Hi!I hope someone can help me.A user told me that my app crashes when scrolling a tableView on iOS 13.1.2.I received the crash log and the error it’s just crazy.The crash log indicate that the error is at the first line inside the trailingSwipeActionsConfigurationForRowAt method.override func tableView(_ tableView: UITableView, trailingSwipeActionsConfigurationForRowAt indexPath: IndexPath) -> UISwipeActionsConfiguration? { guard items.count > indexPath.row else {return nil} //This line crash. … }The items property is defined as:private var items = [AnyObject]()The error is EXC_BREAKPOINT (SIGTRAP).How can this line of code crash? items is a non optional variable and indexPath is also a non optional struct.It's as if indexPath.row was deliberately creating an EXC_BREAKPOINT exception. It is possible?Another strange thing is that the user say that the app crash during scrolling. It seems that the method trailingSwipeActionsConfigurationForRowAt is called during scroll. That's also strange, it should not be called only when the user does a left swipe? Maybe it has something to do with some accessibility feature because in the call stack of crash report I see some system accessibility methods calls (see crash report below).Has anyone any ideas that can help me or has encountered a similar problem?Thank youException Type: EXC_BREAKPOINT (SIGTRAP) Exception Codes: 0x0000000000000001, 0x00000001de522a94 Termination Signal: Trace/BPT trap: 5 Termination Reason: Namespace SIGNAL, Code 0x5 Terminating Process: exc handler [1431] Triggered by Thread: 0 Thread 0 name: Thread 0 Crashed: 0 libswiftUIKit.dylib 0x00000001de522a94 $s10Foundation9IndexPathV5UIKitE7sectionSivgTm + 52 1 libswiftUIKit.dylib 0x00000001de522a78 $s10Foundation9IndexPathV5UIKitE7sectionSivgTm + 24 2 MYAPP 0x000000010219ca4c specialized GroupTableViewController.tableView(_:trailingSwipeActionsConfigurationForRowAt:) + 272 (GroupTableViewController.swift:714) 3 MYAPP 0x0000000102194544 @objc GroupTableViewController.tableView(_:trailingSwipeActionsConfigurationForRowAt:) + 136 (:0) 4 UIKitCore 0x00000001ad6ae200 -[UITableView _trailingSwipeConfigurationAtIndexPath:fromRemoveButton:] + 2140 (UITableView.m:16580) 5 UIKit 0x00000001de7889f0 -[UITableViewCellAccessibility _privateAccessibilityCustomActions] + 544 (UITableViewCellAccessibility.m:3153) 6 UIAccessibility 0x00000001b49e6228 -[NSObject(AXPrivCategory) _retrieveCustomActionsForElement:] + 72 (NSObjectAccessibility.m:2973) 7 UIAccessibility 0x00000001b49e650c -[NSObject(AXPrivCategory) _accessibilityCustomActions] + 260 (NSObjectAccessibility.m:3021) 8 UIAccessibility 0x00000001b49e9978 -[NSObject(AXPrivCategory) _accessibilityCustomActionNamesAndIdentifiers] + 68 (NSObjectAccessibility.m:3683) 9 UIAccessibility 0x00000001b49f07bc -[NSObject(AXPrivCategory) _iosAccessibilityAttributeValue:] + 6580 (NSObjectAccessibility.m:6542) 10 UIAccessibility 0x00000001b49d1d9c _copyMultipleAttributeValuesCallback + 544 (UIAccessibilityRuntime.m:344) 11 AXRuntime 0x00000001b39fc834 ___AXXMIGCopyMultipleAttributeValues_block_invoke + 64 (AccessibilityPriv.m:1192) 12 AXRuntime 0x00000001b39fc3a8 _handleNonMainThreadCallback + 68 (AccessibilityPriv.m:467) 13 AXRuntime 0x00000001b39fc6b8 _AXXMIGCopyMultipleAttributeValues + 304 (AccessibilityPriv.m:1191) 14 AXRuntime 0x00000001b39f658c _XCopyMultipleAttributeValues + 396 (AccessibilityClientDefsServer.c:1354) 15 AXRuntime 0x00000001b3a0bd28 mshMIGPerform + 272 (MachServerHelper.c:447) 16 CoreFoundation 0x00000001a939d91c __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 60 (CFRunLoop.c:1937) 17 CoreFoundation 0x00000001a939cfe8 __CFRunLoopDoSource1 + 448 (CFRunLoop.c:2075) 18 CoreFoundation 0x00000001a9397c20 __CFRunLoopRun + 2144 (CFRunLoop.c:3098) 19 CoreFoundation 0x00000001a9397098 CFRunLoopRunSpecific + 480 (CFRunLoop.c:3192) 20 GraphicsServices 0x00000001b3501534 GSEventRunModal + 108 (GSEvent.c:2246) 21 UIKitCore 0x00000001ad4b77ac UIApplicationMain + 1940 (UIApplication.m:4753) 22 MYAPP 0x000000010209cae8 main + 68 (PlaceViewController.swift:25) 23 libdyld.dylib 0x00000001a9216f30 start + 4

