public override void LayoutSubviews()
{
base.LayoutSubviews();
var parentView = ViewForPicker ?? this.Superview;
var parentH = parentView.Frame.Height;
pickerView.Frame = new RectangleF(0, parentH - pickerView.Frame.Height, parentView.Frame.Size.Width, pickerView.Frame.Height);
closeBtn.Frame = closeBtn.Frame.SetLocation(new PointF(pickerView.Bounds.Width - 32, pickerView.Bounds.Y));
pickerView.BringSubviewToFront(closeBtn);
}
