React Native

Google Translate Text

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Demonstrates how to use the Cloud Translation API to translate text from one spoken language to another. The example translates from English to Spanish. React Native

import { Http, HttpResponse, JsonObject } from '@chilkat/react-native'

async function chilkatExample() {
  // This example assumes the Chilkat API to have been previously unlocked.
  // See Global Unlock Sample for sample code.

  // --------------------------------------------------------------------------------
  // IMPORTANT: 
  // Don't forget you need to 1st enable the Cloud Translation API in your Google Developers Console at https://console.cloud.google.com
  // --------------------------------------------------------------------------------

  // It is assumed we previously obtained an OAuth2 access token.
  // This example loads the JSON access token file 
  const jsonToken = new JsonObject();
  try {
    jsonToken.loadFile('qa_data/tokens/_googleTranslate.json');
  } catch {
    console.log('Failed to load _googleTranslate.json');
    return;
  }

  const http = new Http();

  http.authToken = jsonToken.stringOf('access_token');

  // The following JSON is sent in the request body.

  // {
  //     "q": "The quick brown fox jumped over the lazy dog.",
  //     "source": "en",
  //     "target": "es",
  //     "format": "text"
  // }

  const json = new JsonObject();
  // The following code creates the JSON request body.
  json.updateString('q', 'The quick brown fox jumped over the lazy dog.');
  json.updateString('source', 'en');
  json.updateString('target', 'es');
  json.updateString('format', 'text');

  json.emitCompact = false;
  console.log(json.emit());

  const resp = new HttpResponse();
  try {
    await http.httpJsonAsync('POST', 'https://translation.googleapis.com/language/translate/v2', json, 'application/json', resp);
  } catch {
    console.log(http.lastErrorText);
    return;
  }

  const jResp = new JsonObject();
  resp.getBodyJson(jResp);
  jResp.emitCompact = false;

  console.log('Response Body:');
  console.log(jResp.emit());

  const respStatusCode = resp.statusCode;
  console.log(`Response Status Code = ${respStatusCode}`);
  if (respStatusCode >= 400) {
    console.log('Response Header:');
    console.log(resp.header);
    console.log('Failed.');
    return;
  }

  // Sample JSON response:
  // (Sample code for parsing the JSON response is shown below)

  // {
  //   "data": {
  //     "translations": [
  //       {
  //         "translatedText": "El zorro r�pida salt� sobre el perro perezoso."
  //       }
  //     ]
  //   }
  // }

  let translatedText = '';

  let i = 0;
  const n = jResp.sizeOfArray('data.translations');
  while (i < n) {
    jResp.i = i;
    translatedText = jResp.stringOf('data.translations[i].translatedText');
    console.log(translatedText);
    i++;
  }
}