Good day, ladies and gents. I have an application that reads audio from the microphone. I'd like it to also be able to read from the Mac's audio output stream. (A bonus would be if it could detect when the Mac is playing music.) I'd eventually be able to figure it out reading docs, but if someone can give a hint, I'd be very grateful, and would owe you the libation of your choice. Here's the code used to set up the AudioUnit: -(NSString*) configureAU { AudioComponent component = NULL; AudioComponentDescription description; OSStatus err = noErr; UInt32 param; AURenderCallbackStruct callback; if( audioUnit ) { AudioComponentInstanceDispose( audioUnit ); audioUnit = NULL; } // was CloseComponent // Open the AudioOutputUnit description.componentType = kAudioUnitType_Output; description.componentSubType = kAudioUnitSubType_HALOutput; description.componentManufacturer = kAudioUnitManufacturer_Apple; description.componentFlags = 0; description.componentFlagsMask = 0; if( component = AudioComponentFindNext( NULL, &description ) ) { err = AudioComponentInstanceNew( component, &audioUnit ); if( err != noErr ) { audioUnit = NULL; return [ NSString stringWithFormat: @"Couldn't open AudioUnit component (ID=%d)", err] ; } } // Configure the AudioOutputUnit: // You must enable the Audio Unit (AUHAL) for input and output for the same device. // When using AudioUnitSetProperty the 4th parameter in the method refers to an AudioUnitElement. // When using an AudioOutputUnit for input the element will be '1' and the output element will be '0'. param = 1; // Enable input on the AUHAL err = AudioUnitSetProperty( audioUnit, kAudioOutputUnitProperty_EnableIO, kAudioUnitScope_Input, 1, &param, sizeof(UInt32) ); chkerr("Couldn't set first EnableIO prop (enable inpjt) (ID=%d)"); param = 0; // Disable output on the AUHAL err = AudioUnitSetProperty( audioUnit, kAudioOutputUnitProperty_EnableIO, kAudioUnitScope_Output, 0, &param, sizeof(UInt32) ); chkerr("Couldn't set second EnableIO property on the audio unit (disable ootpjt) (ID=%d)"); param = sizeof(AudioDeviceID); // Select the default input device AudioObjectPropertyAddress OutputAddr = { kAudioHardwarePropertyDefaultInputDevice, kAudioObjectPropertyScopeGlobal, kAudioObjectPropertyElementMaster }; err = AudioObjectGetPropertyData( kAudioObjectSystemObject, &OutputAddr, 0, NULL, &param, &inputDeviceID ); chkerr("Couldn't get default input device (ID=%d)"); // Set the current device to the default input unit err = AudioUnitSetProperty( audioUnit, kAudioOutputUnitProperty_CurrentDevice, kAudioUnitScope_Global, 0, &inputDeviceID, sizeof(AudioDeviceID) ); chkerr("Failed to hook up input device to our AudioUnit (ID=%d)"); callback.inputProc = AudioInputProc; // Setup render callback, to be called when the AUHAL has input data callback.inputProcRefCon = self; err = AudioUnitSetProperty( audioUnit, kAudioOutputUnitProperty_SetInputCallback, kAudioUnitScope_Global, 0, &callback, sizeof(AURenderCallbackStruct) ); chkerr("Could not install render callback on our AudioUnit (ID=%d)"); param = sizeof(AudioStreamBasicDescription); // get hardware device format err = AudioUnitGetProperty( audioUnit, kAudioUnitProperty_StreamFormat, kAudioUnitScope_Input, 1, &deviceFormat, &param ); chkerr("Could not install render callback on our AudioUnit (ID=%d)"); audioChannels = MAX( deviceFormat.mChannelsPerFrame, 2 ); // Twiddle the format to our liking actualOutputFormat.mChannelsPerFrame = audioChannels; actualOutputFormat.mSampleRate = deviceFormat.mSampleRate; actualOutputFormat.mFormatID = kAudioFormatLinearPCM; actualOutputFormat.mFormatFlags = kAudioFormatFlagIsFloat | kAudioFormatFlagIsPacked | kAudioFormatFlagIsNonInterleaved; if( actualOutputFormat.mFormatID == kAudioFormatLinearPCM && audioChannels == 1 ) actualOutputFormat.mFormatFlags &= ~kLinearPCMFormatFlagIsNonInterleaved; #if __BIG_ENDIAN__ actualOutputFormat.mFormatFlags |= kAudioFormatFlagIsBigEndian; #endif actualOutputFormat.mBitsPerChannel = sizeof(Float32) * 8; actualOutputFormat.mBytesPerFrame = actualOutputFormat.mBitsPerChannel / 8; actualOutputFormat.mFramesPerPacket = 1; actualOutputFormat.mBytesPerPacket = actualOutputFormat.mBytesPerFrame; // Set the AudioOutputUnit output data format err = AudioUnitSetProperty( audioUnit, kAudioUnitProperty_StreamFormat, kAudioUnitScope_Output, 1, &actualOutputFormat, sizeof(AudioStreamBasicDescription)); chkerr("Could not change the stream format of the output device (ID=%d)"); param = sizeof(UInt32); // Get the number of frames in the IO buffer(s) err = AudioUnitGetProperty( audioUnit, kAudioDevicePropertyBufferFrameSize, kAudioUnitScope_Global, 0, &audioSamples, &param ); chkerr("Could not determine audio sample size (ID=%d)"); err = AudioUnitInitialize( audioUnit ); // Initialize the AU chkerr("Could not initialize the AudioUnit (ID=%d)"); // Allocate our audio buffers audioBuffer = [self allocateAudioBufferListWithNumChannels: actualOutputFormat.mChannelsPerFrame size: audioSamples * actualOutputFormat.mBytesPerFrame]; if( audioBuffer == NULL ) { [ self cleanUp ]; return [NSString stringWithFormat: @"Could not allocate buffers for recording (ID=%d)", err]; } return nil; } (...again, it would be nice to know if audio output is active and thereby choose the clean output stream over the noisy mic, but that would be a different chunk of code, and my main question may just be a quick edit to this chunk.) Thanks for your attention! ==Dave [p.s. if i get more than one useful answer, can i "Accept" more than one, to spread the credit around?] {pps: of course, the code lines up prettier in a monospaced font!}

