--- name: flutter-navigation description: Implement navigation patterns with go_router, deep linking, and named routes in Flutter. Use when building navigation, deep linking, or routing. metadata: triggers: files: - '**/*_route.dart' - '**/*_router.dart' - '**/main.dart' keywords: - Navigator - GoRouter - routes - deep link - go_router - AutoRoute --- # Flutter Navigation ## **Priority: P1 (OPERATIONAL)** ## Implementation Workflow 1. **Choose router** — Use `go_router` for modern, declarative routing. 2. **Define routes** — Use constants or code generation for route paths; never hardcode strings. 3. **Configure deep links** — Set up `AndroidManifest.xml` and `Info.plist` for URL schemes. 4. **Validate parameters** — Check parameters in `redirect` logic before navigation. 5. **Preserve tab state** — Use `StatefulShellRoute` or `IndexedStack` for bottom navigation. ### Route Configuration Example See [implementation examples](references/implementation.md) for GoRouter configuration with parameter validation and redirects. [Routing Patterns & Examples](references/routing-patterns.md) ## Anti-Patterns - **No Manual URL Parsing**: Use `go_router` built-in parsing instead of `Uri.parse(url)` - **No Manual Tab State Management**: Use `IndexedStack` or `StatefulShellRoute` to preserve state - **No Unvalidated Deep Link IDs**: Always check existence in `redirect` - **No Hardcoded Route Strings**: Use constants (e.g., `Routes.orders`) or code-gen instead of `'/orders'` ## Related Topics flutter-design-system | flutter-notifications | mobile-ux-core