It is a way to add and delete contents in List in SwiftUI. It seems bad to pass a delete function in closure. Please let me know if there is a better way.
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| import SwiftUI | |
| struct ContentView: View { | |
| @State var fruits: [Fruit] = [Fruit(name: "Apple"), Fruit(name: "Banana"), Fruit(name: "Grape")] | |
| var body: some View { | |
| ZStack { | |
| List(fruits) { fruit in | |
| Row(fruit: fruit) { id in | |
| self.removeFruit(id: id) | |
| } | |
| } | |
| VStack { | |
| Spacer() | |
| Button(action: { | |
| self.fruits.append(Fruit(name: "New Fruit")) | |
| }) { | |
| Text("Add Fruit") | |
| .font(Font.system(size: 20)) | |
| .padding() | |
| .border(Color.gray) | |
| } | |
| } | |
| } | |
| } | |
| func removeFruit(id: UUID) { | |
| if let index = fruits.firstIndex(where: { $0.id == id }) { | |
| fruits.remove(at: index) | |
| } | |
| } | |
| } | |
| struct Fruit: Identifiable { | |
| let id = UUID() | |
| let name: String | |
| } | |
| struct Row: View { | |
| let fruit: Fruit | |
| let closure: (_ id: UUID) -> Void | |
| var body: some View { | |
| HStack { | |
| Text(fruit.name) | |
| .padding() | |
| Spacer() | |
| Button(action: { | |
| self.closure(self.fruit.id) | |
| }) { | |
| Text("Delete") | |
| .font(Font.system(size: 20)) | |
| .padding() | |
| .border(Color.gray) | |
| } | |
| } | |
| } | |
| } | |
| struct ContentView_Previews: PreviewProvider { | |
| static var previews: some View { | |
| ContentView() | |
| } | |
| } |