Android Open Source - K6nele Repeater Demo

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License

The source code is released under:

Apache License

Java Source Code

/*
 * Copyright 2011-2012, Institute of Cybernetics at Tallinn University of Technology
 */*www  .  j  a  va  2s . c  o 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.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ArrayAdapter;
import android.widget.ImageButton;
import android.widget.ListView;

import java.util.ArrayList;
import java.util.List;

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


/**
 * <p>This is a demo/testing activity which calls the RecognizerIntent.ACTION_RECOGNIZE_SPEECH.
 * If there are results then it adds them to the cumulative list of results
 * and immediately calls the recognizer intent again.</p>
 * 
 * <p>If the recognizer intent is set to start and stop automatically then one can have a completely
 * hands-free experience.</p>
 * 
 * <p>Using the menu, the user can declare that the input conforms to a grammar.</p>
 * 
 * @author Kaarel Kaljurand
 */
public class RepeaterDemo extends AbstractRecognizerDemoActivity implements OnClickListener {

  // We make it static so that it would survive Destroy.
  private static final List<String> mMatches = new ArrayList<String>();

  private final Intent mIntent = createRecognizerIntent();
  private ListView mList;
  private ImageButton speakButton;

  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.complex_demo);
    speakButton = (ImageButton) findViewById(R.id.buttonMicrophone);
    mList = (ListView) findViewById(R.id.list_matches);
    updateListView(mMatches);

    if (getRecognizers(mIntent).size() == 0) {
      speakButton.setEnabled(false);
      toast(getString(R.string.errorRecognizerNotPresent));
    } else {
      speakButton.setOnClickListener(this);
    }
  }


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


  @Override
  protected void onSuccess(Intent intent) {
        ArrayList<String> matches = intent.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS);
    if (! matches.isEmpty()) {
      mMatches.add(0, matches.get(0));
      updateListView(mMatches);

      // Here we could do something with the transcription, e.g. switch on lights,
      // skip to the next track, change the channel, etc.
      // Instead we just sleep for 0.8 sec.

      new Handler().postDelayed(new Runnable() {
        @Override
        public void run() {
          launchRecognizerIntent(mIntent);
        }
      }, 800);
    }
  }


  private static Intent createRecognizerIntent() {
    Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
    intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
    intent.putExtra(RecognizerIntent.EXTRA_MAX_RESULTS, 1);
    return intent;
  }


  private void updateListView(List<String> list) {
    mList.setAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, list));
  }
}

Java Source Code List

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