Flutter localization

Skill ComeOnOliver/skillshub/skills/HoangNguyen0403/agent-skills-standard/flutter-localization

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Install

npx -y skills add ComeOnOliver/skillshub --skill flutter-localization

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Standards for multi-language support using easy_localization with CSV or JSON. Use when adding localization or multi-language support to Flutter apps. (triggers: **/assets/translations/*.json, **/assets/langs/*.csv, main.dart, localization, multi-language, translation, tr(), easy_localization, sheet_loader)

SKILL.md

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Localization

Priority: P1 (STANDARD)

Consistent multi-language support using easy_localization.

Format Selection

CSV (Recommended for teams with translators):
- Non-technical editors can update easily
- Native Google Sheets compatibility via sheet_loader_localization
- Store in assets/langs/ (common convention)
JSON (Developer-friendly):
- Nested structure support (e.g., items_count.zero)
- IDE validation and autocomplete
- Store in assets/translations/

Both formats work identically with easy_localization.

Structure

# CSV Format (Google Sheets workflow)
assets/langs/langs.csv

# OR JSON Format (nested keys)
assets/translations/
├── en.json
└── vi.json

Implementation Guidelines

Bootstrap: Wrap root with EasyLocalization. Always use await EasyLocalization.ensureInitialized().
Lookup: Use .tr() extension on strings (e.g., 'welcome'.tr()).
Locale: Change via context.setLocale(Locale('code')).
Params: Use {} placeholders; pass via tr(args: [...]).
Counting: Use plural() for quantities.
Sheets Sync: Use sheet_loader_localization to auto-generate CSV/JSON from Google Sheets.

Anti-Patterns

Hardcoding: No raw strings in UI; use keys.
Manual L10n: Avoid standard Localizations.of; use GetX or easy_localization context methods.
Desync: Keep keys identical across all locale files.

Reference & Examples

For setup and Google Sheets automation: See references/REFERENCE.md.