Android: Catch Back Button on EditText

CustomEditText.cs

using System;
using Android.Content;
using Android.Graphics;
using Android.Util;
using Android.Widget;

namespace MyProject.Droid.Controls
{
    public class CustomEditText : EditText
    {
        public event EventHandler BackPressed;
    
        public CustomEditText(Context context)
            : this(context, null)
        {
        }

        public CustomEditText(Context context, IAttributeSet attributes)
            : this(context, attributes, Resource.Attribute.titleTextStyle)
        {
        }

        public CustomEditText(Context context, IAttributeSet attributes, int defStyle)
            : base(context, attributes, defStyle)
        {
            var a = context.ObtainStyledAttributes(attributes, Resource.Styleable.Fonts);
            var font = a.GetString(Resource.Styleable.Fonts_customFont);

            this.SetBackgroundColorFilter(context);
            this.SetCustomFont(font);

            a.Recycle();
        }

        private void SetBackgroundColorFilter(Context context)
        {
            //this.Background.SetColorFilter(context.Resources.GetColor(Resource.Color.appBorderColor), PorterDuff.Mode.SrcAtop);
        }

        public void SetCustomFont(string asset)
        {
            Typeface typeface = null;
            try
            {
                typeface = Typeface.CreateFromAsset(Context.Assets, asset);

                if (typeface == null)
                {
                    Console.WriteLine("No typeface found for asset: " + asset);
                    return;
                }
            }
            catch
            {
                Console.WriteLine("Could not load typeface from asset: " + asset);
                return;
            }

            var style = typeface?.Style ?? TypefaceStyle.Normal;

            this.SetTypeface(typeface, style);
        }
        
        public override bool OnKeyPreIme([GeneratedEnum] Keycode keyCode, KeyEvent e)
        {
            if (e.KeyCode == Keycode.Back && e.Action == KeyEventActions.Up)
            {
                BackPressed?.Invoke(this, new EventArgs());
            }
            
            return base.OnKeyPreIme(keyCode, e);
        }
    }
}

FragmentView.cs

/* ... in the view ... */
public override View OnCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) 
{
    // ...
    editText = FindViewById<CustomEditText>(Resource.Id.MyEditText);
    editText.BackPressed += (s, e) => 
    {
        // <insert code here>
    };
}

Uses the same CustomEditText that I created for having custom fonts in the EditText.