问题
I'm trying to create a continous speech recognition in Android 4.4, simple displaying the spoken words in a TextView, like a dictate. I followed multiple tutorials, like https://github.com/fcrisciani/android-speech-recognition/blob/master/VoiceRecognition/src/com/speech/fcrisciani/voicerecognition/ContinuousDictationFragment.java, or Is there a way to use the SpeechRecognizer API directly for speech input? and implemented the following version:
import java.util.ArrayList;
import android.app.Activity;
import android.content.Intent;
import android.graphics.PorterDuff;
import android.os.Bundle;
import android.speech.RecognitionListener;
import android.speech.RecognizerIntent;
import android.speech.SpeechRecognizer;
import android.view.KeyEvent;
import android.view.View;
import android.widget.ImageButton;
import android.widget.TextView;
public class VoiceReadActivity extends Activity {
private ImageButton mButtonSpeech;
private TextView mTextView;
private SpeechRecognizer mSpeechRecognizer = null;
private SpeechRecognizer getSpeechRecognizer() {
if (mSpeechRecognizer == null) {
mSpeechRecognizer = SpeechRecognizer.createSpeechRecognizer(this);
mSpeechRecognizer.setRecognitionListener(new RecognitionListener() {
@Override
public void onReadyForSpeech(Bundle params) {
mButtonSpeech.getBackground().setColorFilter( 0xFFFF0000, PorterDuff.Mode.MULTIPLY );
}
@Override
public void onBeginningOfSpeech() {
mTextView.append( "BEGINNING TO HEAR..." );
mButtonSpeech.getBackground().setColorFilter( 0xFFFFFFFF, PorterDuff.Mode.MULTIPLY );
}
@Override
public void onBufferReceived(byte[] buffer) {}
@Override
public void onEndOfSpeech() {
mTextView.append( "STOP HEARING..." );
mButtonSpeech.getBackground().setColorFilter( 0xFF00FFFF, PorterDuff.Mode.DST );
}
@Override
public void onError(int error) {
String message;
boolean restart = true;
switch (error)
{
case SpeechRecognizer.ERROR_AUDIO:
message = "Audio recording error";
break;
case SpeechRecognizer.ERROR_CLIENT:
message = "Client side error";
restart = false;
break;
case SpeechRecognizer.ERROR_INSUFFICIENT_PERMISSIONS:
message = "Insufficient permissions";
restart = false;
break;
case SpeechRecognizer.ERROR_NETWORK:
message = "Network error";
break;
case SpeechRecognizer.ERROR_NETWORK_TIMEOUT:
message = "Network timeout";
break;
case SpeechRecognizer.ERROR_NO_MATCH:
message = "No match";
break;
case SpeechRecognizer.ERROR_RECOGNIZER_BUSY:
message = "RecognitionService busy";
break;
case SpeechRecognizer.ERROR_SERVER:
message = "error from server";
break;
case SpeechRecognizer.ERROR_SPEECH_TIMEOUT:
message = "No speech input";
break;
default:
message = "Not recognised";
break;
}
mTextView.append("onError code:" + error + " message: " + mes sage);
if (restart) {
getSpeechRecognizer().cancel();
startVoiceRead();
}
}
@Override
public void onEvent(int eventType, Bundle params) {}
@Override
public void onPartialResults(Bundle partialResults) {}
@Override
public void onResults(Bundle results) {
ArrayList<String> text = results.getStringArrayList(SpeechRecognizer.RESULTS_RECOGNITION);
mTextView.append(text.get(0));
mTextView.append( ". " );
startVoiceRead();
}
@Override
public void onRmsChanged(float rmsdB) {}
});
}
return mSpeechRecognizer;
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mButtonSpeech = (ImageButton)findViewById(R.id.button_speech);
mTextView = (TextView)findViewById(R.id.text_slave);
mButtonSpeech.setOnClickListener( new View.OnClickListener() {
@Override
public void onClick(View v) {
if (mSpeechRecognizer == null) {
startVoiceRead();
} else {
stopVoiceRead();
}
}
});
}
public void startVoiceRead() {
Intent speechIntent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
speechIntent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
getSpeechRecognizer().startListening(speechIntent);
mButtonSpeech.getBackground().setColorFilter( 0xFFFFFF00, PorterDuff.Mode.MULTIPLY );
