iOS - Get container view content dynamic height

Question

In my application using ContainerView, which contains below Things

• StackView
  • UIView
  • TableView
  • UIView

In some cases, I have to hide views, tableview. With below settings, I am able to show the container view with dynamic height

• view.translatesAutoresizingMaskIntoConstraints = false
• With UITableView contentSize observer by changing tableview height.

But here I am unable to get the dynamic height of the containerView content.

I have tried below options to get container view content height but no luck

• containerView.frame.size.height
• containerView.bounds.size.height
• stackView.frame.size.height
• stackView.bounds.size.height
• using setNeedsLayout() with containterView, stackView before getting height
• calling layoutIfNeeded() with containterView, stackView before getting height
• trying to get containView, stackView height in override func viewDidLayoutSubviews(), override func viewWillLayoutSubviews()

Answer 1

Finally found an answer, below are the steps to achieve the solution

• for StackView we have to set the bottom constraint as >= 0.
• After hiding any view within the StackView, we have to apply stackView.setNeedsLayout(), stackView.layoutIfNeeded() these on StackView
• Now if you print the stack view frame it will show the updated frame result.