SWIFTUI-如何更改数组中随机变量的值？

我正在尝试用SwiftUI构建一个简单的打鼹鼠游戏。在下面的代码中，我想做的是，每当第二个计时器倒计时时，resimler数组的一个成员（由resim1..resim9组成）将更改为具有值mavis，该值是库中图像的名称

当我使用printresimler时，我可以从输出中看到该数组中的一个随机元素的值为mavis，没有问题。但人体内的相关图像并不显示模拟器中的图像

例如： [，mavis，，，，，]

我在结果中看到该日志，但Imageresim2没有显示该图像

如何让它显示图像

谢谢

struct level1: View {

@State var resim1 = ""
@State var resim2 = ""
@State var resim3 = ""
@State var resim4 = ""
@State var resim5 = ""
@State var resim6 = ""
@State var resim7 = ""
@State var resim8 = ""
@State var resim9 = ""

 @State var timecounter = 5
 var timer = Timer.publish(every: 1, on: .main, in: .common).autoconnect()

func findMavis() {

    var resimler =  [self.resim1 , self.resim2 , self.resim3 , self.resim4 , self.resim5 , self.resim6 , self.resim7 , self.resim8 , self.resim9 ]

    let randomResim = Int(arc4random_uniform(UInt32(resimler.count - 1)))
    resimler[randomResim] = "mavis"
}
var body: some View {
VStack {

       Text("\(timecounter) seconds remaining").padding(.bottom, 50).onReceive(timer) { input in self.timecounter -= 1

              // the functions in this area will work every second
                     self.findMavis()

          // the functions after this will work after the timer stops
        if self.timecounter == 0 {
            self.timer.upstream.connect().cancel()



            }
        }
  HStack {
    Image(resim1).resizable()
            .frame(width: 100.0, height: 100.0).cornerRadius(50).onTapGesture {

                if self.resim1 == "mavis" {
                    self.scoreUp() }
        }
            Image(resim2).resizable()
            .frame(width: 100.0, height: 100.0).cornerRadius(50).onTapGesture {
            if self.resim2 == "mavis" {
                                   self.scoreUp() }
        }
        Image(resim3).resizable()
        .frame(width: 100.0, height: 100.0).cornerRadius(50).onTapGesture {
             if self.resim3 == "mavis" {
                                   self.scoreUp() }
        }
    }
  HStack {
    Image(resim4).resizable()
        .frame(width: 100.0, height: 100.0).cornerRadius(50).onTapGesture {
             if self.resim4 == "mavis" {
                                   self.scoreUp() }
        }
        Image(resim5).resizable()
        .frame(width: 100.0, height: 100.0).cornerRadius(50).onTapGesture {
             if self.resim5 == "mavis" {
                                   self.scoreUp() }
        }
        Image(resim6).resizable()
        .frame(width: 100.0, height: 100.0).cornerRadius(50).onTapGesture {
             if self.resim6 == "mavis" {
                                   self.scoreUp() }
           }
    }
   HStack {
          Image(resim7).resizable()
        .frame(width: 100.0, height: 100.0).cornerRadius(50).onTapGesture {
             if self.resim7 == "mavis" {
                                   self.scoreUp() }
        }
        Image(resim8).resizable()
        .frame(width: 100.0, height: 100.0).cornerRadius(50).onTapGesture {
             if self.resim8 == "mavis" {
                                   self.scoreUp() }
        }
        Image(resim9).resizable()
        .frame(width: 100.0, height: 100.0).cornerRadius(50).onTapGesture {
             if self.resim9 == "mavis" {
                                   self.scoreUp() }
        }
    }


 }
 }
 }

---

也许你应该阅读Swift初学者教程，如何分配变量

据此：

var resimler =  [self.resim1 , self.resim2 , self.resim3 , self.resim4 , self.resim5 , self.resim6 , self.resim7 , self.resim8 , self.resim9 ]

    let randomResim = Int(arc4random_uniform(UInt32(resimler.count - 1)))
    resimler[randomResim] = "mavis" // this line is your error

在我指出错误的这一行，您不需要更改self.resim1-9

您可以将数组更改为@State变量，并直接更改数组中的值，然后在图像中使用这些值，如：Imageresilmer[0]等等

试试这个：虽然我不知道你想做什么…但是代码是有效的，不喜欢意大利面条

struct ContentView: View {

    @State var timecounter = 5
    @State var score = 0

    var timer = Timer.publish(every: 1, on: .main, in: .common).autoconnect()

    func scoreUp() {
        score = score + 1
    }

    @State var resimler : [String] = ["","","","","","","","",""]

    func findMavis() {

        let randomResim = Int(arc4random_uniform(UInt32(resimler.count - 1)))
        self.resimler[randomResim] = "circle.fill"
    }
    var body: some View {
        VStack {
            Text("Score: \(score)")
                .font(Font.largeTitle)
            Text("\(timecounter) seconds remaining").padding(.bottom, 50).onReceive(timer) { input in self.timecounter -= 1

                // the functions in this area will work every second
                self.findMavis()

                // the functions after this will work after the timer stops
                if self.timecounter == 0 {
                    self.timer.upstream.connect().cancel()

                }
            }
            ForEach (0..<9) {index in
                Image(systemName:self.resimler[index]).resizable()
                    .frame(width: 100.0, height: 100.0).cornerRadius(50).onTapGesture {

                        if self.resimler[index] == "circle.fill" {
                            self.scoreUp() }
                }
            }
        }
    }
}

---

是的，我明白了。当我按自己的方式做时，我不改变变量，我只是改变数组中的值。你的没有给我我想要的，但至少我会停止在错误的道路上浪费更多的时间，谢谢！