UI State Management

UI state management separates durable render state from one-shot events.

Pattern

ViewModels follow BaseViewModel<UiState, Event>.

• UiState: persistent state used to render the screen
• Event: one-shot side effects such as navigation or snackbar

Example

data class LoginUiState(
    val email: String = "",
    val password: String = "",
    val isLoading: Boolean = false,
)

Use lifecycle-aware collection:

val uiState by viewModel.uiState.collectAsStateWithLifecycle()

Checklist

• [ ] UiState is immutable.
• [ ] One-shot effects are modeled as Event.
• [ ] UI uses collectAsStateWithLifecycle().