Speech Recognition using Appcelerator Titanium and Hyperloop

index.js

'use strict';

/**
 * Android sample showing speech recognition using Hyperloop.
 *
 * @version Titanium 6.1.2.GA
 * @version Alloy 1.9.13
 * @version Hyperloop 2.1.3
 */

var SpeechRecognizer = require('android.speech.SpeechRecognizer');
var RecognitionListener = require('android.speech.RecognitionListener');
var Intent = require('android.content.Intent');
var RecognizerIntent = require('android.speech.RecognizerIntent');
var Activity = require('android.app.Activity');
var ArrayList = require('java.util.ArrayList');

var ctx = Ti.Android.currentActivity;

/**
 * Check if speech recognition is available.
 * Main "Google" app required for speech recognition.
 * @link https://play.google.com/store/apps/details?id=com.google.android.googlequicksearchbox
 */
if(!SpeechRecognizer.isRecognitionAvailable(ctx)) {
	alert('Speech Recognition not available.')
}

var instance = SpeechRecognizer.createSpeechRecognizer(ctx);

// Set event callbacks.
instance.setRecognitionListener(new RecognitionListener({
	onReadyForSpeech: function(e) {
        console.log('onReadyForSpeech');
        Ti.API.info(e);
    },
	onBeginningOfSpeech: function() {
		console.log('onBeginningOfSpeech');
	},
	onEndOfSpeech: function() {
		console.log('onEndOfSpeech');
	},
    /**
     * @param bundle Contains an array of matched words. First word is usually the intended one.
     */
	onResults: function(bundle) {
        console.log('onResults');
        // Cast to array since the parameter is not useable in its current form (probably a neater way to do this?)
        var array = new ArrayList(bundle.getStringArrayList(SpeechRecognizer.RESULTS_RECOGNITION)).toArray();

        // Assume the first word is a color and lowercase it.
        var word = array[0].toLowerCase();
		// Set color on main window.
		$.mainWindow.backgroundColor = word;
		// Set word on main button to show the word that was recognized.
		$.mainButton.title = word;
	},
	onError: function(e) {
        console.log('onError');
        Ti.API.info(e);
	},
	onEvent: function(e) {
		console.log('onEvent');
        Ti.API.info(e);
	},
	onPartialResults: function(e) {
		console.log('onPartialResults');
        Ti.API.info(e);
	}
}));

var intent;

/**
 * Click listener attached to a button on the screen. Creates an intent and starts listening for speech. The listener
 * automatically stops when speech is no longer recognized.
 */
$.mainButton.addEventListener('click', function() {
	intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
	intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
	intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE, 'en_US');
	intent.putExtra(RecognizerIntent.EXTRA_PROMPT, 'Please speak now...');
	// Assign Calling Package as current package name (not sure if required).
	intent.putExtra(RecognizerIntent.EXTRA_CALLING_PACKAGE, 'com.speechtest');
    instance.startListening(intent);
});

// Open #mainWindow.
$.mainWindow.open();