En el siguiente ejemplo veremos que está configurado para web y que el número máximo de elementos que se van a mostrar en la lista son 10. Esta configuración se puede hacer dinámica: en la búsqueda por web o aplicaciones se puede realizar mediante la inserción de un RadioButton en el código. En el segundo caso podemos poner un contador, un spinner con el número de búsquedas limitadas...
A continuación les dejo el código:
AndroidManifest.xml
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.blogvoicerecognition"
    android:versionCode="1"
    android:versionName="1.0" >
    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="15" />
    <uses-permission android:name="android.permission.INTERNET" />
    <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".VoiceRecognitionActivity"
            android:label="@string/title_activity_voice_recognition" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>
</manifest>
activity_voice_recognition.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >
    <EditText
        android:id="@+id/etTextHint"
        android:gravity="top"
        android:inputType="textMultiLine"
        android:lines="1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Speech hint here"/>
    <Button
        android:id="@+id/btSpeak"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:onClick="speak"
        android:padding="@dimen/padding_medium"
        android:text="Speak"
        tools:context=".VoiceRecognitionActivity" />
    <ListView
        android:id="@+id/lvTextMatches"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />
</LinearLayout>
VoiceRecognitionActivity.java
package com.example.blogvoicerecognition;
import java.util.ArrayList;
import java.util.List;
import android.app.Activity;
import android.app.SearchManager;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.os.Bundle;
import android.speech.RecognizerIntent;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.Toast;
public class VoiceRecognitionActivity extends Activity {
 private static final int VOICE_RECOGNITION_REQUEST_CODE = 0;
 private static final int MATCHES = 10;
 private EditText mEditText;
 private ListView mListViewResults;
 private Button mButtonSpeak;
 @Override
 public void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_voice_recognition);
  mEditText = (EditText) findViewById(R.id.etTextHint);
  mListViewResults = (ListView) findViewById(R.id.lvTextMatches);
  mButtonSpeak = (Button) findViewById(R.id.btSpeak);
  voiceRecognition();
 }
 public void voiceRecognition() {
  // Check if voice recognition is present
  PackageManager pm = getPackageManager();
  List<ResolveInfo> activities = pm.queryIntentActivities(new Intent(
    RecognizerIntent.ACTION_RECOGNIZE_SPEECH), 0);
  if (activities.size() == 0) {
   mButtonSpeak.setEnabled(false);
   mButtonSpeak.setText("Voice recognizer not present");
   Toast.makeText(this, "Voice recognizer not present",
     Toast.LENGTH_SHORT).show();
  }
 }
 public void speak(View view) {
  Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
  // Specify the calling package to identify your application
  intent.putExtra(RecognizerIntent.EXTRA_CALLING_PACKAGE, getClass()
    .getPackage().getName());
  // Display an hint to the user about what he should say.
  intent.putExtra(RecognizerIntent.EXTRA_PROMPT, mEditText.getText()
    .toString());
  // Given an hint to the recognizer about what the user is going to say
  // There are two form of language model available
  // 1.LANGUAGE_MODEL_WEB_SEARCH : For short phrases
  // 2.LANGUAGE_MODEL_FREE_FORM : If not sure about the words or phrases
  // and its domain.
  intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL,
    RecognizerIntent.LANGUAGE_MODEL_WEB_SEARCH);
  // Specify how many results you want to receive. The results will be
  // sorted where the first result is the one with higher confidence.
  intent.putExtra(RecognizerIntent.EXTRA_MAX_RESULTS, MATCHES);
  // Start the Voice recognizer activity for the result.
  startActivityForResult(intent, VOICE_RECOGNITION_REQUEST_CODE);
 }
 @Override
 protected void onActivityResult(int requestCode, int resultCode, Intent data) {
  if (requestCode == VOICE_RECOGNITION_REQUEST_CODE)
   // If Voice recognition is successful then it returns RESULT_OK
   if (resultCode == RESULT_OK) {
    ArrayList<String> textMatchList = data
      .getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS);
    if (!textMatchList.isEmpty()) {
     // If first Match contains the 'search' word
     // Then start web search.
     if (textMatchList.get(0).contains("search")) {
      String searchQuery = textMatchList.get(0);
      searchQuery = searchQuery.replace("search", "");
      Intent search = new Intent(Intent.ACTION_WEB_SEARCH);
      search.putExtra(SearchManager.QUERY, searchQuery);
      startActivity(search);
     } else {
      // populate the Matches
      mListViewResults.setAdapter(new ArrayAdapter<String>(
        this, android.R.layout.simple_list_item_1,
        textMatchList));
     }
    }
    // Result code for various error.
   } else if (resultCode == RecognizerIntent.RESULT_AUDIO_ERROR) {
    showToastMessage("Audio Error");
   } else if (resultCode == RecognizerIntent.RESULT_CLIENT_ERROR) {
    showToastMessage("Client Error");
   } else if (resultCode == RecognizerIntent.RESULT_NETWORK_ERROR) {
    showToastMessage("Network Error");
   } else if (resultCode == RecognizerIntent.RESULT_NO_MATCH) {
    showToastMessage("No Match");
   } else if (resultCode == RecognizerIntent.RESULT_SERVER_ERROR) {
    showToastMessage("Server Error");
   }
  super.onActivityResult(requestCode, resultCode, data);
 }
 /**
  * Helper method to show the toast message
  **/
 void showToastMessage(String message) {
  Toast.makeText(this, message, Toast.LENGTH_SHORT).show();
 }
}
A continuación les dejo la imagen de la búsqueda de la palabra "Android":
It works!
Roger Sala,

 



