will be run in non-GUI context.

I have a UIKit application and I have some swiftUI views(like button widget etc) that I m using in this application which are added as a subview using UIHostingController. I wanted to understand what is the right way as per the apple recommendation on how to perform some updates on these views, since the UIKit and SwiftUI have a different way of operating. In a pure swiftUI application we use the @State variables which when modified the view are re-rendered. However, in an UIKit application we can directly modify the widget property like color or font from the object. So, my question is should I get the hostingController object from the swiftUI view and then perform any update on that UIKit view. Is this the right way? If not, what is the correct way? can someone provide a detailed explanation?

I was looking out for the error handling for rendering the Widgets(like UIButton, UIVIew etc) on the screen in iOS. I am painting the screen programmatically using swift. Considering a simple Widget(like for say UIButton) when we try to create using its initializer and set some properties like 'setTitle' . These functions neither return any value upon success/failure nor in documentation they have mentioned about any exceptions which would be raised upon failure. https://developer.apple.com/documentation/uikit/uibutton/settitle(_:for:) So, how to do error handling here in this scenarios, in case the apis fail to due some reason, like memory issue? There must be some scenarios for these api failure.

in iOS, user can set focus on UItextField and tapping a key in the virtual keyboard updates the text in the textfield. This user action causes the relevant delegates of UITextFieldDelegate to get invoked, i.e the handlers associated with action of user entering some text in the textfield. I m trying to simulate this user action where I am trying to do this programatically. I want to simulate it in a way such that all the handlers/listeners which otherwise would have been invoked as a result of user typing in the textfield should also get invoked now when i am trying to do it programatically. I have a specific usecase of this in my application. Below is how I m performing this simulation. I m manually updating the text field associated(UITextField.text) and updating its value. And then I m invoking the delegate manually as textField.delegate?.textField?(textField, shouldChangeCharactersIn: nsRange, replacementString: replacementString) I wanted to know If this is the right way to do this. Is there something better available that can be used, such that simulation has the same affect as the user performing the update?

