Mastering Side Effects in Jetpack Compose

If you're building modern Android apps with Jetpack Compose, understanding side effects is non-negotiable.
Compose is declarative, which means the UI can recompose many times — and that creates challenges if you trigger actions directly inside a Composable.

This is where side effects come in.

✔ Why Side Effects Matter

Actions like API calls, logging, toasts, or starting coroutines should not run during recomposition.
Compose gives us dedicated APIs to handle them properly:

🔹 LaunchedEffect

Run suspend functions safely when a key changes (or once).

🔹 DisposableEffect

Perfect for registering/unregistering listeners or other setup/cleanup logic.

🔹 SideEffect

Push Compose state to external objects.

🔹 rememberCoroutineScope

Launch coroutines from events like button clicks.

🔹 snapshotFlow

Turn Compose state into a Flow stream.

🔹 produceState

Convert async data sources directly into Compose State.

I’ve written a complete breakdown of each API with real-world examples from production-level Android apps. If you’re working with Compose seriously, this will save you from subtle but painful bugs.

Read the full article here.