Android Open Source - K6nele Voice Search Demo

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License

The source code is released under:
Apache License
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Java Source Code

/*
 * Copyright 2011, Institute of Cybernetics at Tallinn University of Technology
 *//from   w  ww . ja  v  a  2 s  . co m
 * Licensed 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 ee.ioc.phon.android.speak.demo;

import android.app.PendingIntent;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ImageButton;

import ee.ioc.phon.android.speak.R;
import ee.ioc.phon.android.speak.RecognizerIntent;


/**
 * <p>Simple button that lets you start speech recording/recognizing.
 * After it is finished you are taken immediately to the search results
 * that match the recognized words.</p>
 * 
 * @author Kaarel Kaljurand
 */
public class VoiceSearchDemo extends AbstractRecognizerDemoActivity implements OnClickListener {

  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.voice_search_demo);
    ImageButton speakButton = (ImageButton) findViewById(R.id.buttonMicrophone);
    speakButton.setOnClickListener(this);
  }


  public void onClick(View v) {
    if (v.getId() == R.id.buttonMicrophone) {
      launchRecognizerIntent(createVoiceAppSearchIntent());
    }
  }


  @Override
  protected void onSuccess(Intent intent) {
    finish();
  }


  /**
   * <p>Create and return an Intent that can launch the voice search activity, perform a specific
   * voice transcription, and forward the results to the searchable activity.</p>
   *
   * @return A completely-configured intent ready to send to the voice search activity
   */
  private Intent createVoiceAppSearchIntent() {
    // Create the necessary intent to set up a search-and-forward operation
    // in the voice search system. We have to keep the bundle separate,
    // because it becomes immutable once it enters the PendingIntent.
    Intent queryIntent = new Intent(Intent.ACTION_SEARCH);
    PendingIntent pending = PendingIntent.getActivity(this, 0, queryIntent, PendingIntent.FLAG_ONE_SHOT);

    // Now set up the bundle that will be inserted into the pending intent
    // when it is time to do the search. We always build it here (even if empty)
    // because the voice search activity will always need to insert "QUERY" into
    // it anyway.
    Bundle queryExtras = new Bundle();

    Intent voiceIntent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
    voiceIntent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
    //voiceIntent.putExtra(RecognizerIntent.EXTRA_LANGUAGE, (String) null);
    voiceIntent.putExtra(RecognizerIntent.EXTRA_MAX_RESULTS, 1);
    // Add the values that configure forwarding the results
    voiceIntent.putExtra(RecognizerIntent.EXTRA_RESULTS_PENDINGINTENT, pending);
    voiceIntent.putExtra(RecognizerIntent.EXTRA_RESULTS_PENDINGINTENT_BUNDLE, queryExtras);

    return voiceIntent;
  }
}
Java Source Code List
