When I shrink a Card using a tween animation, how ...

# compose

[Christian Maier]

When I shrink a Card using a tween animation, how can change the size another card as soon as the tween animation is finished? Traditionally, I’d think of an end-Listener and start an animation on another View

[Jeisson Sáchica]

How are you firing the animation? the animate composable takes an endListener: (Float) -> Unit

[Jeisson Sáchica]

Or if you're using an AnimatedFloat , the animateTo method takes an onEnd: (AnimationEndReason, T) -> Unit

[Christian Maier]

I’m using a transitionDefinition

[Christian Maier]

Than I’m starting a transition() with that definition

[Christian Maier]

Can I achieve that with these tools?

[Jeisson Sáchica]

Great! Then there is an optional parameter that composable takes which is a onStateChangeFinished: (T) -> Unit

[Jeisson Sáchica]

So if you have let's say t wo states: Visible and Collapsed, that callback will be called when the animation changes from one to the other

[Christian Maier]

I should’ve seen that. 😕

[Christian Maier]

Perfect, just what I needed!

[Christian Maier]

Thank you very much!

[Jeisson Sáchica]

No problem

[Christian Maier]

I need to pay more attention but the signatures, but some are really long. Anyways, bad excuse!

[Jeisson Sáchica]

No worries, one can easily miss them among that many parameters. Even the definition of the transition states // TODO: The list of params is getting a bit long. Consider grouping them. So that will most probably change for the better in the future