2020-06-21 locale flutter import 'dart:ui'; print(window.locale.countryCode); // => JP await S.load(window.locale); const locale = Locale.fromSubtags(languageCode: 'jp'); intl_jp.arbは ja_JPの方がいいかもしれない。 { "@@locale": "ja_JP", "settings": "設定", "next": "進む",