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通常我这样定义supportedLocales：

supportedLocales: [
        const Locale.fromSubtags(languageCode: 'en'),
        const Locale.fromSubtags(languageCode: 'fr'),
        const Locale.fromSubtags(languageCode: 'ja'),
        const Locale.fromSubtags(languageCode: 'de'),
        const Locale.fromSubtags(languageCode: 'it'),
        const Locale.fromSubtags(languageCode: 'es'),
      ],

但是如何从我已经设置为单例的列表中声明它：

List<String> listlang = ['en', 'fr', 'ja', 'de', 'it', 'es'];

问候迈克

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