Hi. Is there something built-in for shared transition animation between screens?

Short answer: not yet. But it's a high priority item on our roadmap. 🙂

Thx. Is there a public roadmap for Compose?

This particular work item is tracked here: https://issuetracker.google.com/172112072 I'm not aware of other forms of public roadmap for Compose.

Is it going to be separated from navigation component?

Is there a particular reason for preferring it to be separate from the navigation component? 🙂

I’m using decompose from @Arkadii Ivanov for navigation 😀

The idea I have in mind is using

Transition

as a vehicle for all the animations in (any level of the) children, including shared element, during the screen/destination change. `Transition`'s state change can be observed by navigation (or anyone else) and therefore can be used as a signal for when things should be destructed. Looking at the snippet above, it shouldn't be hard for decompose to support such a concept. We need to experiment with that idea some more and build necessary pieces in

Transition

to support that. We'll keep your use case in mind when we build it. 🙂 Animation features such as shared element will most likely be in the animation library, while navigation component being a client of it.

Decompose supports animations with

Crossfade

-like API. I hope there will be more animations like Crossfade.

Crossfade

is actually now built on

Transition

. Glad to hear that Decompose already supports that. I'm hoping to build more layout animation with

Transition

. Stay tuned. 🙂