void SetPreviousButtonHidden(bool hide)
{
if (hide)
{
NSLayoutConstraint nextBtnLeadingConstraint = null;
foreach (NSLayoutConstraint constraint in ButtonsView.Constraints)
{
if (constraint.SecondItem == NextBtn && constraint.SecondAttribute == NSLayoutAttribute.Leading)
{
nextBtnLeadingConstraint = constraint;
break;
}
}
if (nextBtnLeadingConstraint == null)
{
ButtonsView.LeadingAnchor.ConstraintEqualTo(NextBtn.LeadingAnchor, 0).Active = true;
}
}
else
{
foreach (NSLayoutConstraint constraint in ButtonsView.Constraints)
{
if (constraint.SecondItem == NextBtn && constraint.SecondAttribute == NSLayoutAttribute.Leading)
{
ButtonsView.RemoveConstraint(constraint);
break;
}
}
}
}