I'd like to determine, definitively, if nesting of "binaries" within other "binaries" is possible with iOS. I put binaries in quotes because I've read documentation/forum posts stating things like nested frameworks isn't supported in iOS. A framework is a binary isn't it, or contains one. So does a statement such as that apply specifically and only to nested frameworks, or does it also apple to other scenarios - such as a SPM binary integrated into a framework? Here's the specific scenario I'm seeking clarity on - suppose an SDK providing an API/functionality is built as an .xcframework and that SDK contains dependencies on two other components (Firebase, AlmoFire, RealmSwift, CocoaLumberjack, whatever etc.). Lets say the SDK has two dependencies X and Y and it integrates them via SPM. Q1: If there is an app A which integrates the SDK, and A doesn't use X and Y itself, then can X and Y be embedded within the SDK and thus opague to A? Is this possible in iOS? Q2: If A integrates the SDK as above, but additionally, it itself uses X and Y independently of the SDK, then is this situation possible in iOS? Presumably in Q1 the SDK needs to embed X and Y into the framework? While presumably in Q2 it should not - because the app will be and hence that would lead to duplicate symbols and potential undefined behaviour (and therefore X and Y's SPM package spec needs to specify dynamic?) I've been trying to get a clear picture of this for literally weeks and weeks, without reaching a clear conclusion. So some definitive answer would be very much appreciated.

I just adding a way to donate my app's data to Core Spotlight using CSSearchableIndex, but I'm finding that spotlight is only searching for the title of the CSSearchableItem I create. I know the index is working, because it always finds the item through the title property, but nothing else. This is how I'm creating the CSSearchableItem: - (CSSearchableItem *) createSearchableItem { CSSearchableItemAttributeSet* attributeSet = [[CSSearchableItemAttributeSet alloc] initWithContentType: UTTypeText]; attributeSet.title = [self titleForIndex]; attributeSet.displayName = [self titleForIndex]; attributeSet.contentDescription = [self contentDescriptionForIndex]; attributeSet.thumbnailData = [self thumbnailDataForIndex]; attributeSet.textContent = [self contentDescriptionForIndex]; CSSearchableItem *item = [[CSSearchableItem alloc] initWithUniqueIdentifier: [self referenceURLString] domainIdentifier:@"com.cjournal.cjournal-Logs" attributeSet:attributeSet]; item.expirationDate = [NSDate distantFuture]; return item; } There's a lot of confusing tips around which say specifying the 'textContent' should work, and/or setting the displayName is essential, but none of these are working. Is there something I'm missing with my setup? Thanks.

