How to start shared element transition using Fragments?

Question

I am trying to implement transitions between fragments which have \"shared elements\" as described in the new material design specs. The only method I can find is the Activi

Answer 1

This should be a comment to the accepted answer, as I am unable to comment on it.

The accepted answer (by WindsurferOak and ar34z) works, except for a "minor" problem which caused a null pointer exception when navigating up with the backStack. It seems that setSharedElementReturnTransition() should be called on the target fragment instead of the original fragment.

So instead of:

setSharedElementReturnTransition(TransitionInflater.from(getActivity()).inflateTransition(R.transition.change_image_transform));

it should be

fragment.setSharedElementReturnTransition(TransitionInflater.from(getActivity()).inflateTransition(R.transition.change_image_transform));

https://github.com/tevjef/Rutgers-Course-Tracker/issues/8