}
public void stopVoiceRead() {
if (mSpeechRecognizer != null) {
mSpeechRecognizer.destroy();
mSpeechRecognizer = null;
}
mButtonSpeech.getBackground().setColorFilter( 0xFFFFFFFF, PorterDuff.Mode.DST);
}
}
I already added permissions to my Android Manifest:
<uses-permission android:name="android.permission.RECORD_AUDIO"/>
<uses-permission android:name="android.permission.INTERNET"/>
The problem is, that the RecognitionListener functions like onBeginningOfSpeech() is called randomly in average every third time I want to activate it threw button presses. Furthermore I don't receive any results, but ErrorCode 2: Network Error, if the RecognitionListener is activated. Even though I followed the tutorials, I wasn't able to spot the difference, making my code not work until now. My LogCat output throws the following errors when pressing the button:
07-04 10:20:22.714: E/DatabaseUtils(869): Writing exception to parcel
07-04 10:20:22.714: E/DatabaseUtils(869): java.lang.SecurityException: Permission Denial: get/set setting for user asks to run as user -2 but is calling from user 0; this requires android.permission.INTERACT_ACROSS_USERS_FULL
07-04 10:20:22.714: E/DatabaseUtils(869): at com.android.server.am.ActivityManagerService.handleIncomingUser(ActivityManagerService.java:14614)
07-04 10:20:22.714: E/DatabaseUtils(869): at android.app.ActivityManager.handleIncomingUser(ActivityManager.java:2258)
07-04 10:20:22.714: E/DatabaseUtils(869): at com.android.providers.settings.SettingsProvider.call(SettingsProvider.java:663)
07-04 10:20:22.714: E/DatabaseUtils(869): at android.content.ContentProvider$Transport.call(ContentProvider.java:325)
07-04 10:20:22.714: E/DatabaseUtils(869): at android.content.ContentProviderNative.onTransact(ContentProviderNative.java:275)
07-04 10:20:22.714: E/DatabaseUtils(869): at android.os.Binder.execTransact(Binder.java:404)
07-04 10:20:22.714: E/DatabaseUtils(869): at dalvik.system.NativeStart.run(Native Method)
07-04 10:20:22.714: W/ActivityManager(869): Permission Denial: get/set setting for user asks to run as user -2 but is calling from user 0; this requires android.permission.INTERACT_ACROSS_USERS_FULL
07-04 10:20:22.734: E/VoiceEngineWrapper(16366): getInstance() : get existed VoiceEngine
07-04 10:20:22.734: E/VSG(16366): VSG: speechEndpointTimeout = 1500
07-04 10:20:22.734: E/VSG(16366): VSG: DEFAULT_ENDPOINT_MEDIUM is 1750
07-04 10:20:22.734: E/VSG(16366): VSG: Not using dynamic HANGOVER ... speechEndpointTimeout is 1500
07-04 10:20:22.734: E/VSG(16366): VSG: SHORT = 400
07-04 10:20:22.734: E/VSG(16366): VSG: MEDIUM = 750
07-04 10:20:22.734: E/VSG(16366): VSG: MEDIUM_LONG = 1250
07-04 10:20:22.734: E/VSG(16366): VSG: LONG = 1750
07-04 10:20:22.734: E/VSG(16366): VSG: LONG_LONG = 2250
But even if I add
<uses-permission android:name="android.permission.INTERACT_ACROSS_USERS_FULL"/>
the problems, described above, continue.
Thanks for taking the time to help. This has been a hurdle I haven't been able to get over yet.
回答1:
According to Use of SpeechRecognizer produces ERROR_NETWORK (Value 2), the error was caused by Samsungs speech API (powered by Vlingo). Changing the speech API in the phone settings to standard Google API solved the problems.
回答2:
For others that may have this issue, I encountered NetworkError with a SpeechRecognizer due to having an overlapping MediaRecorder or AudioRecord instance active at the same time. It seemed to work fine on a Lenovo Tab 2 A10 that I was developing on, but not on any of the mobile devices I tested.
Searching for SpeechRecognizer and NetworkError was not productive.
If you have this issue, you might find this question useful (or start searching for SpeechRecognizer and AudioRecord/MediaRecorder)...
Android speech recognizing and audio recording in the same time
来源：https://stackoverflow.com/questions/24570261/android-speechrecognizer-network-error