Hello Apple Developer Community, I'm encountering a persistent issue while attempting to create a new partition on my Mac, and I'm hoping to get some assistance or insights from anyone who might have faced a similar problem. Issue Description: I'm trying to partition my internal drive. I initially used Disk Utility.app for this purpose. The partitioning process starts, but consistently freezes when it reaches approximately 10-20% completion. I've left it running overnight (for over 9 hours), but there was no progress, and the application remained unresponsive at that percentage. After several attempts with Disk Utility, I decided to try using the diskutil commands in Terminal to see if that would yield a different result. I used commands such as diskutil apfs resizeContainer and diskutil partitionDisk. Unfortunately, these commands also result in the same behavior: the process starts, reports progress up to about 10-20%, and then completely freezes without any further output or completion, requiring me to force-quit Terminal. Mac Model: Apple M4 Pro MacOS Version: Sequoia 15.6

Either processInfo.hostName should return the same info as UIDevice.name ("iPhone") or it should require the same entitlement that UIDevice.name does to return the actual result. If processInfo.hostName is intended to return the local Bonjour name, why does it need 'local network' permission? Why isn't the 'local network' permission documented for processInfo.hostName as this is hard to track down? Tested on iOS 18.5

I am working on an app (iOS, iPadOS & macOS (Mac Catalyst)) for a Home Automation device. I am using HomeKit APIs to access commissioned devices and provided APIs to get a MatterNodeID and then a MTRBaseDevice so I can query the device. Since the current APIs for accessing Matter devices this way do not support subscriptions I am using the readAttributes() method of the MTRBaseDevice to get information from the device. There can be significant lag time in these reads and I realize my network speed and congestion can contribute to this. The time lag makes me wonder how readAttributes() obtains the data? Does the method query the Home hub which replies using cached data, or does the hub in turn query the device to insure it is providing the latest data? I am pretty sure all this communication goes through the hub because it works whether I am on the same network as the device or in a location far, far away.

This is great for writing device drivers and somewhat fine tuning macOS for performance! And somewhat foresnical data (ie this matches that in this situation; ie kern.stack_size: 16384 vs allocating x, xy, xyz to this resource Good luck! and if you find any exploits the bug security line (and there is a bug bounty, that means they pay for exploits!) is product hyphen security at apple dot com Good luck !! unidef (also don't goto unidef.org its actually some kind of "troll" thing!) (and yeah I had a website =/)

Hello Apple Developer Support and Community, We are currently working on a project that involves developing a custom Open Directory module (ODModule) for macOS. We searched extensively for official Apple documentation on how to develop such modules. Unfortunately, we have only found the following high-level introduction: https://developer.apple.com/library/archive/releasenotes/NetworkingInternetWeb/RN_OpenDirectory/chapters/chapter-1.xhtml.html Aside from this brief overview, we have not been able to locate any detailed technical documentation that would help us understand the structure, lifecycle, APIs, or integration points of ODModules. Could you please advise: Is there any more detailed or internal documentation available regarding ODModule development? If so, is there a formal way to request access to it? We would greatly appreciate any guidance or direction you can provide. Thank you in advance! Best regards,

A few minutes back I filed a feedback assistant issue for this (FB18173706), but I am not sure I filed it in the correct category and I can't find a way to edit it either. So posting this message here just to have to assigned in the right category if appropriate. The issue is as follows. On macOS 26 Tahoe Beta, "man sw_vers" has this among other details: Previous versions of sw_vers respected the SYSTEM_VERSION_COMPAT environment variable to provide compatibility fallback versions for scripts which did not support the macOS 11.0+ version transition. This is no longer supported, versions returned by sw_vers will always reflect the real system version. It says that SYSTEM_VERSION_COMPAT is no longer supported. That doesn't look right, because running sw_vers as follows on macOS 26 Beta results in: SYSTEM_VERSION_COMPAT=1 sw_vers ProductName: macOS ProductVersion: 16.0 BuildVersion: 25A5279m i.e. setting the environment variable SYSTEM_VERSION_COMPAT=1 results in sw_vers reporting the version as 16.0. Now try with SYSTEM_VERSION_COMPAT=0, and the result is: SYSTEM_VERSION_COMPAT=0 sw_vers ProductName: macOS ProductVersion: 26.0 BuildVersion: 25A5279m notice the output says 26.0. So it appears that SYSTEM_VERSION_COMPAT is supported even on macOS 26. I think the man page requires an update to match this behaviour.

