I have an app that displays artwork via MPMediaItem.artwork, requesting an image with a specific size. How do I get a media item's MPMediaItemAnimatedArtwork, and how to get the preview image and video to display to the user?
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I have recently submitted a new app version to the Appstore with Xcode 15.0. Unfortunately, I have started to see the below crash in the Xcode organiser > Crashes section occurring for more number of times.
UIKitCore: +[UIAlertController _alertControllerContainedInViewController:] + 160
The exception trace is not leading to main() function but not pointing to any of the code line. I had used UIAlertController in the past versions to show the alerts but there is no code written in the current version code related to UIAlertController. Only from the latest version, this kind of crash started to surface.
In the latest release, We have added a third party SDK and while implementing the SDK, we had added the Location and Bluetooth Permissions in Info.plist file. But as we don't want to use/track the Location and Bluetooth details from the app, the SDK team has disabled the Location and Bluetooth settings to not reflect in the tracked data.
Is this behaviour creating any conflict with the UIAlertController and logging the crash? Because by default the OS tries to show the alert when the permissions exist in the plist file, but the alert will not come as the service is disabled on the SDK server settings. Is this creating any conflict and logging the crash.
Please extend your help.
Hi,
On iOS, I'd like to mark views that are inside a LazyVStack as headers for VoiceOver (make them appear in the headings rotor).
In a VStack, you just have add .accessibilityAddTraits(.isHeader) to your header view. However, if your view is in a LazyVStack, that won't work if the view is not visible. As its name implies, LazyVStack is lazy so that makes sense.
There is very little information online about system rotors, but it seems you are supposed to use .accessibilityRotor() with the headings system rotor (.accessibilityRotor(.headings)) outside of the LazyVStack. Something like the following.
.accessibilityRotor(.headings) {
ForEach(entries) { entry in
// entry.id must be the same as the id of the SwiftUI view it is about
AccessibilityRotorEntry(entry.name, id: entry.id)
}
}
It kinds of work, but only kind of. When using .accessibilityAddTraits(.isHeader) in a VStack, the view is in the headings rotor as soon as you change screen. However, when using .accessibilityRotor(.headings), the headers (headings?) are not in the headings rotor at the time the screen appears. You have to move the accessibility focus inside the screen before your headers show up.
I'm a beginner in regards to VoiceOver, so I don't know how a blind user used to VoiceOver would perceive this, but it feels to me that having to move the focus before the headers are in the headings rotor would mean some users would miss them.
So my question is: is there a way to have headers inside a LazyVStack (and are not necessarily visible at first) to be in the headings rotor as soon as the screen appears? (be it using .accessibilityRotor(.headings) or anything else)
The "SwiftUI Accessibility: Beyond the basics" talk from WWDC 2021 mentions custom rotors, not system rotors, but that should be close enough. It mentions that for accessibilityRotor to work properly it has to be applied on an accessibility container, so just in case I tried to move my .accessibilityRotor(.headings) to multiple places, with and without the accessibilityElement(children: .contain) modifier, but that did not seem to change the behavior (and I could not understand why accessibilityRotor could not automatically make the view it is applied on an accessibility container if needed).
Also, a related question: when using .accessibilityRotor(.headings) on a screen, is it fine to mix uses of .accessibilityRotor(.headings) and .accessibilityRotor(.headings)? In a screen with multiple type of contents (something like ScrollView { VStack { MyHeader(); LazyVStack { /* some content */ }; LazyVStack { /* something else */ } } }), having to declare all headers in one place would make code reusability harder.
Thanks
When you click the button in the background of three horizontal lines, when the view is about to appear, add buried event statistics, but click the button to close it, it will repeat the view will appear method API, equivalent to the view method repeated execution twice, resulting in incorrect buried event statistics
Hi Apple developer community. I have a question a lot of users don’t like the new control center and notification center. Are you guys gonna blur the background or are you guys gonna keep it the same?
Hello!
I'm trying to set a UiRefreshControl.tintColor:
.onAppear {
UIRefreshControl.appearance().tintColor = UIColor.systemBlue
}
But instead of
I get
The color in the second picture is a high contrast version of the first one. I can't understand why it works this way.
I also tried the following.
UIRefreshControl.appearance().tintColor = UIColor(red: 0, green: 0.478, blue: 1, alpha: 1) // doesn't work
UIRefreshControl.appearance().tintColor = UIColor(named: "RefreshControlColor") // doesn't work, here set "High contrast" on and indicated Universal.systemBlueColor
Perhaps I missed something?
