//
//src\com\example\android\voicerecognitionservice\VoiceRecognitionService.java
/*
* Copyright (C) 2010 The Android Open Source Project
*
* 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 com.example.android.voicerecognitionservice;
import java.util.ArrayList;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.os.RemoteException;
import android.speech.SpeechRecognizer;
import android.speech.RecognitionService;
/**
* A sample implementation of a {@link RecognitionService}. This very simple implementation does
* no actual voice recognition. It just immediately returns fake recognition results.
* Depending on the setting chosen in {@link VoiceRecognitionSettings}, it either returns a
* list of letters ("a", "b", "c"), or a list of numbers ("1", "2", "3").
*/
public class VoiceRecognitionService extends RecognitionService {
@Override
protected void onCancel(Callback listener) {
// A real recognizer would do something to shut down recognition here.
}
@Override
protected void onStartListening(Intent recognizerIntent, Callback listener) {
// A real recognizer would probably utilize a lot of the other listener callback
// methods. But we'll just skip all that and pretend we've got a result.
ArrayList results = new ArrayList();
SharedPreferences prefs = getSharedPreferences(
VoiceRecognitionSettings.SHARED_PREFERENCES_NAME,
Context.MODE_PRIVATE);
String resultType = prefs.getString(
VoiceRecognitionSettings.PREF_KEY_RESULTS_TYPE,
String.valueOf(VoiceRecognitionSettings.RESULT_TYPE_LETTERS));
int resultTypeInt = Integer.parseInt(resultType);
if (resultTypeInt == VoiceRecognitionSettings.RESULT_TYPE_LETTERS) {
results.add("a");
results.add("b");
results.add("c");
} else if (resultTypeInt == VoiceRecognitionSettings.RESULT_TYPE_NUMBERS) {
results.add("1");
results.add("2");
results.add("3");
}
Bundle bundle = new Bundle();
bundle.putStringArrayList(SpeechRecognizer.RESULTS_RECOGNITION, results);
try {
listener.results(bundle);
} catch (RemoteException e) {
throw new RuntimeException(e);
}
}
@Override
protected void onStopListening(Callback listener) {
// Not implemented - in this sample we assume recognition would be endpointed
// automatically, though certain applications may wish to expose an affordance
// for stopping recording manually.
}
}
//src\com\example\android\voicerecognitionservice\VoiceRecognitionSettings.java
/*
* Copyright (C) 2010 The Android Open Source Project
*
* 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 com.example.android.voicerecognitionservice;
import android.os.Bundle;
import android.preference.PreferenceActivity;
/**
* A settings activity for the sample voice recognizer.
*/
public class VoiceRecognitionSettings extends PreferenceActivity {
// The name of the SharedPreferences file we'll store preferences in.
public static final String SHARED_PREFERENCES_NAME = "VoiceRecognitionService";
// The key to the preference for the type of results to show (letters or numbers).
// Identical to the value specified in res/values/strings.xml.
public static final String PREF_KEY_RESULTS_TYPE = "results_type";
// The values of the preferences for the type of results to show (letters or numbers).
// Identical to the values specified in res/values/strings.xml.
public static final int RESULT_TYPE_LETTERS = 0;
public static final int RESULT_TYPE_NUMBERS = 1;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
getPreferenceManager().setSharedPreferencesName(SHARED_PREFERENCES_NAME);
addPreferencesFromResource(R.xml.preferences);
}
}
//
//res\values\strings.xml
Sample Recognizer
Voice Recognition Settings
Results type
- Letters
- Numbers
- 0
- 1
0
//
//res\xml\preferences.xml
android:title="@string/results_type_title"
android:entries="@array/results_type_entries"
android:entryValues="@array/results_type_values"
android:dialogTitle="@string/results_type_title"
android:defaultValue="@string/results_type_default_value"
/>
//res\xml\recognizer.xml
/>