Constraint Layout Vertical Align Center

Question

How to vertically align and center objects in constraint layout? It is possible to align vertically or horizontally but I have not found a way to center at the same time bes

Answer 1

It's possible to set the center aligned view as an anchor for other views. In the example below "@+id/stat_2" centered horizontally in parent and it serves as an anchor for other views in this layout.

Here's how it works on smallest smartphone (3.7 480x800 Nexus One) vs largest smartphone (5.5 1440x2560 Pixel XL)