retainManagedRetainedValuesStore

@Composable
fun retainManagedRetainedValuesStore(): ManagedRetainedValuesStore

import androidx.compose.animation.AnimatedContent
import androidx.compose.runtime.Composable
import androidx.compose.runtime.retain.LocalRetainedValuesStoreProvider
import androidx.compose.runtime.retain.retain
import androidx.compose.runtime.retain.retainManagedRetainedValuesStore

@Composable
fun RetainedAnimatedContent(active: Boolean, content: @Composable () -> Unit) {
    // Create a RetainedValuesStore. It will be added as a child to the current store and start
    // retaining exited values when the parent does. On Android, this store will implicitly
    // survive and forward retention events caused by configuration changes.
    val retainedValuesStore = retainManagedRetainedValuesStore()
    AnimatedContent(active) { targetState ->
        if (targetState) {
            // Install the RetainedValuesStore over the child content
            LocalRetainedValuesStoreProvider(retainedValuesStore) {
                // Values retained here will be kept when this content is faded out,
                // and restored when the content is added back to the composition.
                content()
            }
        }
    }
}