updateTransition for Coordinated Motion
Animate several values from one state.
updateTransition for Coordinated Motion is a free Jetpack Compose Academy lesson on CoddyKit — lesson 3 of 4. You can read the complete lesson below for free — then practise it hands-on in the browser with a built-in code editor and a 24/7 AI tutor. It is part of the Jetpack Compose Academy learning path, one of 4 lessons in the course, and your progress syncs across the web and the CoddyKit app.
Animate Many Values Together
When several properties should change as one state shifts, you want them in sync. updateTransition coordinates many animations from a single state. ✨
Start From a State
Create a transition by handing updateTransition your current state. Compose watches it and drives every child animation when the state changes.
val transition = updateTransition(targetState = expanded)Derive Animated Values
Ask the transition for each value with animateDp, animateColor, and friends. You give a lambda mapping each state to its target.
val size by transition.animateDp { if (it) 200.dp else 80.dp }Many Values, One Source
Add as many child animations as you like from the same transition. Size, color, and corner radius all change together from one boolean.
val corner by transition.animateDp { if (it) 0.dp else 24.dp }Perfectly Coordinated
Because they share one transition, the values stay in lockstep. There is no risk of size finishing before color, which can happen with separate animateAsState calls.
Use the Values in Modifiers
Read each animated value just like normal state and apply it. The whole element morphs smoothly as the transition runs every frame.
Box(Modifier.size(size).clip(RoundedCornerShape(corner)))Per-Value Timing
Each child can have its own transitionSpec. Make color snap fast while size eases slowly, all still triggered by the same state change.
transition.animateDp(transitionSpec = { tween(600) }) { ... }More Than Two States
Your state can be an enum, not just a boolean. Map each case to a target and the transition animates between any of them.
enum class BoxState { Collapsed, Half, Expanded }Inspect Current and Target
The transition exposes currentState and targetState. You can check whether motion is still in flight or has settled on the goal.
When to Reach for It
Pick updateTransition when one event should drive a set of coordinated changes, like expanding a card while its color and elevation shift in unison. 🎬
Lighter Than Many Calls
Grouping animations under one transition is cleaner and easier to reason about than juggling several independent animate*AsState values.
Quick Check
What is the main benefit of updateTransition over separate animate*AsState calls?
Recap: One State, Many Motions
You learned updateTransition: derive several animated values from one state so they move in perfect sync, each with its own timing. 🎉
Frequently asked questions
Is the “updateTransition for Coordinated Motion” lesson free?
Yes — the full text of “updateTransition for Coordinated Motion” is free to read here on the web, and the Jetpack Compose Academy course includes 4 lessons in total. To practise it interactively (a built-in code editor and a 24/7 AI tutor) and unlock the rest of the Jetpack Compose Academy course, upgrade to CoddyKit PRO.
What will I learn in “updateTransition for Coordinated Motion”?
Animate several values from one state. You practise Jetpack Compose Academy with hands-on code you run directly in the browser, and a 24/7 AI tutor answers your questions as you work through the lesson.
Do I need any experience to start Jetpack Compose Academy?
No prior experience is required. Jetpack Compose Academy on CoddyKit is structured for beginners through advanced learners; this is — lesson 3 of 4, so you can start here or from the beginning and move at your own pace.
How long does the “updateTransition for Coordinated Motion” lesson take?
Most CoddyKit lessons take about 5–10 minutes. Each one is bite-sized and interactive, so you make steady progress and pick up exactly where you left off across the web and the app.
Can I write and run code in this Jetpack Compose Academy lesson?
Yes. Every Jetpack Compose Academy lesson includes a built-in code editor, so you write and run real code right in your browser and get instant AI feedback — no local setup required.
All lessons in this course
- animate*AsState for Simple Tweens
- AnimatedVisibility & Crossfade
- updateTransition for Coordinated Motion
- Gesture-Driven Animations