Is there some sort of default animation that feels...

# compose-android

[Alex Styl]

Is there some sort of default animation that feels native to Android while using the nav lib on android?

I see that it defaults to a fade which looks generic

[Tgo1014]

I'm using this one here from @Stylianos Gakis and for me is the most non intrusive animation that looks the best

[Alex Styl]

I have my own version of that for the demo app of Unstyled (looks like the vid), but was wondering if there is any defaults I can use

transition.mov

[Tgo1014]

With the new Expressive would be great if they introduced some nice new animation 😅

[Alex Styl]

i agree but that's a different topic

[Chris Sinco [G]]

Crossfade is the unopinionated default for Android, meant to be customized.

[Chris Sinco [G]]

If you want something that feels more like what you see in Android system apps, I think the older Material motion transitions would work well.

[Alex Styl]

@Chris Sinco [G] how can I use that without coding it myself?

[Ian Lake]

A Material3 Motion/transition subsystem (e.g., implementations of the Material motion specs) have been on the backlog of the Compose Roadmap for a while now: https://developer.android.com/jetpack/androidx/compose-roadmap#core-libraries

Without that, you would have to write them yourself

[Chris Sinco [G]]

I'm not sure Alex needs a whole subsystem. I interpreted it as more tasteful transitions via customizing animationSpec that matches Material specs

[Chris Sinco [G]]

I did these some time ago for Material2: https://gist.github.com/c5inco/796edc5d88e8561872380b61e6089c04

[Ian Lake]

That roadmap item is for the Material team to provide exactly that - pre built transitions that match the specs. That is what doesn't exist yet

[Chris Sinco [G]]

Or some code I put together looking at Material3 specs: https://github.com/c5inco/compose-pokedexer/blob/main/app%2Fsrc%2Fmain%2Fkotlin%2Fdes%2Fc5inco%2Fpokedexer%2Fui%2Fcommon%2FTransitions.kt#L103

[Chris Sinco [G]]

That is what doesn't exist yet

Yes and it's been several years now so not sure it's ever really coming. There is the recent expressive theming just launched, but I believe that assumes you are using Material 3 Expressive components