タップでセクション区切りのListViewにチェックを入れる
タップでセクション区切りのListViewにチェックを入れるサンプルです。 タップすることで State が変化し、✔︎を描画するようになります。
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
import SwiftUI | |
struct ContentView: View { | |
@State var foodTypes: [FoodType] = [ | |
FoodType( | |
name: "Meat", | |
foods: [ | |
Food(check: true, name: "Beef"), | |
Food(check: true, name: "Pork"), | |
Food(check: true, name: "Chicken"), | |
Food(check: true, name: "Mutton"), | |
Food(check: true, name: "Venison"), | |
] | |
), | |
FoodType( | |
name: "Fish", | |
foods: [ | |
Food(check: true, name: "Tuna"), | |
Food(check: true, name: "Mackerel"), | |
Food(check: true, name: "Salmon"), | |
Food(check: true, name: "Shark"), | |
Food(check: true, name: "Bonito"), | |
Food(check: true, name: "Monkfish"), | |
Food(check: true, name: "Sardine"), | |
Food(check: true, name: "Moray"), | |
Food(check: true, name: "Eel"), | |
Food(check: true, name: "Ray"), | |
] | |
), | |
FoodType( | |
name: "Fruit", | |
foods: [ | |
Food(check: true, name: "Apple"), | |
Food(check: true, name: "Banana"), | |
Food(check: true, name: "Orange"), | |
Food(check: true, name: "Peach"), | |
] | |
) | |
] | |
var body: some View { | |
List { | |
ForEach(0 ..< self.foodTypes.count) { foodTypeIndex in | |
Section(header: Text(self.foodTypes[foodTypeIndex].name)) { | |
ForEach(0 ..< self.foodTypes[foodTypeIndex].foods.count) { foodIndex in | |
Button(action: { | |
self.foodTypes[foodTypeIndex].foods[foodIndex].check.toggle() | |
}) { | |
ListRow(check: self.foodTypes[foodTypeIndex].foods[foodIndex].check, name: self.foodTypes[foodTypeIndex].foods[foodIndex].name) | |
} | |
} | |
} | |
} | |
} | |
.edgesIgnoringSafeArea([.bottom]) | |
} | |
} | |
struct FoodType: Identifiable, Equatable { | |
let id: UUID = UUID() | |
var name: String | |
var foods: [Food] | |
} | |
struct Food: Identifiable, Equatable { | |
let id: UUID = UUID() | |
var check: Bool | |
var name: String | |
} | |
struct ListRow: View { | |
let check: Bool | |
let name: String | |
var body: some View { | |
HStack { | |
if check { | |
Text("✔︎") | |
} else { | |
Text(" ") | |
} | |
Text(name) | |
Spacer() | |
} | |
} | |
} | |
struct ContentView_Previews: PreviewProvider { | |
static var previews: some View { | |
ContentView() | |
} | |
} |