setCustomAnimations fade-in/out causes shared element flicker. The naming of these functions is really confusing but they work exactly the same for return transitions. postponeEnterTransition() and startPostponedEnterTransition() also work for return transitions If you do the transition on just the image, the card already be at its final position at the start of the transition.

To transition a CardView with an image, add both the card and the image as shared elementsĭoing the transition on just the CardView won’t dynamically scale the image during the transition. startPostponedEnterTransition should be called when the shared element on the restored fragment is fully rendered. Using the onSavedInstanceState() and onRestoreInstanceState() methods of the nested RecyclerView, the state needs to be manually restored. replace() means that the fragment to which we need to return has been destroyed and needs to be recreated through the fragment lifecycle. add() to add the view because that means the view will remain in memory.

Therefore the nested RecyclerView needs to be restored to it’s previous state before the transition is started. The shared element needs to be in view in both fragments when the transition takes place. In this case, the view that needs to be resumed contains a nested RecyclerView within the main RecyclerView. Properly resume the state of the fragment you return to with the return transition Postponing the transition will only work when you add setReorderingAllowed(true) to your fragment transition (see Android docs and the Reordering part of this blog post by Chris Banes for more context.) 4. When the content of the transition needs to be loaded before the transition can start, we need to use postponeEnterTransition(). Enable reordering allowed when postponing transitions Shared element transitions do not work when adding fragments, even to the same container. You cannot do shared element transitions with fragments in another container.

Fragments should be in the same container Wyko Rijnsburger About Feed Lessons Learned from implementing a Fragment to Fragment Shared Element transition ġ.

Android studio recyclerview flicker