I have an older Macbook, and it only supports Xcode 15.2, and I want to be able to work with my iPhone SE 3rd gen, which currently has the iOS 26 beta on it. Is there a place I can find the download for that, and can I even run it on that version of Xcode? If not, can I download a newer version of Xcode on MacOS Ventura?
Hi,
I got a problem with severe hangs when I use code like this on tvOS 18.2
If I try to use HStack instead of LazyHStack inside the scrollview then the problem does not occur any more but then the scroll performance is compromised and the vertical scroll is no longer that smooth. Does someone has any experience with this? Is this SwiftUI problem or am I missing something?
ScrollView {
LazyVStack {
ForEach(0...100, id: \.self) { _ in
ScrollView {
LazyHStack {
ForEach(0...20, id: \.self) { _ in
Color.red.frame(height: 300)
}
}
}
}
}
}
Hello,
We're seeing an intermittent issue when playing back FairPlay-protected HLS downloads while the device is offline.
Assets are downloaded using AVAggregateAssetDownloadTask with FairPlay protection.
After download, asset.assetCache.isPlayableOffline == true.
On first playback attempt (offline), ~8% of downloads fail.
Retrying playback always works. We recreate the asset and player on each attempt.
During the playback setup, we try to load variants via:
try await asset.load(.variants)
This call sometimes fails with:
Error Domain=NSURLErrorDomain Code=-1009 “The Internet connection appears to be offline.” UserInfo={NSUnderlyingError=0x105654a00 {Error Domain=NSURLErrorDomain Code=-1009 “The Internet connection appears to be offline.” UserInfo={NSDescription=The Internet connection appears to be offline.}}, NSErrorFailingURLStringKey=file:///private/var/mobile/Containers/Data/Application/2DDF9D7C-9197-46BE-8690-C23EE75C9E90/Library/com.apple.UserManagedAssets.XVvqfh/Baggage_9DD4E2D3F9C0E68F.movpkg/, NSErrorFailingURLKey=file:///private/var/mobile/Containers/Data/Application/2DDF9D7C-9197-46BE-8690-C23EE75C9E90/Library/com.apple.UserManagedAssets.XVvqfh/Baggage_9DD4E2D3F9C0E68F.movpkg/, NSURL=file:///private/var/mobile/Containers/Data/Application/2DDF9D7C-9197-46BE-8690-C23EE75C9E90/Library/com.apple.UserManagedAssets.XVvqfh/Baggage_9DD4E2D3F9C0E68F.movpkg/, AVErrorFailedDependenciesKey=(
“assetProperty_HLSAlternates”
), NSLocalizedDescription=The Internet connection appears to be offline.}
This variant load is used to determine available audio tracks, check for Dolby support, and apply user language preferences.
After this step, the AVPlayerItem also fails via Combine’s publisher for .status.
However, retrying the entire process immediately after (same offline conditions, same asset path, new AVURLAsset) results in successful playback.
Assets are represented using the following class:
public class DownloadedAsset: AVURLAsset {
public let id: String
public let localFileUrl: URL
public let fairplayLicenseUrlString: String?
public let drmToken: String?
var isProtected: Bool {
return fairplayLicenseUrlString != nil
}
public init(id: String,
localFileUrl: URL,
fairplayLicenseUrlString: String?,
drmToken: String?) {
self.id = id
self.localFileUrl = localFileUrl
self.fairplayLicenseUrlString = fairplayLicenseUrlString
self.drmToken = drmToken
super.init(url: localFileUrl, options: nil)
}
}
We use user-selected quality levels to control bitrate and multichannel (e.g. Dolby 5.1) downloads:
let downloadQuality = UserDefaults.standard.downloadVideoQuality
let bitrate: Int
let shouldDownloadMultichannelTracks: Bool
switch downloadQuality {
case .dataSaver:
shouldDownloadMultichannelTracks = false
bitrate = 596564
case .standard:
shouldDownloadMultichannelTracks = false
bitrate = 1503844
case .best:
shouldDownloadMultichannelTracks = true
bitrate = 7038970
}
var selections = multichannelIdentifiedMediaSelections
if !shouldDownloadMultichannelTracks {
selections = selections.filter { !$0.isMultichannel }
}
let task = session.aggregateAssetDownloadTask(
with: asset,
mediaSelections: selections.map { $0.mediaSelection },
assetTitle: title,
assetArtworkData: nil,
options: [AVAssetDownloadTaskMinimumRequiredMediaBitrateKey: bitrate]
)
Seen on devices running iOS 16, iOS 17, and iOS 18.
