com.manueldeveloper.SpeechRecognizer.java Source code

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Here is the source code for com.manueldeveloper.SpeechRecognizer.java

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/*
  Licensed to the Apache Software Foundation (ASF) under one
  or more contributor license agreements.  See the NOTICE file
  distributed with this work for additional information
  regarding copyright ownership.  The ASF licenses this file
  to you under the Apache License, Version 2.0 (the
  "License"); you may not use this file except in compliance
  with the License.  You may obtain a copy of the License at
    
   http://www.apache.org/licenses/LICENSE-2.0
    
  Unless required by applicable law or agreed to in writing,
  software distributed under the License is distributed on an
  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  KIND, either express or implied.  See the License for the
  specific language governing permissions and limitations
  under the License.
*/

package com.manueldeveloper;

import java.util.ArrayList;

import org.apache.cordova.CallbackContext;
import org.apache.cordova.CordovaPlugin;
import org.apache.cordova.PluginResult;
import org.json.JSONArray;
import org.json.JSONException;

import android.app.Activity;
import android.content.Intent;
import android.speech.RecognizerIntent;

public class SpeechRecognizer extends CordovaPlugin {

    //private static final String SpeechRecognizer_LOG= "SpeechRecognizer";
    private CallbackContext speechRecognizerCallbackContext;

    private static final int REQUEST_CODE = 1;

    private Intent recognizerIntent;
    private ArrayList<String> results;
    private String promptMessage;
    private int maxResults;

    public SpeechRecognizer() {
        speechRecognizerCallbackContext = null;
        promptMessage = null;
        maxResults = 1;
    }

    public boolean execute(String action, JSONArray args, CallbackContext callbackContext) throws JSONException {
        // Check action
        if (action.equals("recognize")) {
            // Get the reference to the callbacks and parameters
            this.speechRecognizerCallbackContext = callbackContext;
            if (args.length() > 0) {
                if (args.getInt(0) >= 1)
                    maxResults = args.getInt(0);
                else {
                    callbackContext.error("maxResults argument must to be equal or more than 1");
                    return true;
                }
            }
            if (args.length() > 1)
                promptMessage = args.getString(1);

            // Start the recognition process
            recognizerIntent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
            recognizerIntent.putExtra(RecognizerIntent.EXTRA_MAX_RESULTS, maxResults);
            if (promptMessage != null)
                recognizerIntent.putExtra(RecognizerIntent.EXTRA_PROMPT, promptMessage);
            cordova.startActivityForResult(this, recognizerIntent, REQUEST_CODE);

            return true;
        }

        return false;
    }

    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);

        // Check the request code
        if (requestCode == REQUEST_CODE) {
            // Check the result code
            if (resultCode == Activity.RESULT_OK) {
                // Get the results
                this.results = data.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS);
                sendResults();
            } else {
                if (this.speechRecognizerCallbackContext != null) {
                    switch (resultCode) {
                    case RecognizerIntent.RESULT_NETWORK_ERROR:
                        this.speechRecognizerCallbackContext.error("NETWORK_ERROR");
                        break;
                    case RecognizerIntent.RESULT_CLIENT_ERROR:
                        this.speechRecognizerCallbackContext.error("CLIENT_ERROR");
                        break;
                    case RecognizerIntent.RESULT_SERVER_ERROR:
                        this.speechRecognizerCallbackContext.error("SERVER_ERROR");
                        break;
                    case RecognizerIntent.RESULT_AUDIO_ERROR:
                        this.speechRecognizerCallbackContext.error("AUDIO_ERROR");
                        break;
                    case RecognizerIntent.RESULT_NO_MATCH:
                        this.speechRecognizerCallbackContext.error("NO_MATCH");
                        break;
                    }
                }
            }
        }
    }

    private void sendResults() {
        if (this.speechRecognizerCallbackContext != null) {
            PluginResult result = new PluginResult(PluginResult.Status.OK, new JSONArray(this.results));
            result.setKeepCallback(false);
            this.speechRecognizerCallbackContext.sendPluginResult(result);
        }
    }
}