We have a seemingly randomly (and rarely) reproducible bug when a Microsoft Word (or Excel, Powerpoint...) temporary file with the ~$ prefix is not removed when the document is closed and causes a remotely deleted folder to be recreated via our file provider extension. We have received multiple issues from our users for some time now, and we could not reproduce it so far, but finally got a repro but could not identify the cause. We could reproduce it with the following steps, however not always, and only on one computer: We have the following file: FileProviderRoot/TEST/INSIDE/somefile.docx Open this file, edit with MS Word. A ~$mefile.docx hidden, temporary file is created next to the original file, while it is open in Word. This temp file is ignored by our file provider implementation by returning an .excludeFromSync error code. Save the file, modifications are synced. (don't know if this step is needed) We delete the container folder (FileProviderRoot/TEST/INSIDE) from within our app, the deletion change is propagated to the file provider, which in turn receives a call to createItem(basedOn:fields:contents:options:request:completionHandler:) that recreates the INSIDE folder, as - for some reason - the temp file cannot be deleted. Now we are stuck in this loop of delete/recreate until we go into the file provider folder and manually remove the stuck temp file. We would expect that the folder is not recreated but also removed from the file provider and disk along with the temp file. On the device that this issue was reproduced, it also seems to work correctly most of the time, but needs manual fixing when this issue occurs. We have a related bugreport: FB17928069

I am developing a FileProvider on Mac OS. I want to support Coauthoring Via Microsoft. As per Microsoft's documentation, the supportedServices function should be called via the OS when an Office file is opened. I have overridden this function in my fileprovider extension, but fail to see this function getting called. Has anyone else had any experience with coauthoring integration for File Provider and could give some advice? I am mostly working from the given documentation from Microsoft https://learn.microsoft.com/en-us/microsoft-365/cloud-storage-partner-program/plus/sync-client/metadata

