205 lines
4.8 KiB
Markdown
205 lines
4.8 KiB
Markdown
<img src="https://cdn0.iconfinder.com/data/icons/material-design-ii-glyph/614/3010_-_Translate-512.png" width="100" align="left" />
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# react-native-i18n
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Integrates [I18n.js](https://github.com/fnando/i18n-js) with React Native. Uses the user preferred locale as default.
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<br/>
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<br/>
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## Installation
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**Using yarn ()**
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`$ yarn add react-native-i18n`
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**Using npm**
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`$ npm install react-native-i18n --save`
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NB: npm currently has an issue resolving git sub-dependencies.
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Check [this issue](https://github.com/AlexanderZaytsev/react-native-i18n/issues/101) for more informations.
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## Automatic setup
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After installing the npm package you need to link the native modules.
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If you're using React-Native < 0.29, install [rnpm](https://github.com/rnpm/rnpm) with the command `npm install -g rnpm` and then link the library with the command `rnpm link`.
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If you're using React-Native >= 0.29 just link the library with the command `react-native link`.
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If you're having any issue you can also try to install the library manually as follows.
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## Manual setup
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### iOS
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Add `RNI18n.xcodeproj` to **Libraries** and add `libRNI18n.a` to **Link Binary With Libraries** under **Build Phases**.
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[More info and screenshots about how to do this is available in the React Native documentation](http://facebook.github.io/react-native/docs/linking-libraries-ios.html#content).
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You also need to add the **localizations** you intend to support to your iOS project. To do that open your Xcode project:
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```
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$ open <your-project>.xcodeproj
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```
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And add the localizations you will support as shown here:
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### Android
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Add `react-native-i18n` to your `./android/settings.gradle` file as follows:
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```
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include ':app', ':react-native-i18n'
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project(':react-native-i18n').projectDir = new File(rootProject.projectDir, '../node_modules/react-native-i18n/android')
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```
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Include it as dependency in `./android/app/build.gradle` file:
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```
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dependencies {
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...
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compile project(':react-native-i18n')
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}
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```
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Finally, you need to add the package to your MainApplication (`./android/app/src/main/java/your/bundle/MainApplication.java`):
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```java
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import com.AlexanderZaytsev.RNI18n.RNI18nPackage; // <-- Add to ReactNativeI18n to the imports
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...
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@Override
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protected List<ReactPackage> getPackages() {
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return Arrays.<ReactPackage>asList(
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new MainReactPackage(),
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...
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new RNI18nPackage(), // <-- Add it to the packages list
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...
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);
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}
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...
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```
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After that, you will need to recompile your project with `react-native run-android`.
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**Note: You'll need to install Android build tools 25.0.2**
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## Usage
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```javascript
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import I18n from 'react-native-i18n'
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class Demo extends React.Component {
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render () {
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return (
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<Text>{I18n.t('greeting')}</Text>
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)
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}
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}
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// Enable fallbacks if you want `en-US` and `en-GB` to fallback to `en`
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I18n.fallbacks = true
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I18n.translations = {
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en: {
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greeting: 'Hi!'
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},
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fr: {
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greeting: 'Bonjour!'
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}
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}
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```
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This will render `Hi!` for devices with the English locale, and `Bonjour!` for devices with the French locale.
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## Usage with multiple location files
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```javascript
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// app/i18n/locales/en.js
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export default {
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greeting: 'Hi!'
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};
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// app/i18n/locales/fr.js
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export default {
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greeting: 'Bonjour!'
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};
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// app/i18n/i18n.js
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import I18n from 'react-native-i18n';
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import en from './locales/en';
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import fr from './locales/fr';
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I18n.fallbacks = true;
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I18n.translations = {
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en,
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fr
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};
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export default I18n;
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// usage in component
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import I18n from 'app/i18n/i18n';
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class Demo extends React.Component {
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render () {
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return (
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<Text>{I18n.t('greeting')}</Text>
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)
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}
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}
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```
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### Fallbacks
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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):
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- en-US
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- en
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**Note**: iOS 8 locales use underscored (`en_US`) but `i18n.js` locales are dasherized (`en-US`). This conversion is done automatically for you.
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```js
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I18n.fallbacks = true
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I18n.translations = {
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'en': {
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greeting: 'Hi!'
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},
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'en-GB': {
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greeting: 'Hi from the UK!'
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}
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}
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```
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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!`.
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### Device's locales
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You can get the user preferred locales with the `getLanguages` method:
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```js
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import { getLanguages } from 'react-native-i18n'
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getLanguages().then(languages => {
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console.log(languages) // ['en-US', 'en']
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})
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```
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### I18n.js documentation
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For more info about I18n.js methods (`localize`, `pluralize`, etc) and settings see [its documentation](https://github.com/fnando/i18n-js#setting-up).
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## Licence
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MIT
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