What could cause the initial failure of an otherwise valid, offline-ready FairPlay HLS asset?
Could .load(.variants) internally trigger a failed network resolution, even when offline?
Is there an internal caching or initialization behavior in AVFoundation that might explain why the second attempt works?
Any guidance would be appreciated.
Topic:
Media Technologies
SubTopic:
Streaming
Tags:
FairPlay Streaming
iOS
HTTP Live Streaming
AVFoundation
Connection is getting broken while moving from background to foreground in latest iOS 18.3.is there any change regarding background activity?
Hello,
I am currently attempting to use declarative management to install enterprise application, however I am running into errors. Initially the device was failing to unpac the initial manifest it downloaded. After pulling logs from the device it was revealed that the manifest must include the bundle-version for it to parse as valid.
Adding this has allowed for the ipa to be fetched from the server however there is a secondary issue. The application is on the device but is unable to be opened due to the device being unable to validate its integreti. Any additional information would be useful. For completion the working manifest will be pasted below.
It should be noted that the manifest below does work when requesting application installs through MDM commands.
<***>
<items type="array">
<dict>
<assets type="array">
<dict>
<kind type="string">software-package</kind>
<url type="string">https://domain/web/mdm/ios/enterpriseipa/bundle.id</url>
</dict>
</assets>
<key type="dict" name="metadata">
<bundle-identifier type="string">bundle.id</bundle-identifier>
<kind type="string">software</kind>
<subtitle type="string">app</subtitle>
<title type="string">app</title>
<bundle-version type="string">x.x.x</bundle-version>
</key>
</dict>
</items>
</***>
</plist>
I'd like to set up a communication mechanism between the Ui test runner and my iOS app. The purpose is to be able to collect some custom performance metrics in addition to standard ones like scrollingAndDecelerationMetric. Let's say we measure some specific intervals in our code using signposts, then serialize the result into a structured payload and report it back to the runner.
So, are there any good options for that kind of IPC?
The primary concern is running on Simulator. However, since it is not a regular UI test but more a performance UI test, and it is usually recommended to run those on a real device, with release optimizations/flags in place, I wonder if it is feasible to have it for device too.
It’s very annoying but on my iPhone 12 Pro I keep getting the accessibility app with the microphone on and it keeps opening the app by itself and it’s a blank screen and every time I close it it just reopens. I don’t know why it keeps doing this, but it drives me crazy. Does anyone know what else to do? I also have the beta iOS 26 but it’s been doing this even with the past update.
Hello, why is apple won’t adding Just-In-Time compiler to ”Emulators” in the app store. And/or hypervisor for newer devices.
i feel like UTM (which is a PC Emulator) or other Apps that emulate need JIT to work properly, and will consume significantly less battery to emulate/virtualize, And will have a noticeably better performance than just not enabling JIT, and by the way jit is already being used on iPadOS/iOS 18.3/18.3.1 and newer/older version of that so being enabled by the choice of the developer of the App is more convenient than doing it with tools.
and by the why apple wont let emulators on iPads and newer iPhones do hypervisor, it’s better than JIT but requires a good cpu, like making it available to people with newer/powerful devices, hypervisor is better than JIT by a lot and removing it in iPadOS/iOS 18.4 was an unnecessary choice?, becuase it had a better potential in virtualization instead of emulating, and I feel like enabling it In M1-M2 iPads and A14-18pro and newer devices is just better from having it disabled, to unlock the fullest potential of the iPad it needs to have a app or something to do instead of just running high graphics games/or Apps.
I am working on an iOS app using Flutter that tracks outgoing calls using CallKit. The call tracking functionality works perfectly in Debug mode but does not work when the app is published to TestFlight.
I have already added Background Modes (voip, audio, processing, fetch) in Info.plist. I have added CallKit.framework in Xcode under Link Binary With Libraries (set to Optional).
