记录一下，横滚选中的样式

截屏.png

let array = ["推荐", "手机", "箱包", "盲盒", "手办", "双十一转卖", "童裝"]

struct ContentView: View {
    @State var typeSwitch = 0
    var body: some View {
        VStack {
            ScrollView(.horizontal,showsIndicators: false) {
                VStack(alignment: .weirdAlignment,spacing: 0) {
                    HStack(spacing: 16) {
                        ForEach(array.indices, id: \.self) { i in
                            Group {
                                if i == typeSwitch {
                                    Text(array[i])
                                        .foregroundColor(.black)
                                        .font(Font.system(size: 21,weight: .bold))
                                        .alignmentGuide(.weirdAlignment) { d in
                                            d[HorizontalAlignment.center]
                                        }
                                        .transition(AnyTransition.identity)
                                } else {
                                    Button(array[i]) {
                                        withAnimation {
                                            typeSwitch = i
                                        }
                                    }
                                    .foregroundColor(.gray)
                                    .font(Font.system(size: 18,weight: .regular))
                                    .transition(AnyTransition.identity)
                                }
                            }
                        }
                    }.padding(EdgeInsets(top: 0, leading: 0, bottom: 0, trailing: 0))
                    Image("lineIcon").alignmentGuide(.weirdAlignment) { d in
                        d[HorizontalAlignment.center]
                    }.padding(EdgeInsets(top: 0, leading: 0, bottom: 4, trailing: 0))
                }
            }
        }
        .padding()
    }
}

extension HorizontalAlignment {
    private enum WeirdAlignment: AlignmentID {
        static func defaultValue(in context: ViewDimensions) -> CGFloat {
            return 0
        }
    }
    static let weirdAlignment = HorizontalAlignment(WeirdAlignment.self)
}