react-native-i18n

Integrates I18n.js with React Native. Uses the device's locale as default.

Installation

$ npm install react-native-i18n --save

After installing the npm package you need to link the native modules. You can do so using rnpm.

$ rnpm link react-native-i18n

Or you can do it manually as follows:

iOS

Add RNI18n.xcodeproj to Libraries and add libRNI18n.a to Link Binary With Libraries under Build Phases. More info and screenshots about how to do this is available in the React Native documentation.

Android

Add react-native-i18n to your ./android/settings.gradle file as follows:

include ':app', ':react-native-i18n'
project(':react-native-i18n').projectDir = new File(rootProject.projectDir, '../node_modules/react-native-i18n/android')

Include it as dependency in ./android/app/build.gradle file:

dependencies {
    ...
    compile project(':react-native-i18n')
}

Finally, you need to add the package within the ReactInstanceManager of your MainActivity (./android/app/src/main/java/your/bundle/MainActivity.java):

import com.i18n.reactnativei18n.ReactNativeI18n;  // <---- import this one

...


@Override
protected void onCreate(Bundle savedInstanceState) {
	...

	mReactInstanceManager = ReactInstanceManager.builder()
	.setApplication(getApplication())
	.addPackage(new ReactNativeI18n())  // <---- add this line
	.build();

	...
}

...

After that, you will need to recompile your project with react-native run-android.

Usage

var I18n = require('react-native-i18n');

var Demo = React.createClass({
  render: function() {
    return (
      <Text>{I18n.t('greeting')}</Text>
    )
  }
});

// Enable fallbacks if you want `en-US` and `en-GB` to fallback to `en`
I18n.fallbacks = true;

I18n.translations = {
  en: {
    greeting: 'Hi!'
  },
  fr: {
    greeting: 'Bonjour!'
  }
}

This will render Hi! for devices with the English locale, and Bonjour! for devices with the French locale.

Fallbacks

When fallbacks are enabled (which is generally recommended), i18n.js will try to look up translations in the following order (for a device with en_US locale):

en-US
en

Note: iOS locales use underscored (en_US) but i18n.js locales are dasherized (en-US). This conversion is done automatically for you.

I18n.fallbacks = true;

I18n.translations = {
  'en': {
    greeting: 'Hi!'
  },
  'en-GB': {
    greeting: 'Hi from the UK!'
  }
}

For a device with a en_GB locale this will return Hi from the UK!', for a device with a en_US locale it will return Hi!.

Device's locale

You can get the device's locale with the RNI18n native module:

var deviceLocale = require('react-native').NativeModules.RNI18n.locale

Returns en_US. You can also do:

var I18n = require('react-native-i18n');
var deviceLocale = I18n.locale;

Returns en-US.

I18n.js documentation

For more info about I18n.js methods (localize, pluralize, etc) and settings see its documentation.

Licence

MIT

pop-xiaodong/react-native-i18n