Height of contentView of UIScrollView based on inside content using Storyboard

For me, Daniel's solution was very helpful but not working. Here are the updated steps :

1) In the storyboard, add a scroll view and constrain its edges to the edges of the main view or in whatever way is appropriate

2) Inside the scroll view, add a plain old UIView as a container. Constrain it to all 4 edges of the scroll view, BUT ALSO add an equal width constraint relative to scroll view's parent (highest view), and an equal height constraint to the scroll view's parent

3) Very important: set a low priority for the equal height constraint, e.g. 250.

I've been able to get dynamic scroll views working entirely from storyboards, no code, with the following steps:

1) In the storyboard, add a scroll view and constrain its edges to the edges of the main view or in whatever way is appropriate

2) Inside the scroll view, add a plain old UIView as a container. Constrain it to all 4 edges of the scroll view, BUT ALSO add an equal width constraint relative to scroll view, and an equal height constraint to the scroll view

3) Very important: set a low priority for the equal height constraint, e.g. 250.

4) inside the container view you added in step 2, add your 3 modules. Constrain the top edge of the first module to the top of the container view, constrain the bottom edge of the last module to the bottom of the container view, and constrain all the in-between modules to the preceding module in the chain. This should give you your chain of unbroken vertical constraints inside the container view. You will also need to add whatever appropriate x positioning / width setting constraints to each module.

5) Build and run! Your scroll view content size should automatically be equal to the total height of all modules plus the spacing between them, and changing the module contents dynamically will update the scroll view content size via auto layout rather than requiring explicit code to calculate and update.