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>aps-environment</key>
<string>production</string>
</dict>
</plist>
These are the necessary permission which I used in info.plist:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>BGTaskSchedulerPermittedIdentifiers</key>
<array>
<string>com.agent.mygenie</string>
</array>
<key>CADisableMinimumFrameDurationOnPhone</key>
<true/>
<key>CFBundleDevelopmentRegion</key>
<string>$(DEVELOPMENT_LANGUAGE)</string>
<key>CFBundleDisplayName</key>
<string>MyGenie</string>
<key>CFBundleDocumentTypes</key>
<array/>
<key>CFBundleExecutable</key>
<string>$(EXECUTABLE_NAME)</string>
<key>CFBundleIdentifier</key>
<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
<key>CFBundleInfoDictionaryVersion</key>
<string>6.0</string>
<key>CFBundleName</key>
<string>mygenie</string>
<key>CFBundlePackageType</key>
<string>APPL</string>
<key>CFBundleShortVersionString</key>
<string>$(FLUTTER_BUILD_NAME)</string>
<key>CFBundleSignature</key>
<string>????</string>
<key>CFBundleVersion</key>
<string>$(FLUTTER_BUILD_NUMBER)</string>
<key>LSRequiresIPhoneOS</key>
<true/>
<key>NSCallKitUsageDescription</key>
<string>This app needs access to CallKit for call handling</string>
<key>NSContactsUsageDescription</key>
<string>This app needs access to your contacts for calls</string>
<key>NSMicrophoneUsageDescription</key>
<string>This app needs access to microphone for calls</string>
<key>NSPhotoLibraryUsageDescription</key>
<string>This app needs access to photo library for profile picture updation</string>
<key>UIApplicationSupportsIndirectInputEvents</key>
<true/>
<key>UIBackgroundModes</key>
<array>
<string>voip</string>
<string>processing</string>
<string>fetch</string>
<string>audio</string>
</array>
<key>UILaunchStoryboardName</key>
<string>LaunchScreen</string>
<key>UIMainStoryboardFile</key>
<string>Main</string>
<key>UISupportedInterfaceOrientations</key>
<array>
<string>UIInterfaceOrientationPortrait</string>
<string>UIInterfaceOrientationLandscapeLeft</string>
<string>UIInterfaceOrientationLandscapeRight</string>
</array>
<key>UISupportedInterfaceOrientations~ipad</key>
<array>
<string>UIInterfaceOrientationPortrait</string>
<string>UIInterfaceOrientationPortraitUpsideDown</string>
<string>UIInterfaceOrientationLandscapeLeft</string>
<string>UIInterfaceOrientationLandscapeRight</string>
</array>
[code.txt](https://developer.apple.com/forums/content/attachment/0a327dbd-652e-41d5-8811-c462d09e0567)
</dict>
</plist>
And below is the file are AppDelegate.swift, call_tracking_mixin.dart, & main_call.dart file for full knowledge
Hello,
I would like to ask if there is any possibility to invoke the Apple Sysdiagnose via an API call. I cannot find any API reference for Sysdiagnose.
I am aware only about the manually invocation. https://it-training.apple.com/tutorials/support/sup075/
However, this is pretty annoying since a reproduction of a hunted bug takes several hours, so I am looking for the way how to invoke Sysdiagnose from our code.
I have filed a bug report for this (FB17734946), but I'm posting it here verbatim in case others have the same issue and in hopes of getting attention from an Apple engineer sooner.
When calling setNeedsDisplayInRect on a CATiledLayer - or a UIView whose backing layer is CATiledLayer - one would expect to re-draw only a region identified by the rect passed to the method. This is even written in the documentation for the class:
"Regions of the layer may be invalidated using the setNeedsDisplayInRect: method however the update will be asynchronous. While the next display update will most likely not contain the updated content, a future update will."
However, upon calling this method, CATiledLayer redraws whole contents instead of just the tile at the specified rect, and it flashes when doing so. It behaves exactly the same as if one had called setNeedsDisplay without passing any rect; all contents are cleared and re-drawn again. I'm 100% sure I've passed in the correct rect of the exact tile that I need to redraw. I have even tried passing much smaller rects, but still the same. (And yes, the rect I've passed accounts for the current level of detail.)
I have found this GitHub repo https://github.com/frankus/NetPhotoScroller, which based on discussion from here https://forums.macrumors.com/threads/catiledlayer-blanks-out-tiles-when-redrawing.1333948/ aims at solving these issues by using two private methods on CATiledLayer class:
(void)setNeedsDisplayInRect:(CGRect)r levelOfDetail:(int)level;
(BOOL)canDrawRect:(CGRect)rect levelOfDetail:(int)level;
I have explored the repo in detail, however I wasn't able to test exactly this code from the GitHub repo. I have tried using those two private methods myself (through an Objective-C class that defines the methods in the header file and then a swift class which inherits it), but I couldn't solve the issue; the flashing and the full re-draw is still there.
After doing a lot of research, the conclusion seems to be that one cannot use CATiledLayer with contents that are downloaded remotely, on demand, as tiles are being requested.
