goneMargin is not respected in a wrap_content ConstraintLayout?

Question

I have a ConstraintLayout where its height is wrap_content.

I want its height to be able to collapse or expanding, according to its Child\'s he

Answer 1

Figured it out.

goneMargin is used to indicate the margin to a GONE target, instead of itself being GONE.

Therefore in fact I should put the goneMargin attributes in the Request Date instead of the large rectangle.