如何使用Android SpeechRecognizer作为服务？
如何使用Android SpeechRecognizer作为服务？
提问于 2013-08-07 21:03:31
我正在尝试将Android语音识别作为一项服务来运行。我可以验证是否调用了服务的onCreate()和onStart()方法，但是没有调用语音识别方法的回调，尽管我已经正确地设置了SpeechRecognizer对象。当语音识别在活动中完成而不是在服务中完成时，它似乎可以工作。我如何让它作为一种服务工作？这是一个明显的问题吗？
package net.viralpatel.android.speechtotextdemo;
import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import android.app.Service;
import android.content.Intent;
import android.os.Bundle;
import android.os.IBinder;
import android.speech.RecognitionListener;
import android.speech.RecognizerIntent;
import android.speech.SpeechRecognizer;
import android.util.Log;
import android.widget.Toast;
public class MyService extends Service implements RecognitionListener {
private SpeechRecognizer speechRecognizer;
@Override
public IBinder onBind(Intent arg0) {
return null;
}
@Override
public void onCreate() {
Toast.makeText(this, "My Service Created", Toast.LENGTH_LONG).show();
Log.d("tag", "onCreate");
speechRecognizer = SpeechRecognizer.createSpeechRecognizer(getApplicationContext());
speechRecognizer.setRecognitionListener(this);
Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL,
RecognizerIntent.LANGUAGE_MODEL_WEB_SEARCH);
speechRecognizer.startListening(intent);
}
@Override
public void onDestroy() {
Toast.makeText(this, "My Service Stopped", Toast.LENGTH_LONG).show();
Log.d("tag", "onDestroy");
}
@Override
public void onStart(Intent intent, int startid) {
Toast.makeText(this, "My Service Started", Toast.LENGTH_LONG).show();
Log.d("tag", "onStart");
}
@Override
public void onBeginningOfSpeech() {
Log.d("Speech", "onBeginningOfSpeech");
}
@Override
public void onBufferReceived(byte[] buffer) {
Log.d("Speech", "onBufferReceived");
}
@Override
public void onEndOfSpeech() {
Log.d("Speech", "onEndOfSpeech");
}
@Override
public void onError(int error) {
Log.d("Speech", "onError");
}
@Override
public void onEvent(int eventType, Bundle params) {
Log.d("Speech", "onEvent");
}
@Override
public void onPartialResults(Bundle partialResults) {
Log.d("Speech", "onPartialResults");
}
@Override
public void onReadyForSpeech(Bundle params) {
Log.d("Speech", "onReadyForSpeech");
}
@Override
public void onResults(Bundle results) {
Log.d("Speech", "onResults");
ArrayList strlist = results.getStringArrayList(SpeechRecognizer.RESULTS_RECOGNITION);
for (int i = 0; i < strlist.size();i++ ) {
Log.d("Speech", "result=" + strlist.get(i));
}
BufferedWriter out;
try {
out = new BufferedWriter(new FileWriter("mnt/sdcard/results.txt"));
// out.write(processor.execute(strlist.get(0).toString()));
out.write("hello world");
} catch (IOException e) {
Log.e("Speech",e.toString());
}
}
@Override
public void onRmsChanged(float rmsdB) {
Log.d("Speech", "onRmsChanged");
}
}回答 1
Stack Overflow用户
发布于 2018-08-24 20:28:34
您可以这样做：
public class OpenMicService extends Service implements RecognitionListener{
private static final int VOICE_RECOGNITION_REQUEST_CODE = 1234;
private SpeechRecognizer speechRecognizer;
@Nullable
@Override
public IBinder onBind(Intent intent) {
return null;
}
@Override
public int onStartCommand(Intent intent,int flags,int startId) {
Toast.makeText(this,"start Service.",Toast.LENGTH_SHORT).show();
speechRecognizer = SpeechRecognizer.createSpeechRecognizer(getApplicationContext());
speechRecognizer.setRecognitionListener(this);
Intent voice = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
voice.putExtra(RecognizerIntent.EXTRA_CALLING_PACKAGE, getClass()
.getPackage().getName());
voice.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL,
RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
voice.putExtra(RecognizerIntent.EXTRA_MAX_RESULTS, 10);
speechRecognizer.startListening(voice);
return START_REDELIVER_INTENT;
}
@Override
public void onDestroy() {
super.onDestroy();
}
@Override
public void onReadyForSpeech(Bundle bundle) {
}
@Override
public void onBeginningOfSpeech() {
}
@Override
public void onRmsChanged(float v) {
}
@Override
public void onBufferReceived(byte[] bytes) {
}
@Override
public void onEndOfSpeech() {
}
@Override
public void onError(int i) {
}
@Override
public void onResults(Bundle results) {
String wordStr = null;
String[] words = null;
String firstWord = null;
String secondWord = null;
ArrayList<String> matches = results
.getStringArrayList(speechRecognizer.RESULTS_RECOGNITION);
wordStr = matches.get(0);
words = wordStr.split(" ");
firstWord = words[0];
secondWord = words[1];
if (firstWord.equals("open")) {
PackageManager packageManager = getPackageManager();
List<PackageInfo> packs = packageManager
.getInstalledPackages(0);
int size = packs.size();
boolean uninstallApp = false;
boolean exceptFlg = false;
for (int v = 0; v < size; v++) {
PackageInfo p = packs.get(v);
String tmpAppName = p.applicationInfo.loadLabel(
packageManager).toString();
String pname = p.packageName;
//URL urlAddress = urlAddress.toLowerCase();
tmpAppName = tmpAppName.toLowerCase();
if (tmpAppName.trim().toLowerCase().equals(secondWord.trim().toLowerCase())) {
PackageManager pm = this.getPackageManager();
Intent appStartIntent = pm.getLaunchIntentForPackage(pname);
if (null != appStartIntent) {
try {
this.startActivity(appStartIntent);
} catch (Exception e) {
}
}
}
}
} // end of open app code
}
@Override
public void onPartialResults(Bundle bundle) {
}
@Override
public void onEvent(int i,Bundle bundle) {
}
}页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/18104132
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