Android Legacy Navigation Standards

Priority: P1

Implementation Guidelines

Setup

• Single Activity: Use one Host Activity with a NavHostFragment.
• SafeArgs: MANDATORY for passing data between fragments.

Graph Management

• 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 (Nav handles them).

Anti-Patterns

• Bundle Keys: **No "strings"**: Use SafeArgs generated classes.
• Fragment Transations: **No Manual commit()**: Use NavController.

References

• XML Graph & SafeArgs