Calculating contentSize for UIScrollView when using Auto Layout

Question

Here is a quick question about something which works, but could be written much better. I have a UIScrollView and a list of objects laid out inside, one under t

Answer 1

I also used constraints programmatically to dynamically modify UIScrollView's contentSize . I pretty much followed Shrikant's instructions but for step 2.1, I set centerX to the scrollViews.centerX rather than set the leading and trailing margins (No idea why the former works, while the latter doesn't). Then as a last step, after adding the final subview, I did the following:

contentView.layoutIfNeeded() //set a frame based on constraints
scrollView.contentSize = CGSize(width: contentView.frame.width, height: contentView.frame.height)

Hope this helps somebody in the future.