Implement Jetpack Navigation Component with XML graphs and SafeArgs for type-safe fragment navigation. Use when working with XML-based navigation or SafeArgs in legacy Android projects.
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---
name: android-legacy-navigation
description: Implement Jetpack Navigation Component with XML graphs and SafeArgs for type-safe fragment navigation. Use when working with XML-based navigation or SafeArgs in legacy Android projects.
metadata:
triggers:
files:
- 'navigation/*.xml'
keywords:
- findNavController
- NavDirections
- navArgs
---
# Android Legacy Navigation Standards
## **Priority: P1**
## 1. Set Up Single-Activity Architecture
- Use one Host Activity with `NavHostFragment`.
- Enable SafeArgs plugin — MANDATORY for passing data between fragments.
See [XML graph & SafeArgs examples](references/implementation.md) for NavHostFragment setup.
## 2. Manage Navigation Graphs
- **Nested Graphs**: Modularize `navigation/` resources (e.g., `nav_auth.xml`, `nav_main.xml`) to keep graphs readable.
- **Deep Links**: Define explicit `<deepLink>` in graph, not AndroidManifest intent filters.
## 3. Navigate with SafeArgs
See [XML graph & SafeArgs examples](references/implementation.md) for type-safe navigation usage.
## Anti-Patterns
- **No Raw String Bundle Keys**: Use SafeArgs generated type-safe classes.
- **No Manual Fragment commit()**: Use NavController for all navigation.
## References
- [XML Graph & SafeArgs](references/implementation.md)
