主要程式
struct ContentView: View {
@State var input = “”
@State var result = “?”
let password = “1234”
var body: some View {
VStack {
Text(result)
Text(“輸入密碼”)
HStack {
ForEach(0 ..< 4) { item in
Image(systemName: self.input.count <= item ? “circle” : “circle.fill”)
}
}
HStack {
ForEach(1 ..< 4) { item in
Button(action: {
self.input.append(“\(item)”)
if self.input.count == 4 {
if self.input == self.password {
self.result = “O”
} else {
self.result = “X”
self.input = “”
}
}
}) {
Text(“\(item)”)
}
}
}
HStack {
ForEach(4 ..< 7) { item in
Button(action: {
self.input.append(“\(item)”)
if self.input == self.password {
self.result = “O”
} else {
self.result = “X”
self.input = “”
}
}) {
Text(“\(item)”)
}
}
}
HStack {
ForEach(7 ..< 10) { item in
Button(action: {
self.input.append(“\(item)”)
if self.input == self.password {
self.result = “O”
} else {
self.result = “X”
self.input = “”
}
}) {
Text(“\(item)”)
}
}
}
HStack {
Button(action: {
self.input.append(“0”)
if self.input == self.password {
self.result = “O”
} else {
self.result = “X”
self.input = “”
}
}) {
Text(“0”)
}
Button(action: {
self.input.removeLast()
}) {
Image(systemName: “delete.left”)
}
}
}
}
}
struct ContentView_Previews: PreviewProvider {
static var previews: some View {
ContentView()
}
}
