如何在Xamarin.Forms中处理iOS上的附件按钮点击？

public interface IAttachmentService
{
    void HandleAttachmentButtonClicked();
}

[assembly: ExportRenderer(typeof(Button), typeof(AttachmentButtonRenderer))]
namespace YourAppName.iOS
{
    public class AttachmentButtonRenderer : ButtonRenderer
    {
        protected override void OnElementChanged(ElementChangedEventArgs<Button> e)
        {
            base.OnElementChanged(e);

            if (Control != null)
            {
                Control.TouchUpInside += OnTouchUpInside;
            }
        }

        private void OnTouchUpInside(object sender, EventArgs e)
        {
            var attachmentService = DependencyService.Get<IAttachmentService>();
            attachmentService?.HandleAttachmentButtonClicked();
        }
    }
}

[assembly: Dependency(typeof(AttachmentService))]
namespace YourAppName.iOS
{
    public class AttachmentService : IAttachmentService
    {
        public void HandleAttachmentButtonClicked()
        {
            // 在这里处理附件按钮点击的逻辑
        }
    }
}

Button attachmentButton = new Button
{
    Text = "附件按钮"
};

attachmentButton.Clicked += (sender, e) =>
{
    var attachmentService = DependencyService.Get<IAttachmentService>();
    attachmentService?.HandleAttachmentButtonClicked();
};

Content = new StackLayout
{
    Children = { attachmentButton }
};