Update 5 April '18 :

react-native-i18n-complete-corrected

This npm includes a correction over react-native-i18n-complete npm from given link https://www.npmjs.com/package/react-native-i18n-complete :-

Problem in Android : -

1. In “react-native-i18n-complete” library there is the entry of android:icon="@mipmap/ic_launcher" in “AndroidManifest.xml”, because of this entry there is a confliction for android:icon b/w react-native-i18n-complete’s AndroidManifest.xml file and your main application AndroidManifest.xml file.

Resolution for Android : -

1. Removed the entry of android:icon="@mipmap/ic_launcher" from “AndroidManifest.xml” because most of the time every react native have unique android:icon in “android/app/src/main/AndroidManifest.xml” file.

react-native-i18n

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

Installation

$ npm install react-native-i18n-complete-corrected --save

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

$ rnpm link react-native-i18n-complete-corrected

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

• android/settings.gradle

...
include ':react-native-i18n-complete-corrected'
project(':react-native-i18n-complete-corrected').projectDir = new File(settingsDir, '../node_modules/react-native-i18n-complete-corrected/android')

• android/app/build.gradle

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

• register module (in MainActivity.java)

...

import rni18n.mobile.laplanete.ca.rni18n.RNI18nPackage; // <--- import

public class MainActivity extends Activity implements DefaultHardwareBackBtnHandler {
	...

    /**
         * A list of packages used by the app. If the app uses additional views
         * or modules besides the default ones, add more packages here.
         */
        @Override
        protected List<ReactPackage> getPackages() {
            return Arrays.<ReactPackage>asList(
                new MainReactPackage(),
                new RNI18nPackage()
            );
        }
}

Usage

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

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.

I18n.js documentation

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

Licence

MIT