处理PocketSphinx Android应用程序中的错误 [英] Handling Errors in PocketSphinx Android app
问题描述
我正在使用pocketphinx演示程序附带的默认字典，这对我的目的很有用。当用户输入短语时，该应用程序将启动一个关键字监听，但是如果字典中没有找到该字词，则该应用程序将崩溃。应用程序在服务中崩溃onError（）。如何处理错误？有什么办法可以抓住错误吗？总的来说，我希望服务在发生错误时调用stopSelf（），因此主要活动也不会崩溃。
I am using the default dictionary that comes with the pocketsphinx demo which is good for my purposes. When a user enters a phrase, the app starts a keyphrase listening but if the word is not found in the dictionary the app crashes. The app crashes onError() within a service. How is the error handling done? is there any way I can catch the error? Overall I would just like the service to call stopSelf() when an error happens so the main activity won't crash as well.
错误：
错误：kws_search.c，第165行：字典中缺少phonez字样
ERROR: "kws_search.c", line 165: The word 'phonez' is missing in the dictionary
致命信号11（SIGSEGV）在0x00000000（code = 1），线程5389（1994.wherephone）
Fatal signal 11 (SIGSEGV) at 0x00000000 (code=1), thread 5389 (1994.wherephone)
这是我的服务类：
public class WherePhoneService extends Service implements RecognitionListener {
private static String SettingStorage = "SavedData";
SharedPreferences settingData;
private SpeechRecognizer recognizer;
private String sInput;
private String sOutput;
private int seekVal;
private TextToSpeech reply;
private AsyncTask t;
public WherePhoneService() {
}
@Override
public IBinder onBind(Intent intent) {
// TODO: Return the communication channel to the service.
throw new UnsupportedOperationException("Not yet implemented");
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
makeText(getApplicationContext(), "onHandle start", Toast.LENGTH_SHORT).show();
getValues();
startTTS();
t = new AsyncTask<Void, Void, Exception>() {
@Override
protected Exception doInBackground(Void... params) {
try {
Assets assets = new Assets(WherePhoneService.this);
File assetDir = assets.syncAssets();
setupRecognizer(assetDir);
} catch (IOException e) {
return e;
}
return null;
}
@Override
protected void onPostExecute(Exception result) {
if (result != null) {
//((TextView) findViewById(R.id.caption_text)).setText("Failed to init recognizer " + result);
} else {
switchSearch(sInput);
}
}
}.execute();
return Service.START_STICKY;
}
private void setupRecognizer(File assetsDir) throws IOException {
recognizer = defaultSetup()
.setAcousticModel(new File(assetsDir, "en-us-ptm"))
.setDictionary(new File(assetsDir, "cmudict-en-us.dict"))
// To disable logging of raw audio comment out this call (takes a lot of space on the device)
//.setRawLogDir(assetsDir)
// Threshold to tune for keyphrase to balance between false alarms and misses
.setKeywordThreshold(1e-45f)
// Use context-independent phonetic search, context-dependent is too slow for mobile
.setBoolean("-allphone_ci", true)
.getRecognizer();
recognizer.addListener(this);
// Create keyword-activation search.
recognizer.addKeyphraseSearch(sInput, sInput);
}
private void switchSearch(String searchName) {
recognizer.stop();
// If we are not spotting, start listening with timeout (10000 ms or 10 seconds).
if (searchName.equals(sInput))
recognizer.startListening(searchName);
else
recognizer.startListening(searchName, 10000);
}
@Override
public void onBeginningOfSpeech() {
}
@Override
public void onEndOfSpeech() {
if (!recognizer.getSearchName().equals(sInput))
switchSearch(sInput);
}
@Override
public void onPartialResult(Hypothesis hypothesis) {
if (hypothesis == null)
return;
String text = hypothesis.getHypstr();
makeText(getApplicationContext(), "Partial", Toast.LENGTH_SHORT).show();
if (text.equals(sInput)) {
setVolume();
// Text to speech
reply.speak(sOutput, TextToSpeech.QUEUE_ADD, null);
switchSearch(sInput);
}
else {
makeText(getApplicationContext(), "Try again", Toast.LENGTH_SHORT).show();
switchSearch(sInput);
}
}
@Override
public void onResult(Hypothesis hypothesis) {
if (hypothesis != null) {
// restart listener and affirm that partial has past
makeText(getApplicationContext(), "end", Toast.LENGTH_SHORT).show();
//recognizer.startListening(sInput);
switchSearch(sInput);
}
}
public void onError(Exception e) {
e.printStackTrace(); // not all Android versions will print the stack trace automatically
Intent intent = new Intent ();
intent.setAction ("com.mydomain.SEND_LOG"); // see step 5.
intent.setFlags (Intent.FLAG_ACTIVITY_NEW_TASK); // required when starting from Application
startActivity (intent);
stopSelf();
}
@Override
public void onTimeout() {
switchSearch(sInput);
}
public void startTTS() {
reply = new TextToSpeech(getApplicationContext(), new TextToSpeech.OnInitListener() {
@Override
public void onInit(int status) {
if(status != TextToSpeech.ERROR){
reply.setLanguage(Locale.UK);
}
}
});
}
public void getValues() {
settingData = getBaseContext().getSharedPreferences(SettingStorage, 0);
sInput = settingData.getString("inputstring", "Where is my phone").toString().toLowerCase().replaceAll("[^\\w\\s]", "");
sOutput = settingData.getString("outputstring", "").toString().toLowerCase();
seekVal = settingData.getInt("seekval", 0);
}
public void setVolume() {
int seekValConvert = 0;
AudioManager audioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
int getMaxPhoneVol = audioManager.getStreamMaxVolume(audioManager.STREAM_MUSIC);
seekValConvert = ((seekVal * getMaxPhoneVol)/100);
audioManager.setStreamVolume(audioManager.STREAM_MUSIC, seekValConvert, 0);
}
@Override
public void onDestroy() {
super.onDestroy();
makeText(getApplicationContext(), "destroy", Toast.LENGTH_SHORT).show();
recognizer.cancel();
recognizer.shutdown();
t.cancel(true);
}
}
推荐答案
崩溃是pocketphinx-android中的一个错误。如果您从 github 更新到最新版本，则应正确地将RuntimeException抛出方法中的任何错误 addKeyphrase 和 setSearch。
Crash is a bug in pocketsphinx-android. If you update to latest version from github, it should properly throw RuntimeException on any errors in methods addKeyphrase and setSearch.
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