How to set up autolayout in Interface Builder to arrange views vertically as shown on image:
The way to do this is to have 2 invisible "spacer" views between you visible views.
You can't make spaces have equal height. But you use the "spacer" views and place them between your views (with 0 gap to the surrounding views).
Then you give these views equal heights and they will push your views around to centre the
My View with equal gap to the
Bottom View and
i.e. like this...
V:|[Top View][spacer1][My View][spacer2(==spacer1)][Bottom View]|
EDIT - Another way
I just thought of another way of doing this. You could have an invisible container
UIView that is between
Top View and
Bottom View with no gap.
Then you place
My View inside this invisible view and centre it vertically.