我们如何显示关于 UITextField 是 xCode Swift 的建议

我在网上花了几个小时，但我找不到适合我的问题的解决方案.问题如下:

目前，当用户开始在自定义文本字段中键入文本时，我们需要以下拉列表的形式显示建议.将要显示的视图应显示在每个文本字段的正下方，并且不应中断现有视图的流动和定位.当然，我们需要修改文本字段实现，因为我们在许多不同的地方使用它，不同的方法看起来非常困难.

一般来说，如何实现这种行为？

Bellow我正在发布我们的文本输入实现

谢谢

class TextFieldPad: UITextField {
  let padding = UIEdgeInsets(top: 0, left: 15, bottom: 0, right: 15)
  override open func textRect(forBounds bounds: CGRect) -> CGRect {
    return bounds.inset(by: padding)
  }
  override open func placeholderRect(forBounds bounds: CGRect) -> CGRect {
    return bounds.inset(by: padding)
  }
  override open func editingRect(forBounds bounds: CGRect) -> CGRect {
    return bounds.inset(by: padding)
  }
}
struct FocusableTextField: UIViewRepresentable {
  class Coordinator: NSObject, UITextFieldDelegate {
    @Binding var text: String
    var didBecomeFirstResponder = false
    init(text: Binding<String>) {
      _text = text
    }
    func textFieldDidChangeSelection(_ textField: UITextField) {
      text = textField.text ?? “”
    }
  }
  @Binding var placeHolder: String;
  @Binding var text: String
  var isFirstResponder: Bool = false
  var issecure: Bool = false
  var borderColor: UIColor = UIColor(rgb: 0xEEA924);
  var backgroundColor: UIColor = UIColor.white;
  var placeholderColor: UIColor = UIColor.black;
  var textColor: UIColor = UIColor.black;
  func makeUIView(context: UIViewRepresentableContext<FocusableTextField>) -> UITextField {
    let textField = TextFieldPad(frame: .zero)
    textField.layer.borderWidth = 2;
    textField.layer.borderColor = borderColor.cgColor
    textField.layer.cornerRadius = CGFloat(14.0)
    textField.layer.backgroundColor = backgroundColor.cgColor
    textField.isSecureTextEntry = issecure
    textField.textColor = textColor
    textField.autocorrectionType = .no
    textField.autocapitalizationType = .none
    textField.attributedPlaceholder = NSAttributedString(
      string: placeHolder,
      attributes: [NSAttributedString.Key.foregroundColor : placeholderColor.cgColor]
    )
    textField.delegate = context.coordinator
    return textField
  }
  func makeCoordinator() -> FocusableTextField.Coordinator {
    return Coordinator(text: $text)
  }
  func updateUIView(_ uiView: UITextField, context: UIViewRepresentableContext<FocusableTextField>) {
    uiView.text = text
    if isFirstResponder && !context.coordinator.didBecomeFirstResponder {
      uiView.becomeFirstResponder()
      context.coordinator.didBecomeFirstResponder = true
    }
  }
}