Hi!I noticed a strange behavior on MapKit when using the iOS 11 clustering feature.If you add some annotations on a map (with same clusteringIdentifier and same displayPriority) MapKit will correctly merge together annotations that are close.The problem is that if you remove all the annotations and then you add them back the map will no more merge the annotation together. It’s like the clustering feature simply stop working.I don’t really know if it is a bug or if I miss something.Someone else have noticed this?Alan

Hi, On iOS 13 and iOS 14, if you have a navigation controller that use large titles and you push a controller that does not want a large title (navigationItem.largeTitleDisplayMode = .never) there is a smooth animation between the two navigation bar heights (from the large one to the small one). On iOS 15 the animation is missing and during the transition the pushed controller view top part is covered by the large title bar until the end of the transition. After the animation is done the height of the navigation bar suddenly becomes small. Here's the transition on iOS 14. The navigation bar height gradually changes from large to small: And here's the transition on iOS 15. The navigation bar height is not animated and remains the same until the end of the transition animation: I opened a bug report regarding this issue (FB9290717) but I want to know if someone has found a temporary fix for this. Thank you

Hi, I'm currently let the user pick a photo using PHPickerViewController. The advantage of PHPickerViewController is that the user is not requested to grant photo access (no permission alerts). After the user picked the photo I need to take note of the local identifier and the cloud identifier (PHCloudIdentifier). For the local identifier no problem, I just use the assetIdentifier from the PHPickerResult. For obtaining the cloud identifier (PHCloudIdentifier, on iOS 15 only) I need to use the cloudIdentifierMappings method of PHPhotoLibrary. The problem of that method is that is causing the photo library access permission alerts to display. Someone know if there is another way to get the cloud identifier from a local identifier without having to prompt the user photo library access? Thank you

Hi, It seems that when using the inset grouped style in a UITableView, the cells are not aligned with the navigation bar large title. However, I've noticed that all Apple apps that seem to use this style (Settings, Notes) don't have this issue and the cells are perfectly aligned with the title. In the below example you can see that the cells of an inset grouped table are not aligned with the title (extra space between the red line and the cells) but the one's of the Apple apps are perfectly aligned. Do you know if there is a way to change the left and right cells margins of an inset grouped table in order to align them with the large title? Thank you

Hi, This is how I'm currently configuring an UICollectionView sidebar cell. let rowRegistration = UICollectionView.CellRegistration<UICollectionViewListCell, SidebarItem> { (cell, indexPath, item) in var contentConfiguration = UIListContentConfiguration.sidebarSubtitleCell() contentConfiguration.text = item.title contentConfiguration.secondaryText = item.subtitle contentConfiguration.image = item.image cell.contentConfiguration = contentConfiguration } In order to specify the selection background color of the cell I'm setting the backgroundConfiguration property. This work as expected: let rowRegistration = UICollectionView.CellRegistration<UICollectionViewListCell, SidebarItem> { (cell, indexPath, item) in var contentConfiguration = UIListContentConfiguration.sidebarSubtitleCell() contentConfiguration.text = item.title contentConfiguration.secondaryText = item.subtitle contentConfiguration.image = item.image cell.contentConfiguration = contentConfiguration var backgroundConfiguration = UIBackgroundConfiguration.listSidebarCell() backgroundConfiguration.backgroundColorTransformer = UIConfigurationColorTransformer { [weak cell] (color) in if let state = cell?.configurationState { if state.isSelected || state.isHighlighted { return UIColor(named: "Primary")! } } return .clear } cell.backgroundConfiguration = backgroundConfiguration } Now I also need to change the text color based on the cell selection. When the cell is selected the text should be white. I tried to set the colorTransformer of textProperties of contentConfiguration like so: contentConfiguration.textProperties.colorTransformer = UIConfigurationColorTransformer { [weak cell] (color) in if let state = cell?.configurationState { if state.isSelected || state.isHighlighted { return .white } } return .black } Unfortunately the text color does not change after the cell has been selected. What am I doing wrong? Can anyone help me? Thank you

I need to set the value of a variable according to a preprocessor rule, like in the example below. var doSomething = false #if targetEnvironment(macCatalyst) doSomething = true #endif if doSomething { print("Execute!") } If I build the code for an iOS simulator, Xcode will generate a "Will never be executed" alert at the print("Execute!") line. This make sense because preprocessor rules are evaluated before compilation and therefore the code above, when the target is an iOS simulator, corresponds to: var doSomething = false if doSomething { print("Execute!") } I just want to know if there is any advices for handling cases like that. Ideally, I would like to avoid using the preprocessor condition for every statement, like so: #if targetEnvironment(macCatalyst) print("Execute!") #endif but rely on a variable like the original example. I would also prefer to avoid completely disabling in Xcode the display of "Will never be executed" warnings for all source codes. Is there a way to set the "doSomething" variable so that Xcode doesn't display the warning in a case like that? Thank you

