| name | app-locales |
| description | Add or update locales for this Flutter app, including ARB files, generated AppLocalizations, localized screenshot copy, and English/German screenshot verification. |
App Locales
Use this skill when adding a new app language, updating app copy across locales,
or changing localized screenshot text in this repository.
Workflow
- Inspect
l10n.yaml, lib/l10n/arb/app_en.arb, and the target
lib/l10n/arb/app_<locale>.arb.
- Add every new user-facing string to
app_en.arb first with an @key
description and placeholder metadata when needed.
- Add the same keys to each existing locale ARB. Keep placeholder names and
types identical to English.
- For a new locale:
- Create
lib/l10n/arb/app_<locale>.arb with @@locale.
- Translate every English key.
- Do not leave keys missing unless the user explicitly asks for a partial
locale.
- Run
flutter gen-l10n.
- Update code to use
context.l10n or generated AppLocalizations getters.
Do not hard-code user-facing strings in widgets or screenshot tests.
- If screenshot text changes, update
test/screenshots/screenshots_flow_test.dart to read from
AppLocalizations; only layout, deterministic sample state, and file-writing
logic should stay in the test.
Verification
Run these after locale work:
flutter gen-l10n
dart analyze test/screenshots/screenshots_flow_test.dart
SCREENSHOT_LOCALES=en,de task screenshots
If adding another screenshot locale, include it in SCREENSHOT_LOCALES, for
example:
SCREENSHOT_LOCALES=en,de,fr task screenshots
Check generated PNGs under build/screenshots/<locale>/.
Notes
task screenshots writes app-store-style PNGs through a widget-test harness,
not a full app run.- Widget tests need explicit font loading for readable text and icon glyphs;
preserve the font-loader setup in the screenshot test.
- Keep generated localization Dart files from
lib/l10n/arb/ in sync with ARB
changes.
