public static void SetTextUnderline(this Android.Widget.TextView textView, int resId)
{
Guard.ThrowIfNull(textView, nameof(textView));
textView.SetText(resId);
var span = new SpannableString(textView.Text);
span.SetSpan(new UnderlineSpan(), 0, textView.Text.Length, 0);
textView.SetText(span, TextView.BufferType.Spannable);
}