List with children on macOS 11.0 renders wrong data

Question

ruzambo OP

Created Dec ’20

Replies 3

Boosts 0

Participants 2

I need to display the following data as a list with groups

Code Block - Item 00
- Item 01
    - Item 10
         - Item 20
         - Item 21
    - Item 11
- Item 02

However if Item 10 is collapsed Item 11 is shown as Item 02.
What am I doing wrong? Unique IDs are set.

You can see it clearly on screenshots:

Corrupted
https://github.com/kmalyshev/ListProblemExample/blob/main/images/Screenshot1.png

Correct
https://github.com/kmalyshev/ListProblemExample/blob/main/images/Screenshot2.png

The code:

Code Block Swiftimport SwiftUI
struct ContentView: View {
   
  let data = Item.getSampleData()
   
  var body: some View {
    List(data, id: \.id, children: \.children) { item in
      Text(item.name)
    }.listStyle(SidebarListStyle())
  }
}
struct ContentView_Previews: PreviewProvider {
  static var previews: some View {
    ContentView()
  }
}
struct Item: Codable {
   
  let id: UUID
  let name: String
  let children: [Item]?
   
  init(id: UUID = UUID(), name: String, children: [Item]? = nil) {
    self.id = id
    self.name = name
    self.children = children
  }
   
  static func getSampleData() -> [Item] {
    [
      Item(name: "Item 00"),
      Item(
        name: "Item 01",
        children: [
          Item(
            name: "Item 10",
            children: [
              Item(name: "Item 20"),
              Item(name: "Item 21"),
            ]
          ),
          Item(name: "Item 11"),
        ]
      ),
      Item(name: "Item 02"),
    ]
  }
   
}

I created a sample project that shows the problem.
https://github.com/kmalyshev/ListProblemExample

I tried it on macOS 11.0.1 and 11.1 Beta
Updated Xcode to 12.3 - same result. OutlineGroup and List with ForEach using recursive view give the same result.

Any help is appreciated.

Boost

Answer 1

ruzambo OP

Dec ’20

Exactly the same code works as intended on iOS.

0

Answer 2

ruzambo OP

Jul ’21

Apple has fixed it, works as intended on macOS 11.5 Beta. Bug #FB8955055

0

Answer 3

workingdogintokyo OP

Jul ’21

Also works without any problems on macos 12.beta, xcode 13.beta, target ios 15 and macCatalyst 12. Tested on macOS 12 and iPhone ios 15.

0