Android Compose: Handling Device Rotation with Ease

Understanding Device Rotation in Compose

One of the challenges developers often face in Android app development is handling device rotations. This can lead to unexpected behavior if not addressed properly. In Jetpack Compose, however, this process becomes much more streamlined.

You’re right, in Jetpack Compose, you generally don’t need to manually handle onSaveInstanceState for simple UI state. Compose takes care of saving and restoring the state of composables automatically by using rememberSaveable.

The Power of rememberSaveable

Compose’s rememberSaveable composable function is a powerful tool for automatically saving and restoring UI state across configuration changes, including device rotations. This means you no longer need to manually handle onSaveInstanceState for simple UI states.

How it Works

When you use rememberSaveable to wrap a composable, Compose will automatically save the composable’s state when the configuration changes. When the composable is recomposed, Compose will restore the saved state, ensuring that your UI remains consistent.

Example:

@Composable
fun MyComposable() {
    var counter by…