How can I make a numbered, maneuverable list in SwiftUI?-CodePudding

Currently, I create a generic list as follows:

List {
    ForEach(viewModel.categoryItems) { category in
        Text("\(category.category)")
    }.onMove { indexSet, newOffset in
        viewModel.categoryItems.move(fromOffsets: indexSet, toOffset: newOffset)
    }
}.toolbar {
    ToolbarItem {
        if viewModel.categoryItems.count > 0 {
            EditButton()
        }
    }
}

I would like to be able to number this list and also have those numbers change on move (2 becomes 1 if moved into the 1 place).

CodePudding user response：

one option would be to use the indices property of the array. Something like this:

struct ContentView: View {
    @ObservedObject
    var viewModel = Model()

    var body: some View {
        List {
            ForEach(viewModel.categoryItems.indices, id: \.self) { idx in
                Text("\(idx) - \(viewModel.categoryItems[idx].category)")
            }.onMove { indexSet, newOffset in
                viewModel.categoryItems.move(fromOffsets: indexSet, toOffset: newOffset)
            }
        }
    }
}

Downside is that you have to access the object via the array as you only get the current index within the loop.

Some more elaborate solutions are listed here: