Display translated content

Transifex Native will automatically display content in the language currently selected in your application.

In order to allow changing the current language, you will need to implement a language picker in your code. You can use the Transifex Native JS API to build that and add the related logic.

Languages API

Fetches list of project languages from CDS, useful for creating a language picker.

tx.getLanguages(): Promise([
  {
    name: String,
    code: String,
    localized_name: String,
    rtl: Boolean
  },
  ...
])

Example

import { tx } from '@transifex/native';
tx.getLanguages()
  .then(languages => {
    console.log(languages);
    // [{
    //   name: 'Greek',
    //   code: 'el',
    //   localized_name: 'Ελληνικά',
    //   rtl: false,
    // }, {
    //   ...
    // }]
  })
  .catch(console.log);

Get a list of available locales based on CDS.

tx.getLocales(): Promise(['code', 'code',...])

Language State API

Set current translation language

Fetches translations from the CDS and stores them in cache. When the promise returns, all content will be translated to that language.

tx.setCurrentLocale(localeCode): Promise

Example

tx.setCurrentLocale('el')
  .then(() => console.log('content loaded'))
  .catch(console.log);

Get current translation language

Returns the currently selected language code.

tx.getCurrentLocale(): String(localeCode)

Example

console.log(tx.getCurrentLocale());

Events API

You can use the events API to globally listen for various changes in the language state.

import { tx, onEvent, offEvent, sendEvent } from '@transifex/native';
import { LOCALE_CHANGED } from '@transifex/native';

// create an event handler
function handleLanguageChanged() {
  // Current language was changed
  console.log(tx.getCurrentLocale());
}

// register handler to a specific event
onEvent(LOCALE_CHANGED, handleLanguageChanged);

// remove handler from a specific event
offEvent(LOCALE_CHANGED, handleLanguageChanged);

// manually trigger a custom event with a payload
sendEvent("my_custom_event", { foo: "bar" });

Event types

EventDescriptionCallback
FETCHING_TRANSLATIONS library started fetching translations from CDSfunction(localeCode) { .. }
TRANSLATIONS_FETCHED translations were successfully fetched from CDSfunction(localeCode) { .. }
TRANSLATIONS_FETCH_FAILED an error occurred fetching translations from CDSfunction(localeCode) { .. }
LOCALE_CHANGED current language changedfunction(localeCode) { .. }
FETCHING_LOCALES library is fetching available locales from CDSfunction() { .. }
LOCALES_FETCHED available locales were successfully fetched from CDSfunction() { .. }
LOCALES_FETCH_FAILED an error occurred fetching locales from CDSfunction() { .. }