如何在视图上使用SwiftUI检测上下左右滑动

import SwiftUI

struct ContentView: View {
    @State private var offset = CGSize.zero
    
    var body: some View {
        Rectangle()
            .frame(width: 200, height: 200)
            .foregroundColor(.blue)
            .offset(offset)
            .gesture(
                DragGesture()
                    .onChanged { gesture in
                        self.offset = gesture.translation
                    }
                    .onEnded { gesture in
                        let swipeThreshold: CGFloat = 100
                        if gesture.translation.width > swipeThreshold {
                            // 向右滑动
                            print("向右滑动")
                        } else if gesture.translation.width < -swipeThreshold {
                            // 向左滑动
                            print("向左滑动")
                        } else if gesture.translation.height > swipeThreshold {
                            // 向下滑动
                            print("向下滑动")
                        } else if gesture.translation.height < -swipeThreshold {
                            // 向上滑动
                            print("向上滑动")
                        }
                        self.offset = .zero
                    }
            )
    }
}

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}