language_helper 0.0.4

Make it easier for you to implement multiple languages into your app.

Language Helper

Make it easier for you to implement multiple languages into your app.

Usage

Create the data:

LanguageData data = {
  LanguageCodes.en: {
    'Hello': 'Hello',
    'Change language': 'Change language',
  },
  LanguageCodes.vi: {
    'Hello': 'Xin Chào',
    'Change language': 'Thay đổi ngôn ngữ',
  }
};

Initialize the data:

LanguageHelper.instance.initialize(
    data: data,
    defaultCode: LanguageCodes.en, // Optional. Default is set to the first language of [data]
    forceRebuild: true, // Rebuild all the widgets instead of only root widgets
    isDebug: true, // Print debug log. Default is set to false
);

Get text:

final text = LanguageHelper.instance.translate('Hello');

Use extension:

final text = 'Hello'.tr;

Use builder to rebuild the widgets automatically on change:

• For all widget in your app:

@override
Widget build(BuildContext context) {
  return LanguageNotifier(builder: (context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text('Hello'.tr),
        ),
        body: Center(
          child: Column(
            children: [
              Text('Hello'.tr),
              ElevatedButton(
                onPressed: () {
                  LanguageHelper.instance.change(LanguageCodes.vi);
                },
                child: Text('Change language'.tr),
              ),
            ],
          ),
        ),
      ),
    );
  });
}

• For specific widget:

LanguageNotifier(
    builder: (context) {
        return Text('Hello'.tr);
    },
),

You can analyze the missing texts for all language with this function:

LanguageHelper.instance.analyze();

This function will be automatically called in initial when the isDebug is true.

Here is the result from the Example:

flutter: [Language Helper]
flutter: [Language Helper] ==================================================
flutter: [Language Helper]
flutter: [Language Helper] Analyze all languages to find the missing texts...
flutter: [Language Helper] Results:
flutter: [Language Helper]   LanguageCodes.en:
flutter: [Language Helper]     This text is missing in `en`
flutter: [Language Helper]
flutter: [Language Helper]   LanguageCodes.vi:
flutter: [Language Helper]     This text is missing in `vi`
flutter: [Language Helper]
flutter: [Language Helper] ==================================================
flutter: [Language Helper]

Additional Information

• No matter how many LanguageNotifier that you use, the plugin only rebuilds the outest (the root) widget of LanguageNotifier, so it improves a lot performance. And all LanguageNotifier widgets will be rebuilt at the same time. This setting can be changed with forceRebuild parameter in both initial for global setting and LanguageNotifier for local setting.
• The LanguageCodes contains all the languages with additional information like name in English (name) and name in native language (nativeName).
• This is the very first state so it may contain bugs or issues.