在SwiftUI中单击时，如何使圆的周长变为黑色？

单击图像时，我希望将周围区域设置为黑色。我在迅捷如何做到这一点

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您可以使用

.overlay

和

.stroke

修饰符来实现这一点

检查下面的代码，希望它能帮助您

struct CircleOutLineView: View {
    var body: some View {
        ScrollView(.horizontal, showsIndicators: false) {
            HStack {
                CircleView(fillColor: .blue, outlineColor: .black)
                CircleView(fillColor: .red, outlineColor: .black)
                CircleView(fillColor: .yellow, outlineColor: .black)
                CircleView(fillColor: .green, outlineColor: .black)
                CircleView(fillColor: .purple, outlineColor: .black)
            }
            .padding()
            .frame(height: 100)
        }
    }
}

struct CircleOutLineView_Previews: PreviewProvider {
    static var previews: some View {
        CircleOutLineView()
    }
}

struct CircleView: View {
    
    @State private var isTapped = false
    
    var fillColor: Color
    var outlineColor: Color
    
    var body: some View {
        Circle()
            .fill(fillColor)
            .frame(width: 80, height: 80)
            .overlay(Circle().stroke(outlineColor, lineWidth: isTapped ? 1 : 0))
            .onTapGesture {
                self.isTapped.toggle()
            }
    }
}

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你是怎么尝试的？叠加法解决了我的问题，谢谢。