Hi, I'm looking for a way to get the list of pending purchases, i.e. the purchases made when the "Ask to buy" feature is enabled and which have yet to be approved. I need this in order to update the UI of my store and disable the possibility to buy products when they are pending for approval. I tried to look into Transaction.all but pending transactions seems to be missing. How can we get the list of pending purchases? Thank you

Hi, I want to set the glyphImage property for an annotation view (MKMarkerAnnotationView) of a cluster annotation (MKClusterAnnotation). Using the below code, inside the marker I get, instead of the glyphImage, the standard cluster number. func mapView(_ mapView: MKMapView, viewFor annotation: MKAnnotation) -> MKAnnotationView? { if let cluster = annotation as? MKClusterAnnotation { var annotationView = mapView.dequeueReusableAnnotationView(withIdentifier: "GroupMapClusterAnnotation") if annotationView == nil { annotationView = MKMarkerAnnotationView(annotation: cluster, reuseIdentifier: "GroupMapClusterAnnotation") } (annotationView as? MKMarkerAnnotationView)?.glyphImage = UIImage(systemName: "star.fill") return annotationView } } I think that the problem is that if you keep the glyphText property empty, MapKit automatically set it with the number of the cluster member annotations. The documentation for glyphImage says: Use this property or the glyphText property to specify the marker balloon content. If you specify both an image and text, MapKit displays the text. So, MapKit is setting glyphText with a value an therefore the glyphImage property is ignored. How can we use the glyphImage property for a cluster annotation? Thank you

Hi, I'm looking for a way to do something when the user presses the window red close button on a Catalyst app. For example, in some cases, I need to display an alert and prevent the window from closing. On AppKit we can use the windowShouldClose delegate method of NSWindowDelegate. Unfortnuately this is not available on Catalyst. Did someone found a way on Catalyst to prevent a window from closing? Maybe there is a way to expose the AppKit NSWindowDelegate object? Thank you

Hi, I have a UITextView with allowsEditingTextAttributes set to true. On iOS 15 and before, users can select part of the text and tap on the BIU button in order to set the text to bold, italic or underline. On iOS 16 the BIU button is missing. How can the user change the formatting of the text contained inside an UITextView on iOS 16? There is something I need to specify on UITextView? Thank you

I have an entity named Image with a binary attribute named imageData. I need to cycle trough all Image objects and do something with the data contained inside the imageData attribute. This is the code: for image in managedObjectContext.allImages { autoreleasepool { var imageData = image.imageData } } I have a lot of objects and every imageData has something like 500KB of data for a total of 3GB of data. The problem is that each time the imageData attribute is used, the data go into memory and not released until the loop is done. This is causing the memory to grow up to 3GB crashing the app. I also tried to turn the object into a fault when I'm done with it by calling refresh(_:mergeChanges:) but nothing changes: for image in managedObjectContext.allImages { autoreleasepool { var imageData = image.imageData managedObjectContext.refresh(image, mergeChanges: false) } } How can I cycle trough all objects without filling up all the memory? Thank you

Hi, I have a controlled contained in a split view controller primary controller with a UISearchController assigned in navigationItem.searchController. On iPhone the search bar is directly displayed in the navigation bar. This is want I want. But on iPad, the search bar is hidden and a search button is displayed in the top right of the navigation bar. In order to display the search bar the user must click on the icon to display the search bar. I want the search bar to always be visible, like on iPhone. How can I achieve that? This is the code I use to include the UISearchController: let searchController = UISearchController(searchResultsController: nil) searchController.searchResultsUpdater = self searchController.obscuresBackgroundDuringPresentation = false searchController.hidesNavigationBarDuringPresentation = false navigationItem.searchController = searchController navigationItem.hidesSearchBarWhenScrolling = false And this is the result on both devices: Thank you

Just found something weird with the String(localized:) method. Let's say that I have a "%lld apples" sentence inside a string catalog. If I call String(localized:"\(1000) apples") when on the device settings the number format is "1'234'567.89" and the device language is English, then the following string is returned: 1\'000 apples Any idea why the ' character has a backslash? It's a bug or I miss something? Thank you

Hi!I have a model with an antity that have a property that use the "Allows External Storage" option. For some reason the framework does not handle the files inside this directory correctly when some of the files have the SAME data.Basically the issue is:- You have an entity with a binary property that use the “Allows External Storage” option.- You create some entities and for every entities you put the same data in the binary property.- After saving Core Data will create inside the _EXTERNAL_DATA folder a file for every entity data.- You delete all the entities from the store.- Core Data will delete only a single file and all the other files are left in the directory forever.So if you create for example 10 identical entities (same data) with 1MB of data for every entity, after deleting all the entities from the store your _EXTERNAL_DATA folder will still contain 9MB of orphaned data that will stay there forever. 😟This bug is present in iOS 7, iOS 8 and iOS 9 beta 5.I have made a sample project that illustrate this behavior:http://www.dale1.ch/documents/delete_external_data_sample_project.zipI have filled a bug report (18319761) the 12 September 2014 with all the informations needed to reproduce the issue but unfortunally is still Open and I didn't received any feedback from Apple.Alan