Use autolayout to set dynamic UIView to match container view

Question

I have a UIView in IB that has another UIView within it, which I am using as a container view. In code, I create three different views and then animate the appropriate one

Answer 1

In the problem you state "my new subviews are not scaled to match the container view" - but from the description I think they are - the problem is that your container view has no fixed size.

I think that if you set your container view to have a fixed width and height that should do it, you may also need to call

[self.containerView layoutSubviews]

to force a resize after updating the constraints.

I'd also suggest you swap to using the text based formatting, you could swap out your lines above for something like "H:|[newSubview]|" and "V:|[newSubview]|"