http.cs

    public class HttpImageView : ImageView
    {
        private readonly MvxDynamicImageHelper<Bitmap> _imageHelper;

        public HttpImageView(Context context, IAttributeSet attrs)
            : base(context, attrs)
        { 
            this._imageHelper = new MvxDynamicImageHelper<Bitmap>();
            this._imageHelper.ImageChanged += this.ImageHelperOnImageChanged;
            var typedArray = context.ObtainStyledAttributes(attrs, MvxAndroidBindingResource.Instance.ImageViewStylableGroupId);

            int numStyles = typedArray.IndexCount;
            for (var i = 0; i < numStyles; ++i)
            {
                int attributeId = typedArray.GetIndex(i);
                if (attributeId == MvxAndroidBindingResource.Instance.SourceBindId)
                {
                    this.HttpImageUrl = typedArray.GetString(attributeId);
                }
            }
            typedArray.Recycle();
        }

        public string HttpImageUrl
        {
            get { return this.Image.ImageUrl; }
            set { this.Image.ImageUrl = value; }
        }

        public HttpImageView(Context context)
            : base(context)
        {
        }

        protected HttpImageView(IntPtr javaReference, JniHandleOwnership transfer)
            : base(javaReference, transfer)
        {
        }

        public MvxDynamicImageHelper<Bitmap> Image { get { return this._imageHelper; } }

        private void ImageHelperOnImageChanged(object sender, MvxValueEventArgs<Bitmap> mvxValueEventArgs)
        {
                this.SetImageBitmap(mvxValueEventArgs.Value);
                this.Invalidate();
        }
    }