如何使用滑动手势在swift UI中创建退格键功能(与原始IOS计算器中相同)

import SwiftUI

struct ContentView: View {
    @State private var inputText = ""
    
    var body: some View {
        VStack {
            TextField("输入内容", text: $inputText)
                .padding()
                .border(Color.gray, width: 1)
                .gesture(
                    DragGesture()
                        .onChanged { _ in
                            // 每次手势变化时，删除最后一个字符
                            self.inputText = String(self.inputText.dropLast())
                        }
                )
            
            Text("输入结果：\(inputText)")
                .padding()
        }
        .padding()
    }
}

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