对于单元格内的特定文本，LazyVGrid 单元格子视图不断消失

Question

场景

我正在尝试创建一个 3 列的 LazyVGrid，它通过 LazyVGrid 显示具有图标和文本的项目。

代码

struct CategoryPickerCellPresentationModel: Identifiable {
    let id = UUID()
    let name: String
    let image: Image
    let color: Color
}

extension CategoryPickerCellPresentationModel: Equatable {
    static func == (lhs: CategoryPickerCellPresentationModel, rhs: CategoryPickerCellPresentationModel) -> Bool {
        return lhs.name == rhs.name
    }
}

struct CategoriesListView: View {
    let categorySelectionDatasource: [CategoryPickerCellPresentationModel]
    let gridItemLayout: [GridItem] = Array(repeating: .init(.flexible()), count: 3)
    
    var body: some View {
        ScrollView {
            Spacer(minLength: 20)
            LazyVGrid(columns: gridItemLayout, spacing: 40) {
                ForEach((0..<categorySelectionDatasource.count)) {
                    let category = categorySelectionDatasource[[=10=]]
                    VStack {
                        category.image
                            .font(.system(size: 30))
                            .frame(width: 50, height: 50)
                            .foregroundColor(category.color)
                        Text(category.name)
                            .multilineTextAlignment(.center)
                    }
                }
            }
        }
    }
}

struct CategoriesListView_Previews: PreviewProvider {
    static var previews: some View {
        let dumyCategory = [CategoryPickerCellPresentationModel(name: "Household", image: Image(systemName: "house.fill"), color: .green),
                            CategoryPickerCellPresentationModel(name: "Finance", image: Image(systemName: "banknote.fill"), color: .green), CategoryPickerCellPresentationModel(name: "Education", image: Image(systemName: "book.fill"), color: .purple), CategoryPickerCellPresentationModel(name: "Health", image: Image(systemName: "cross.case.fill"), color: .red)]
        CategoriesListView(categorySelectionDatasource: dumyCategory+dumyCategory.reversed()+dumyCategory)
    }
}

问题

每当文本为 Health 时，我尝试滚动网格，文本就会消失。我尝试了 Health 以外的几种不同的文本，对他们来说效果很好。

这可能是什么原因造成的？

Answer 1

这是 frame 的问题，删除此行 .frame(width: 50, height: 50) 并且它有效。字母 Health 没有问题，但当 text 宽度小于 50.

时会产生同样的问题

编辑

如果您在 ForEach 循环中添加 id，则有效。无需删除框架。

ForEach((0..<categorySelectionDatasource.count), id:\.self)

对于单元格内的特定文本，LazyVGrid 单元格子视图不断消失

LazyVGrid cell subviews keep disappearing for particular text inside cell

ios

swift

swiftui

lazyvgrid

场景

代码

问题