If I use the example code I find in the Quick help for LIST (Creating hierarchical lists) in MAC OS 15.1, I get an error, but not in IOS 18.1. The error happens when I try to Compact any Item I had expanded. If I use a table instead I also get an error, But If I use outline group without list there is not error
struct ContentView: View {
struct FileItem: Hashable, Identifiable, CustomStringConvertible {
var id: Self { self }
var name: String
var children: [FileItem]? = nil
var description: String {
switch children {
case nil:
return "📄 \(name)"
case .some(let children):
return children.isEmpty ? "📂 \(name)" : "📁 \(name)"
}
}
}
let fileHierarchyData: [FileItem] = [
FileItem(name: "users", children:
[FileItem(name: "user1234", children:
[FileItem(name: "Photos", children:
[FileItem(name: "photo001.jpg"),
FileItem(name: "photo002.jpg")]),
FileItem(name: "Movies", children:
[FileItem(name: "movie001.mp4")]),
FileItem(name: "Documents", children: [])
]),
FileItem(name: "newuser", children:
[FileItem(name: "Documents", children: [])
])
]),
FileItem(name: "private", children: nil)
]
var body: some View {
List(fileHierarchyData, children: \.children) { item in
Text(item.description)
}
}
}
RicMarlop
Users receive reputation points by contributing quality content to the forums.
Posts include post and replies published on the forums.
Post authors can mark replies as Accepted to indicate successful solutions.
Apple Developer Forums admins can mark replies as Apple Recommended to indicate an approved solution
Last seen
User for
Post
Replies
Boosts
Views
Activity
I have a model "Objetive" with recursive iteration. In the user interface I can see all the Items, as expected, and I can expands all those that have children. However, I encounter an error when attempting to compact anyone with children that I have previously expanded, But only when I'm using Mac OS 15.1 On iOS 18.1 Works perfectly.
The error happens in List, Outlinegroup or Table.
struct ObjectiveTable: View{
@Query(filter: #Predicate<Objective>{$0.parent == nil}) var all : [Objective]
@State var selected : Objective?
var body: some View{
VStack{
List(all ,children: \Objective.sonsNIL){ line in
Text(line.name)
}
}
}
}
@Model
final class Objective{
@Attribute(.unique)
var id = UUID()
var name: String
var parent: Objective? = nil
@Relationship(deleteRule: .cascade, inverse: \Objective.parent)
var sons: [Objective] = []
var sonsNIL: [Objective]?{
get{
if sons.count < 1{
return nil
} else{
return sons
}
}
}
...
ERROR
Row index -1 out of row range (numberOfRows: 14) for <SwiftUI.SwiftUIOutlineListView: 0x129852200>
(
0 CoreFoundation 0x000000018c834ec0 __exceptionPreprocess + 176
1 libobjc.A.dylib 0x000000018c31acd8 objc_exception_throw + 88
2 AppKit 0x00000001903eb304 -[NSTableRowData availableRowViewWhileUpdatingAtRow:] + 0
3 SwiftUI 0x00000001bb365224 $s7SwiftUI0A17UIOutlineListViewC11removeItems2at8inParent13withAnimationy10Foundation8IndexSetV_ypSgSo07NSTableeL7OptionsVtF + 1388
4 SwiftUI 0x00000001bb3656f8 $s7SwiftUI0A17UIOutlineListViewC11removeItems2at8inParent13withAnimationy10Foundation8IndexSetV_ypSgSo07NSTableeL7OptionsVtFTo + 252
5 CoreFoundation 0x000000018c7a28b4 invoking + 148
6 CoreFoundation 0x000000018c7a272c -[NSInvocation invoke] + 428
7 CoreFoundation 0x000000018c7d7958 -[NSInvocation invokeWithTarget:] + 64
8 AppKit 0x000000019052a110 -[NSObjectAnimator forwardInvocation:] + 1512
9 CoreFoundation 0x000000018c7a0ee4 forwarding + 964
10 CoreFoundation 0x000000018c7a0a60 CF_forwarding_prep_0 + 96
11 SwiftUI 0x00000001bb37e458 $s7SwiftUI22OutlineListCoordinatorC19recursivelyDiffRows_4with2by9expandAllyAA0a9UIOutlineD4ViewC_AA0dC4ItemCAA0nD4TreeVAA14ExpansionStateOtF + 37012
12 SwiftUI 0x00000001bb3802b8 $s7SwiftUI22OutlineListCoordinatorC19recursivelyDiffRows_4with2by9expandAllyAA0a9UIOutlineD4ViewC_AA0dC4ItemCAA0nD4TreeVAA14ExpansionStateOtF + 44788
13 SwiftUI 0x00000001bb37538c $s7SwiftUI22OutlineListCoordinatorC8diffRows2of2toyAA0a9UIOutlineD4ViewC_AA0kD4TreeVtF + 120
14 SwiftUI 0x00000001bb36f3d4 $s7SwiftUI22OutlineListCoordinatorC6update4diff04viewD4Tree18idSelectionChanged010navigationk4SeedL0011templateRowL011transactionySb_AA04ViewdI0VS3bAA11TransactionVtFyycfU_yyXEfU + 220
15 SwiftUI 0x00000001bb369044 $s7SwiftUI22OutlineListCoordinatorC24withSelectionUpdateGuard33_BE7B171B0BEE2A9E27ED12968C3771F8LLyySS_yyXEtF + 1320
16 SwiftUI 0x00000001bb36f2d4 $s7SwiftUI22OutlineListCoordinatorC6update4diff04viewD4Tree18idSelectionChanged010navigationk4SeedL0011templateRowL011transactionySb_AA04ViewdI0VS3bAA11TransactionVtFyycfU + 708
17 SwiftUICore 0x00000002277cb578 $sIeg_ytIegr_TRTA + 28
18 SwiftUICore 0x0000000227a6d2b8 $s7SwiftUI6UpdateO15dispatchActionsyyFZ + 1236
19 SwiftUICore 0x0000000227a6c79c $s7SwiftUI6UpdateO3endyyFZ + 212
20 SwiftUICore 0x0000000227f6061c $sSo9NSRunLoopC7SwiftUIE11addObserveryyyycFZySo05CFRunbF3RefaSg_So0gB8ActivityVSvSgtcfU_Tf4ddd_n + 176
21 CoreFoundation 0x000000018c7c17a8 CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION + 36
22 CoreFoundation 0x000000018c7c1694 __CFRunLoopDoObservers + 552
23 CoreFoundation 0x000000018c7c0380 CFRunLoopRunSpecific + 648
24 HIToolbox 0x0000000197c000cc RunCurrentEventLoopInMode + 292
25 HIToolbox 0x0000000197c05d1c ReceiveNextEventCommon + 220
26 HIToolbox 0x0000000197c06020 _BlockUntilNextEventMatchingListInModeWithFilter + 76
27 AppKit 0x0000000190303650 _DPSNextEvent + 660
28 AppKit 0x0000000190c2a408 -[NSApplication(NSEventRouting) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 688
29 AppKit 0x00000001902f675c -[NSApplication run] + 480
30 AppKit 0x00000001902cd02c NSApplicationMain + 888
31 SwiftUI 0x00000001ba77045c $s7SwiftUI6runAppys5NeverOSo21NSApplicationDelegate_So11NSResponderCXcFTf4e_nAA07TestingdG0C_Tg5Tm + 160
32 SwiftUI 0x00000001babf4854 $s7SwiftUI6runAppys5NeverOxAA0D0RzlF + 84
33 SwiftUI 0x00000001baf04134 $s7SwiftUI3AppPAAE4mainyyFZ + 224
34 Marlo SystemManagement.debug.dylib 0x0000000100ce6130 $s22Marlo_SystemManagement0a1_bC3AppV5$mainyyFZ + 40
35 Marlo SystemManagement.debug.dylib 0x0000000100ce61fc __debug_main_executable_dylib_entry_point + 12
36 dyld 0x000000018c358274 start + 2840
)
FAULT: NSTableViewException: Row index -1 out of row range (numberOfRows: 14) for <SwiftUI.SwiftUIOutlineListView: 0x129852200>; (user info absent)