Standards for Strings, Drawables, and Localization. Use when managing Android resources, drawables, or adding localization support. (triggers: strings.xml, **/*Screen.kt, stringResource, plurals, R.string)
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---
name: android-resources
description: 'Standards for Strings, Drawables, and Localization. Use when managing Android resources, drawables, or adding localization support. (triggers: strings.xml, **/*Screen.kt, stringResource, plurals, R.string)'
---
# Android Resources Standards
## **Priority: P2**
## Implementation Guidelines
### Strings & Localization
- **Define in XML**: All UI text must be in **`strings.xml`**. Use **`stringResource(R.string.*)`** in Compose.
- **Formatting**: Use **format args (`%s`, `%d`)** instead of concatenation. Use **`plurals`** (e.g., `<item quantity="one">`) for quantity-sensitive strings.
- **Parity**: Maintain **Localizable.strings (iOS)** parity where possible for shared features.
- **Dynamic Access**: Use **`context.getString(R.string.id, args)`** for dynamic lookups.
### Assets / Drawables
- **Formats**: Prefer **VectorDrawables (`.xml`)** over RASTER images. Scale cleanly across density buckets (mdpi, hdpi, xhdpi, xxhdpi).
- **Plurals**: Use `resources.getQuantityString(R.plurals.items, count, count)` for quantity-sensitive strings.
- **Dark Mode**: Support **`Configuration.UI_MODE_NIGHT`** via the **`values-night/`** qualifier or **`MaterialTheme`** tokens. Never use hardcoded hex colors in Layouts/Composables.
- **Themes**: Map all colors to **Design Tokens** (primary, surface, error) for consistent skinning.
## Anti-Patterns
- **No String Concatenation in UI**: Use format args (`%s`, `%d`) in strings.xml instead.
- **No Hardcoded UI Text**: All visible strings must be defined in strings.xml.
## References
- [XML Structure](references/implementation.md)
