Just played with `AnimatedVisibility`. Really like...

# compose

[Vinay Gaba]

Just played with AnimatedVisibility. Really like how simple the API is and fits really well to a host of different use cases. Here is what I implemented to demonstrate list deletion with animation. Thanks for your work on this @Doris Liu 👏🏼

Here is the code with comments if anyone is interested - https://github.com/vinaygaba/Learn-Jetpack-Compose-By-Example/blob/master/app/src/main/java/com/example/jetpackcompose/animation/ListAnimationActivity.kt#L53

[Halil Ozercan]

I was going to try AnimatedVisibility to hide TopAppBar when content was scrolled but LazyColumnFor still doesn't share its scroll state. Maybe there is another way to achieve the same affect?

[Doris Liu]

Yes, scroll delta seems to be a part of the internal state at the moment. Perhaps it's worth filing a feature request to expose some of the scroll info?

[louiscad]

Does it support different interoplators?

[Doris Liu]

Yes, you could specify different interpolations via `AnimationSpec`s for fade/expand/shrink/slide

[Doris Liu]

Here are some examples: https://android.googlesource.com/platform/frameworks/support/+/refs/heads/androidx-master-dev/compose/animation/animation/samples/src/main/java/androidx/compose/animation/samples/AnimatedVisibilitySamples.kt

[Mehdi Haghgoo]

What is the ExperimentalAnimationApi annotation added to composables?

[Vinay Gaba]

It’s just for code health sake. Similar to the @Deprecated annotation, this annotation just notifies the user that it’s still an experimental API and will continue to evolve/change. It’s mostly for expectation setting.

[louiscad]

Very nice these AnimatedVisibility capabilities!