I'm trying to make an FSKit module for NTFS read-write filesystem and at the stage where everything is more or less working fine as long as I mount the volume via mount -F and that volume is a RAM disk. However, since the default NTFS read-only driver is already present in macOS, this introduces an additional challenge. Judging by the DiskArbitration sources, it looks like all FSKit modules are allowed to probe anything only after all kext modules. So, in this situation, any third-party NTFS FSKit module is effectively blocked from using DiskArbitration mechanisms at all because it's always masked during the probing by the system's read-only kext. This leaves mount -F as the only means to mount the NTFS volume via FSKit. However, even that doesn't work for volumes on real (non-RAM) disks due to permission issues. The logs in Console.app hint that the FSKit extension is running; however, it looks like the fskitd itself doesn't have permissions to access real disks if it's initiated from the mount utility? default 16:42:41.939498+0200 fskitd New module list <private> default 16:42:41.939531+0200 fskitd Old modules (null) default 16:42:41.939578+0200 fskitd Added 2 identifiers: <private> default 16:42:41.939651+0200 fskitd [0x7fc58020bf00] activating connection: mach=true listener=true peer=false name=com.apple.filesystems.fskitd debug 16:42:41.939768+0200 fskitd main:RunLoopRun debug 16:42:41.939811+0200 fskitd -[liveFilesMountServiceDelegate listener:shouldAcceptNewConnection:]: start default 16:42:41.939870+0200 fskitd Incomming connection, entitled 0 debug 16:42:41.940021+0200 fskitd -[liveFilesMountServiceDelegate listener:shouldAcceptNewConnection:]: accepting connection default 16:42:41.940048+0200 fskitd [0x7fc580006120] activating connection: mach=false listener=false peer=true name=com.apple.filesystems.fskitd.peer[1816].0x7fc580006120 default 16:42:41.940325+0200 fskitd Hello FSClient! entitlement no default 16:42:41.940977+0200 fskitd About to get current agent for 503 default 16:42:41.941104+0200 fskitd [0x7fc580015480] activating connection: mach=true listener=false peer=false name=com.apple.fskit.fskit_agent info 16:42:41.941227+0200 fskitd About to call to fskit_agent debug 16:42:42.004630+0200 fskitd -[fskitdAgentManager currentExtensionForShortName:auditToken:replyHandler:]_block_invoke: Found extension for fsShortName (<private>) info 16:42:42.005409+0200 fskitd Probe starting on <private> debug 16:42:42.005480+0200 fskitd -[FSResourceManager getResourceState:]:not_found:<private> debug 16:42:42.005528+0200 fskitd -[FSResourceManager addTaskUUID:resource:]:<private>: Adding task (<private>) debug 16:42:42.005583+0200 fskitd applyResource starting with resource <private> kind 1 default 16:42:42.005609+0200 fskitd About to get current agent for 503 info 16:42:42.005629+0200 fskitd About to call to fskit_agent debug 16:42:42.006700+0200 fskitd -[fskitdXPCServer getExtensionModuleFromID:forToken:]_block_invoke: Found extension <private>, attrs <private> default 16:42:42.006829+0200 fskitd About to get current agent for 503 info 16:42:42.006858+0200 fskitd About to call to fskit_agent, bundle ID <private>, instanceUUID <private> default 16:42:42.070923+0200 fskitd About to grab assertion on pid 1820 default 16:42:42.071058+0200 fskitd Initializing connection default 16:42:42.071141+0200 fskitd Removing all cached process handles default 16:42:42.071185+0200 fskitd Sending handshake request attempt #1 to server default 16:42:42.071223+0200 fskitd Creating connection to com.apple.runningboard info 16:42:42.071224+0200 fskitd Acquiring assertion: <RBSAssertionDescriptor| "com.apple.extension.session" ID:(null) target:1820> default 16:42:42.071258+0200 fskitd [0x7fc58001cdc0] activating connection: mach=true listener=false peer=false name=com.apple.runningboard default 16:42:42.075617+0200 fskitd Handshake succeeded default 16:42:42.075660+0200 fskitd Identity resolved as osservice<com.apple.filesystems.fskitd> debug 16:42:42.076337+0200 fskitd Adding assertion 183-1817-1669 to dictionary debug 16:42:42.076385+0200 fskitd +[FSBlockDeviceResource(Project) openWithBSDName:writable:auditToken:replyHandler:]:bsdName:<private> default 16:42:42.076457+0200 fskitd [0x7fc5801092e0] activating connection: mach=true listener=false peer=false name=com.apple.fskit.fskit_helper default 16:42:42.077706+0200 fskitd +[FSBlockDeviceResource(Project) openWithBSDName:writable:auditToken:replyHandler:]_block_invoke: Open device returned error Error Domain=NSPOSIXErrorDomain Code=13 info 16:42:42.077760+0200 fskitd +[FSBlockDeviceResource(Project) openWithBSDName:writable:auditToken:replyHandler:]: failed to open device <private>, Error Domain=NSPOSIXErrorDomain Code=13 default 16:42:42.077805+0200 fskitd [0x7fc5801092e0] invalidated because the current process cancelled the connection by calling xpc_connection_cancel() debug 16:42:42.077830+0200 fskitd +[FSBlockDeviceResource(Project) openWithBSDName:writable:auditToken:replyHandler:]:end info 16:42:42.078459+0200 fskitd openWith returned err Error Domain=NSPOSIXErrorDomain Code=13 dev (null) error 16:42:42.078501+0200 fskitd -[fskitdXPCServer getRealResource:auditToken:reply:]: Unable to convert proxy FSBlockDeviceResource into open resource error 16:42:42.078538+0200 fskitd -[fskitdXPCServer applyResource:targetBundle:instanceID:initiatorAuditToken:authorizingAuditToken:isProbe:usingBlock:]: Can't get the real resource of <private> default 16:42:42.105443+0200 fskitd [0x7fc580006120] invalidated because the client process (pid 1816) either cancelled the connection or exited The mount utility call I use is the same for RAM and real disks with the only difference being the device argument and this permission error is only relevant for real disks case. So, the proper solution (using DiskArbitration) seems to be blocked architecturally in this use case due to FSKit modules being relegated to the fallback role. Is this subject to change in the future? The remaining workaround with using the mount directly doesn't work for unclear reasons. Is that permission error a bug? Or am I missing something?

Hello, I'm working on a iOS project, and I added a setup precedure to save and load configuration files during the app's initialization process. However, I can't find my files in my iPhone test while it's Ok on my Mac. How can I retrieve them? Thanks

I see this in Tahoe Beta release notes macOS now supports the Apple Sparse Image Format (ASIF). These space-efficient images can be created with the diskutil image command-line tool or the Disk Utility application and are suitable for various uses, including as a backing store for virtual machines storage via the Virtualization framework. See VZDiskImageStorageDeviceAttachment. (152040832) I'm developing a macOS app using the Virtualization framework and need to create disk images in the ASIF (Apple Sparse Image Format) to make use of the new feature in Tahoe Is there an official way to create/resize ASIF images programmatically using Swift? I couldn’t find any public API that supports this directly. Any guidance or recommendations would be appreciated. Thanks!