I'm working on an iOS app that requires an @mention system in a UITextView, similar to those in apps like Twitter or Slack. Specifically, I need to: Detect @ Symbol and Show Dropdown: When the user types "@", display a dropdown (UITableView or similar) below the cursor with a list of mentionable users, filtered as the user types. Handle Selection: Insert the selected username as a styled mention (e.g., blue text). Smart Backspace Behavior: Ensure backspace deletes an entire mention as a single unit when the cursor is at its end, and cancels the mention process if "@" is deleted. I've implemented a solution using UITextViewDelegate textViewDidChange(_:) to detect "@", a UITableView for the dropdown, and NSAttributedString for styling mentions. For smart backspace, I track mention ranges and handle deletions accordingly. However, I’d like to know: What is Apple’s recommended approach for implementing this behavior? Are there any UIKit APIs that simplify this, for proving this experience like smart backspace or custom text interactions? I’m using Swift/UIKit. Any insights, sample code, or WWDC sessions you’d recommend would be greatly appreciated! Edit: I am adding the ViewController file to demonstrate the approach that I m using. import UIKit // MARK: - Dummy user model struct MentionUser { let id: String let username: String } class ViewController: UIViewController, UITextViewDelegate, UITableViewDelegate, UITableViewDataSource { // MARK: - UI Elements private let textView = UITextView() private let mentionTableView = UITableView() // MARK: - Data private var allUsers: [MentionUser] = [...] private var filteredUsers: [MentionUser] = [] private var currentMentionRange: NSRange? // MARK: - View Lifecycle override func viewDidLoad() { super.viewDidLoad() view.backgroundColor = .white setupTextView() // to setup the UI setupDropdown() // to setup the UI } // MARK: - UITextViewDelegate func textViewDidChange(_ textView: UITextView) { let cursorPosition = textView.selectedRange.location let text = (textView.text as NSString).substring(to: cursorPosition) if let atRange = text.range(of: "@[a-zA-Z0-9_]*$", options: .regularExpression) { let nsRange = NSRange(atRange, in: text) let query = (text as NSString).substring(with: nsRange).dropFirst() currentMentionRange = nsRange filteredUsers = allUsers.filter { $0.username.lowercased().hasPrefix(query.lowercased()) } mentionTableView.reloadData() showMentionDropdown() } else { hideMentionDropdown() currentMentionRange = nil } } func textView(_ textView: UITextView, shouldChangeTextIn range: NSRange, replacementText text: String) -> Bool { if text.isEmpty, let attributedText = textView.attributedText { if range.location == 0 { return true } let attr = attributedText.attributes(at: range.location - 1, effectiveRange: nil) if let _ = attr[.mentionUserId] { let fullRange = (attributedText.string as NSString).rangeOfMentionAt(location: range.location - 1) let mutable = NSMutableAttributedString(attributedString: attributedText) mutable.deleteCharacters(in: fullRange) textView.attributedText = mutable textView.selectedRange = NSRange(location: fullRange.location, length: 0) textView.typingAttributes = [ .font: textView.font ?? UIFont.systemFont(ofSize: 16), .foregroundColor: UIColor.label ] return false } } return true } // MARK: - Dropdown Visibility private func showMentionDropdown() { guard let selectedTextRange = textView.selectedTextRange else { return } mentionTableView.isHidden = false } private func hideMentionDropdown() { mentionTableView.isHidden = true } // MARK: - UITableViewDataSource func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int { return filteredUsers.count } func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell { let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) cell.textLabel?.text = "@\(filteredUsers[indexPath.row].username)" return cell } // MARK: - UITableViewDelegate func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) { insertMention(filteredUsers[indexPath.row]) } // MARK: - Mention Insertion private func insertMention(_ user: MentionUser) { guard let range = currentMentionRange else { return } let mentionText = "\(user.username)" let mentionAttributes: [NSAttributedString.Key: Any] = [ .foregroundColor: UIColor.systemBlue, .mentionUserId: user.id ] let mentionAttrString = NSAttributedString(string: mentionText, attributes: mentionAttributes) let mutable = NSMutableAttributedString(attributedString: textView.attributedText) mutable.replaceCharacters(in: range, with: mentionAttrString) let spaceAttr = NSAttributedString(string: " ", attributes: textView.typingAttributes) mutable.insert(spaceAttr, at: range.location + mentionText.count) textView.attributedText = mutable textView.selectedRange = NSRange(location: range.location + mentionText.count + 1, length: 0) textView.typingAttributes = [ .font: textView.font ?? UIFont.systemFont(ofSize: 16), .foregroundColor: UIColor.label ] hideMentionDropdown() } } // MARK: - Custom Attributed Key extension NSAttributedString.Key { static let mentionUserId = NSAttributedString.Key("mentionUserId") }

I am building a centralized event handling system for UIKit controls and gesture recognizers. My current approach registers events using static methods inside a handler class, like this: internal class TWOSInternalCommonEventKerneliOS { internal static func RegisterTouchUpInside(_ pWidget: UIControl) -> Void { pWidget.addTarget( TWOSInternalCommonEventKerneliOS.self, action: #selector(TWOSInternalCommonEventKerneliOS.WidgetTouchUpInsideListener(_:)), for: .touchUpInside ) } @objc internal static func WidgetTouchUpInsideListener(_ pWidget: UIView) -> Void { print("WidgetTouchUpInside") } } This works in my testing because the methods are marked @objc and static, but I couldn’t find Apple documentation explicitly confirming whether using ClassName.self (instead of an object instance) is officially supported. Questions: Is this approach (passing ClassName.self as the target) recommended or officially supported by UIKit? If not, what is the safer alternative to achieve a similar pattern, where event registration can remain in static methods but still follow UIKit conventions? Would using a shared singleton instance as the target (e.g., TWOSInternalCommonEventKerneliOS.shared) be the correct approach, or is there a better pattern? Looking for official guidance to avoid undefined behavior in production.

