FYI, the `transitionDefinition` based transitions ...

# compose

[Doris Liu]

FYI, the transitionDefinition based transitions have been deprecated in alpha 11. The replacements are: updateTransition and rememberInfiniteTransition for the finite and infinite use cases, respectively. I know it's a large amount of API change. 😅 Hopefully, the new API is more straightforward to use. If you have any questions about them, or any issue with your migration, please let me know. I'm happy to help. 🙂

[Rafs]

This is the first time I am happy to hear about a deprecation announcement from android, however it will annoy many developers 😃😃😃😃

[Adriano Celentano]

just read through the docs, looks really nice 🥳

[BenjO]

just migrated to the new API for one of my composable. the samples provided helped a lot and code is now a lot more readable

[rsktash]

Hi @Doris Liu How can we call suspend functions from inside Modifier.drawBehind scope?

[Doris Liu]

@rsktash Are you trying to call Animatable.animateTo ? First rememberCoroutineScope from the composable, and launch a coroutine in the modifier similar to this: https://cs.android.com/androidx/platform/frameworks/support/+/androidx-main:compose/[…]lingDemo.kt;drc=b40ab8e06820b1c02795daca34142fd3c482dc1c;l=58

[Doris Liu]

The CoroutineScope returned from rememberCoroutineScope effectively scopes the lifecycle of the animation to the composable. When the composable leaves composition, animation will be automatically cancelled as a result of the CoroutineScope getting cancelled. 🙂

[Rafs]

What is the replacement for onStateChangeFinished from the old transitions api. It was a cool way to know when the state transition was completed.

[Doris Liu]

It can be achieved by checking the Transition.currentState against Transition.targetState. They are the same when state transition is completed.

[rsktash]

@Doris Liu Thank you You are very helpful

[Tash]

Loving these Transition APIs!

[rsktash]

Hi @Doris Liu We are having issue when using crossfade animation. https://issuetracker.google.com/u/0/issues/178729296

Thank you

[Doris Liu]

@rsktash Are you building against alpha 11 or a more recent compose build? If you are having the issue on the same compose desktop build as noted in the issue linked above, we have a fix for it in the pipeline. If you see the same behavior on alpha 11, please add that info to the bug.
(For future reference, it's recommended to start a separate thread for a separate topic like this. That way more people would see your question, and you could potentially get help from them sooner than when I get to it. 🙂 )