Hello, I am working on a application that connects to a peripheral using AccessorySetupKit. Peripheral is currently advertising it's custom service UUID. With this setup I am able to discover and connect to the device without issues. Firmware team wants to introduce a change and add a "manufacturer data" to the advertisment for better recognition. Upon testing with iOS app, it turns out that current code breaks and does not discover the device anymore. I am unable to configure AccessorySetupKit to be able to discover the device when it has both service uuid and manufacturer data in advertisment. Removing the newly added manufacturer data "fixes" the issue and app is able to discover peripherals again. Looking at the documentation of ASDiscoveryDescriptor it does not specify that those are mutually excluding fields nor does it provide any insight how the configured fields are evaluated against each other. Is this a bug in AccessorySetupKit? Is there a way to update the descriptor in a way that application will still be able to discover the peripheral if only service UUID is provided? Thanks in advance

Hello everyone, I'm developing a macOS application that programmatically sets custom icons for folders, and I've hit a wall trying to get Finder to display the icon changes consistently. The Goal: To change a folder's icon using NSWorkspace.shared.setIcon and have Finder immediately show the new icon. What I've Tried (The Refresh Mechanism): After setting the icon, I attempt to force a Finder refresh using several sandbox-friendly techniques: Updating the Modification Date (the "touch" method): try FileManager.default.setAttributes([.modificationDate: Date()], ofItemAtPath: pathToUse) Notifying NSWorkspace: NSWorkspace.shared.noteFileSystemChanged(pathToUse) Posting Distributed Notifications: DistributedNotificationCenter.default().post(name: Notification.Name("com.apple.Finder.FolderChanged"), object: pathToUse) The Problem: This combination of methods works perfectly, but only under specific conditions: When setting a custom icon on a folder for the first time. When changing the icon of an alias. For any subsequent icon change on a regular folder, Finder stubbornly displays the old, cached icon. I've confirmed that the user can see the new icon by manually closing and reopening the folder window, but this is obviously not a user-friendly solution. Investigating a Reset with AppleScript: I've noticed that the AppleScript update command seems to force the kind of complete refresh I need: tell application "Finder" update POSIX file "/path/to/your/folder" end tell Running this seems to reset the folder's state in Finder, effectively recreating the "first-time set" scenario where my other methods work. However, the major roadblock is that I can't figure out how to reliably execute this from a sandboxed environment. I understand it likely requires specific scripting entitlements, but it's unclear which ones would be needed for this update command on a user-chosen folder, or if it's even permissible for the App Store. My Questions: Is there a reliable, sandbox-safe way to make the standard Cocoa methods (noteFileSystemChanged, updating the modification date, etc.) work for subsequent icon updates on regular folders? Am I missing a step? If not, what is the correct way to configure a sandboxed app's entitlements to safely run the tell application "Finder" to update command for a folder the user has granted access to? Any insight or alternative approaches would be greatly appreciated. Thank you

Hello, I want to create a Launch Agent that triggers an executable upon changes in the /Applications folder. The launch agent is normally a loaded but not running, and by adding /Applications to the WatchPath parameters in the plist, launchd is supposed to trigger the process, that will run and exit once done. Sadly this seems not to be working uniformly. The script only works on one machine, in the the others the execcutable is never run. There seem not to be any meaningful differences in the launchd or system logs. The same identical plist works perfectly when changing something in the user's ~/Applications folder. The script does its job and logs are visible. Is there an undocumented limitation specifically for the /Applications folder that prevents luanchd to observe it in the WatchPaths? Maybe SIP not allowing access? But why does it work on my machine? Here is an example of the ~/Library/LaunchAgents/com.company.AppName.LaunchAgent.plist: &lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"&gt; &lt;plist version="1.0"&gt; &lt;dict&gt; &lt;key&gt;AssociatedBundleIdentifiers&lt;/key&gt; &lt;string&gt;com.company.AppName&lt;/string&gt; &lt;key&gt;KeepAlive&lt;/key&gt; &lt;false/&gt; &lt;key&gt;Label&lt;/key&gt; &lt;string&gt;com.company.AppName.LaunchAgent&lt;/string&gt; &lt;key&gt;ProgramArguments&lt;/key&gt; &lt;array&gt; &lt;string&gt;/Users/username/Library/Application Support/com.company.AppName/Launch Agent.app/Contents/MacOS/LaunchAgent&lt;/string&gt; &lt;/array&gt; &lt;key&gt;RunAtLoad&lt;/key&gt; &lt;false/&gt; &lt;key&gt;WatchPaths&lt;/key&gt; &lt;array&gt; &lt;string&gt;/Users/username/Applications&lt;/string&gt; &lt;string&gt;/Applications&lt;/string&gt; &lt;string&gt;/Network/Applications&lt;/string&gt; &lt;/array&gt; &lt;/dict&gt; &lt;/plist&gt; With the executable being a standard app bundle in /Users/username/Library/Application Support/com.company.AppName/Launch Agent.app Thank you