I have created a Notification service extension as target to the main MacOS application. I want to update the content of my remote notification using this extension but due to some reason the extension is not getting invoked to update my remote notification. The auto execution of the below method seems to fail for my app extension. didReceive(_ request: UNNotificationRequest, withContentHandler contentHandler: @escaping (UNNotificationContent) -> Void) I have tried the suggested solutions in this link but it did not help. Maybe there are some differences to using Notification service for MacOS and ios that I m not aware. I am able to send normal remote notifications using the curl command, but it is not invoking the notification service extension. Below is the curl command. curl -v --header "apns-topic: $TOPIC" --header "apns-push-type: alert" --header "authorization: bearer $AUTHENTICATION_TOKEN" --data '{"aps": {"mutable-content": 1,"alert": {"title": "Encrypted title","body": "Encrypted body"}},"MEETING_ORGANIZER": "MyMeet"}' --http2 https://${APNS_HOST_NAME}/3/device/${DEVICE_TOKEN} Is there anything I m missing that is causing this problem?

I m trying to identify if my launched process is running on a local mac machine(desktop/laptop) or a virtual macOS X instance like AWS EC2, Azure, MacStadium etc. I am using the below check for this: 1 . If running on native Apple hardware, the returned value contains the model name of the hardware: $ sysctl -n hw.model Macmini8,1 On virtualized hardware, the value may contain the hypervisor name: $ sysctl -n hw.model VMware7,0 If the command output doesn't contain the "Mac" substring, the malware considers that it is running in a virtual machine. 2. Checking USB device vendor names The commands used: ioreg -rd1 -c IOUSBHostDevice | grep "USB Vendor Name" Sample output on native Apple hardware: "USB Vendor Name" = "Apple Inc." "USB Vendor Name" = "Apple Inc." "USB Vendor Name" = "Apple, Inc." On virtualized hardware, the value may contain the hypervisor name: "USB Vendor Name" = "VirtualBox" "USB Vendor Name" = "VirtualBox" A virtual machine can be detected by checking if the command output contains a hypervisor name, for example "VirtualBox", "VMware", etc. 3 . Checking the "IOPlatformExpertDevice" registry class The command used: ioreg -rd1 -c IOPlatformExpertDevice The following fields of the IOPlatformExpertDevice class can be checked in order to detect a virtual machine: I wanted to know can a combination of these be used to identify a process running on a Cloud VM with certainity?

Hi, I am an absolute beginner at IOKit registry and have a usecase to obtain the device manufacturer name, device serial number and device USB vendor name progrmatically. I m able to obtain the same using ioreg command but I wanted to get these values within my program. Thanks in advance. Device serial number: ioreg -rd1 -c IOPlatformExpertDevice | grep 'IOPlatformSerialNumber' Device manufacturer name: ioreg -rd1 -c IOPlatformExpertDevice | grep 'manufacturer' USB device vendor names: ioreg -rd1 -c IOUSBHostDevice | grep "USB Vendor Name"

I have been using the Cpp-Swift Interoperability in Xcode15 for direct communication between Cpp and Swift code. It required a few Build settings changes for the Swift Compiler, creating clang modules(module map file) to access cpp code in swift, specifying module map path to the swift compiler etc. I wanted to use this interoperability feature in my visual studio project which is using Cmake. I want to build via cmake, using Xcode generator. Prior to Swift5.9, we were using a ObjC bridging header whose support was provided in the Cmake using the Xcode attribute flag 'XCODE_ATTRIBUTE_SWIFT_OBJC_BRIDGING_HEADER'. Similarly we were specifying the generated header using the attribute 'XCODE_ATTRIBUTE_SWIFT_OBJC_INTERFACE_HEADER_NAME' I m not able to find similar Xcode attribute property flags for my Cmake to enable this interoperability. What are the changes that we need to make in the Cmake(using Xcode generator) for this new interoperability to work. Can someone help with this?