Spread-chain group of elements with ConstraintLayout
问题 I'm having an issue to spread-chain 2 groups of elements with Constraint Layout. I understand the goal of this new layout is to use a flat hierarchy so I'd like to avoid putting my elements inside a child layouts. I looked at some awesome resources like constraintlayout.com but couldn't figure out how to make it work for my specific case - which I think can be common.. Here is an image of what I'd like to achieve. In red, spaces 1, 2 and 3 need to have the same height (just like spread chain)