Android - Title Background

TitleBackground..cs

  void UpdateTitleViewLayoutBackground(LinearLayout titleViewLayout, string backgroundResource, Android.Graphics.Drawables.Drawable defaultBackground)
  {
                if (!string.IsNullOrEmpty(backgroundResource))
                {
                    titleViewLayout?.SetBackgroundResource(this.Context.Resources.GetIdentifier(backgroundResource, "drawable", Android.App.Application.Context.PackageName));
                }
                else
                {
                    titleViewLayout?.SetBackground(defaultBackground);
                }
  }