MvvmCross自定义事件绑定事件参数

我已经使用MvvmCross为EditText上的FocusChange事件创建了自定义绑定。我可以将事件绑定并激发,但无法确定如何传递事件参数。我的自定义绑定是这样的

using Android.Views;
using Android.Widget;
using Cirrious.MvvmCross.Binding;
using Cirrious.MvvmCross.Binding.Droid.Target;
using Cirrious.MvvmCross.Binding.Droid.Views;
using Cirrious.MvvmCross.ViewModels;
using System;

namespace MPS_Mobile_Driver.Droid.Bindings
{
    public class MvxEditTextFocusChangeBinding
        : MvxAndroidTargetBinding
    {
        private readonly EditText _editText;
        private IMvxCommand _command;

        public MvxEditTextFocusChangeBinding(EditText editText) : base(editText)
        {
            _editText = editText;
            _editText.FocusChange  += editTextOnFocusChange;
        }

        private void editTextOnFocusChange(object sender, EditText.FocusChangeEventArgs eventArgs)
        {
            if (_command != null)
            {
                _command.Execute( eventArgs );
            }
        }

        public override void SetValue(object value)
        {
            _command = (IMvxCommand)value;
        }

        protected override void Dispose(bool isDisposing)
        {
            if (isDisposing)
            {
                _editText.FocusChange -= editTextOnFocusChange;
            }
            base.Dispose(isDisposing);
        }

        public override Type TargetType
        {
            get { return typeof(IMvxCommand); }
        }

        protected override void SetValueImpl(object target, object value)
        {
        }

        public override MvxBindingMode DefaultMode
        {
            get { return MvxBindingMode.OneWay; }
        }
    }
}

我在ViewModel中将其连接为:

public IMvxCommand FocusChange
{
    get
    {
        return new MvxCommand(() =>
            OnFocusChange()
            );
    }
}

private void OnFocusChange()
{
    //Do Something
}

有没有办法做类似的事情

public IMvxCommand FocusChange
{
    get
    {
        return new MvxCommand((e) =>
            OnFocusChange(e)
            );
    }
}

private void OnFocusChange(EditText.FocusChangeEventArgs e)
{
    //Do Something
}

我试图在那里做的事情不起作用,但我希望有类似的事情可能起作用。当命令在带有此行的自定义绑定中触发时,我能够传递事件参数

            _command.Execute( eventArgs );

我只是想不出在ViewModel中捕捉它们的方法。有人能帮我吗?

吉姆