I'm very unpleased to have found out the hard way, that vDSP.FFT&amp;lt;T&amp;gt; where T : vDSP_FourierTransformable and its associated vDSP_FourierTransformFunctions, only does real-complex conversion!!! This is horribly misleading - the only hint that it calls vDSP_fft_zrop() (split-complex real-complex out-of-place) under the hood, not vDSP_fft_zop()[1], is "A 1D single- and double-precision fast Fourier transform." - instead of "a single- and double-precision complex fast Fourier transform". Holy ******* ****. Just look at how people miss-call this routine. Poor him, realizing he had to log2n+1 lest only the first half of the array was transformed, not understanding why [2]. And poor me, having taken days investigating why a simple Swift overlay vDSP.FFT.transform may execute at 1.4x the speed of vDSP_fft_zopt(out-of-place with temporary buffer)! [3] [1]: or better, vDSP_fft_zopt with the temp buffer alloc/dealloc taken care of, for us [2]: for real-complex conversion, say real signal of length 16. log2n is 4 no problem, but then the real and imaginary vectors are both length 8. Also, vDSP_fft only works on integer powers of 2, so he had to choose next integer power of 2 (i.e. 1&amp;lt;&amp;lt;(log2n-1)) instead of plain length for his internal arrays. [3]: you guessed it. fft_zrop(log2n-1, ...) vs. fft_zop(log2n, ...). Half the problem size lol. Now we have vDSP.DiscreteFourierTransform, which wraps vDSP_DFT routines and "calls FFT routines when the size allows it", and works too for interleaved complexes. Just go all DFT, right? if let setup_f = try? vDSP.DiscreteFourierTransform(previous: nil, count: 8, direction: .forward, transformType: .complexComplex, ofType: DSPComplex.self) { // Done forward transformation // and scaled the results with 1/N // How about going reverse? if let setup_r = try? vDSP.DiscreteFourierTransform(previous: setup_f, count: 8, direction: .inverse, transformType: .complexComplex, ofType: DSPComplex.self) { // Error: cannot convert vDSP.DiscreteFourierTransform&amp;lt;DSPComplex&amp;gt; to vDSP.DiscreteFourierTransform&amp;lt;Float&amp;gt; // lolz } } This API appeared in macOS 12. 3 years later nobody have ever noticed. I'm at a loss for words.

I am developing an Apple app that has to download 1000s of MP4 files between 5 and 150MB each at one time (can take an hour or more - is OK). I use Apple's file picker to select the files, and then it freezes and I cannot download anything. I had this working a few months ago but now I cannot get it to work. Can someone give me some advice please?

Some background: We are developing an app that needs to scan NFC tags We are following this documentation for our app We (assume) we've gotten all the correct entitlements for our app Our app correctly shows the NFC scanning prompt We are using up-to-date iPhones to test We tested scanning using a different NFC app on the app store and were able to successfully scan the tag We're using NFC NDEF tags to test The problem: Nothing is being detected in the scan Nothing in the example application when we downloaded it down and loaded it onto a test device (reminder that the app from the app store was able to read our tag) When connected to the debugger, our delegate function is not firing (tested with breakpoints and print statements). The following is the signature of our delegate function: func readerSession(_ session: NFCNDEFReaderSession, didDetectNDEFs messages: [NFCNDEFMessage]) Is there something that we're missing to get the NFC scanning to work? Perhaps some kind of entitlement? If anyone has any ideas or paths to follow that'd be greatly appreciated. Thanks!