I have, however, found one interesting thing which seems to work so far: before calling setNeedsDisplayInRect (or just setNeedsDisplay, as they behave the same for CATiledLayer in my testing), cache the current layer's contents, and after calling setNeedsDisplay (or setNeedsDisplayInRect), restore the contents back to the layer. This prevents flashing and preserves any tiles that were drawn at the time of the re-draw.
let c = tiledLayer.contents
tiledLayer.setNeedsDisplay(tileRect)
tiledLayer.contents = c
However! Docs clearly state the warning:
Do not attempt to directly modify the contents property of a CATiledLayer object. Doing so disables the ability of a tiled layer to asynchronously provide tiled content, effectively turning the layer into a regular CALayer object.
I believe this message implies modifying the contents property with some raw content, like image data, and that it may be safe to re-apply the existing contents (which are in my testing of type CAImageProvider) -- but I can't rely on an implementation detail in my production app.
I have tested this and confirmed that the bug appears on:
iPhone 14 Pro, iOS 18.5
iPhone 13 Pro, iOS 17.5.1
iPhone 5s, iOS 15.8.3
iPad Pro 1st gen, iPadOS 18.4.1
a couple simulator versions
I can also confirm that the fix (to re-apply contents property) is also working properly on all these versions.
Is this expected behavior, that tiled layer redraws itself entirely instead of redrawing specific tiles?
Is it safe to modify contents of a CATiledLayer by re-applying the existing contents?
If not, is there an alternative to avoid flashing?
De officiële Syrische vlag met twee sterren is vervangen door de huidige Syrische vlag met drie sterren, wetende dat geen enkel land ter wereld de vlag van het land vervangt zonder deze in de grondwet van het land op te nemen.
Daarom is het beter om de Syrische vlag met twee sterren te behouden in de volgende iOS 18.4-release, of beide vlaggen samen te voegen, omdat de meeste Syriërs niet de voorkeur geven aan de vlag met drie sterren.
Hi there,
can some one help how to debug this crashes? where I can start to find root causes of this crashes. I've got lot of these NSInvalidArgumentException crashes in myapp last version
I have no idea how to reproduce these issues since it doesn't point to any specific code on myapp, so I don't know how to start
Fatal Exception: NSInvalidArgumentException
-[NWConcrete_nw_protocol_options copyWithZone:]: unrecognized selector sent to instance 0x283391d60
Fatal Exception: NSInvalidArgumentException
-[NSConcreteHashTable lengthOfBytesUsingEncoding:]: unrecognized selector sent to instance 0x281d4cbe0
Fatal Exception: NSInvalidArgumentException
-[_NSXPCConnectionExportedObjectTable lengthOfBytesUsingEncoding:]: unrecognized selector sent to instance 0x2829d11d0
Fatal Exception: NSInvalidArgumentException
-[OS_dispatch_group lengthOfBytesUsingEncoding:]: unrecognized selector sent to instance 0x281a11900
Fatal Exception: NSInvalidArgumentException
-[__NSCFData getBytes:maxLength:usedLength:encoding:options:range:remainingRange:]: unrecognized selector sent to instance 0x28210e440
Fatal Exception: NSInvalidArgumentException
-[_NSCoreTypesetterLayoutCache copyWithZone:]: unrecognized selector sent to instance 0x283bbc730
Thanks
com.kitabisa.ios_issue_dd3c71c96cddb5bb99874640746439d6_crash_session_de9bb41c2b7e43fa9ccfc42e0f649aa3_DNE_0_v2_stacktrace.txt
I want to build an ios .xcframework (for external delivery) and .framework(for internal debugging) in order to package some code to a customer for incorporation into their app.
My framework has a dependency upon RealmSwift, which I've added using SPM.
There is a warning saying
Module RealmSwift was not compiled with library evolution support.
And when building SwiftVerifyEmittedModuleInterface fails with an error saying
"missing required modules: 'Realm.Private', 'Realm', 'Realm.Swift'"
By default, Build Libraries For Distribution was set to YES, however if I turn it off then the warning and error go away and I can cleanly build the framework.
I've been attempting to get a good understanding of this flag and if it should be used or not, most material says yes but doesn't go a good job of explaining why.
However anyway I can't get the framework to build with RealmSwift as a dependency without turning off this flag. Therefore is that ok to proceed down that route?
Does the fact the xcframework will only ever be distributed to one consumer affect decisions (i.e. binary compatibility etc.)
Thanks