Flutter Navigation

Scope: Design navigation as product architecture and validate UX with measurable release criteria.

Navigation defines discoverability and task completion speed. UX flow quality depends on route design, state restoration, and predictable back-stack behavior.

Route Map

  • Define route ownership by feature domain.
  • Separate public/authenticated flows.
  • Document deeplink routes with required params.
GoRouter(
  routes: [
    GoRoute(path: '/', builder: (_, __) => const HomePage()),
    GoRoute(path: '/orders/:id', builder: (_, state) {
      final id = state.pathParameters['id']!;
      return OrderDetailsPage(orderId: id);
    }),
  ],
);

Flows

Forms

  • Show inline validation before submission.
  • Use actionable error messages with retry options.
  • Preserve user input after recoverable failures.

Loading feedback

Use skeletons/progress states for async screens and avoid blank transitions that hide system status.

Deep Links

Deeplink URLs should be stable contracts across app versions whenever possible.

State restoration

Restore critical navigation state for interrupted user flows (checkout, onboarding, multi-step forms).

Release

Checklist

  1. All critical flows test-covered (widget/integration).
  2. Crash reporting and analytics events verified.
  3. Accessibility checks for labels, focus order, and touch targets.
  4. Performance profile on representative devices.

Engineering Notes

Maintain a flow catalog per release with route entry points, expected outcomes, failure handling, and metrics instrumentation.

Common Mistakes

  • Treating navigation as ad-hoc push/pop calls without route strategy.
  • No deeplink tests for externally-triggered screens.
  • Shipping without defined failure UX for network-dependent flows.

Practice Scope

Implement a multi-step flow with deep links, state restoration, validation errors, and a release checklist artifact.

Back to roadmap: Flutter Roadmap