How to use new features in constraint layout 1.1?

Question

Does anyone know how to use new features in constraint layout 1.1, namely barriers and percent-based dimensions? There is absolutely no documentation available online, and t

Answer 1

Here is the official doc that perfectly explains all new features added in constraint layout 1.1

But one more thing to note for Groups is that if you give your view as a reference id in Group, its individual visibility will not work, for that to work you will need to create a separate Group for it. Do correct me if I am wrong. Here is the sample code which uses Group, as you can see here view1's visibility will not work as it is assigned to a group.

Now to overcome this we can create a new group to handle view1's visibility, as given below.

This is the workaround I came across, if there is such scenario where we want to handle a group's visibility as well as individual view's visibility in different cases.