Does `AnimatedVisibility` have a finished listener...

# compose

[Chris Johnson]

Does AnimatedVisibility have a finished listener? I know it has MutableTransitionState where you can check if all the animations are done via isIdle but I guess I'm looking for an example of when to use that check. I assume it wouldn't be inside the AnimatedVisibility content composable and outside of it would make it get hit on every recomposition if I'm remembering the MutableTransitionState

[Andrew Neal]

Does AnimatedVisibility have a finished listener?

https://kotlinlang.slack.com/archives/CJLTWPH7S/p1619066721359200?thread_ts=1619032588.327500&cid=CJLTWPH7S

I know it has MutableTransitionState where you can check if all the animations are done via isIdle I guess I'm looking for an example of when to use that check

https://cs.android.com/androidx/platform/tools/dokka-devsite-plugin/+/master:testData/compose/samples/animation/samples/AnimatedVisibilitySamples.kt
A few sample show it being used with AnimatedVisibility.

[Chris Johnson]

This is incredibly helpful, thank you! I'll try out the DisposableEffect and the next link actually will help me solve an issue I was having with LazyColumn 😄

[Doris Liu]

DisposableEffect and MutableTransitionState are both good ways to get the signal for when the animation has finished. The latter also gives you the info on when the enter animation has finished.

One way to use MutableTransitionState is to set up a snapshotFlow , so you can observe when the initial/target state has changed. Here's an example: https://cs.android.com/androidx/platform/tools/dokka-devsite-plugin/+/master:testDat[…]/samples/animation/samples/AnimatedVisibilitySamples.kt;l=613