logcat的
E/AndroidRuntime: FATAL EXCEPTION: main
java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{phone_finder.maxsoft.com.whereismyphone/PACKAGE.SpeechRecognizerResult}: java.lang.InstantiationException: can't instantiate class phone_finder.maxsoft.com.whereismyphone.SpeechRecognizerResult
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2034)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2135)
at android.app.ActivityThread.access$700(ActivityThread.java:140)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1237)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4921)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1038)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:805)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.InstantiationException: can't instantiate class phone_finder.maxsoft.com.whereismyphone.SpeechRecognizerResult
at java.lang.Class.newInstanceImpl(Native Method)
at java.lang.Class.newInstance(Class.java:1319)
at android.app.Instrumentation.newActivity(Instrumentation.java:1068)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2025)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2135)
at android.app.ActivityThread.access$700(ActivityThread.java:140)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1237)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4921)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1038)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:805)
at dalvik.system.NativeStart.main(Native Method)
我的应用会识别单词，例如。移动之后它会做点什么。我发现GoogleSpeechRecognizer很简单。如下所示：
public abstract class SpeechRecognizerResult extends Activity implements SpeechRecognizerManager.OnResultListener {
private final String TAG = getClass().getSimpleName();
private SpeechRecognizerManager mSpeechRecognizerManager;
private TextView txt_result;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.recognizer_listener);
mSpeechRecognizerManager =new SpeechRecognizerManager(this);
mSpeechRecognizerManager.setOnResultListner(this);
txt_result= (TextView) findViewById(R.id.text_result);
}
@Override
public void OnResult(ArrayList<String> commands) {
for(String command:commands) {
if (command.equals("mobile")){
Toast.makeText(this, "You said:" + command, Toast.LENGTH_SHORT).show();
txt_result.setText(command);
return;
}
}
}
}
和
public class SpeechRecognizerManager {
private Context mContext;
protected android.speech.SpeechRecognizer mGoogleSpeechRecognizer;
protected Intent mSpeechRecognizerIntent;
private OnResultListener mOnResultListener;
public SpeechRecognizerManager(Context context) {
this.mContext = context;
initGoogleSpeechRecognizer();
}
private void initGoogleSpeechRecognizer() {
mGoogleSpeechRecognizer = android.speech.SpeechRecognizer
.createSpeechRecognizer(mContext);
mGoogleSpeechRecognizer.setRecognitionListener(new GoogleRecognitionListener());
mSpeechRecognizerIntent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
mSpeechRecognizerIntent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
mSpeechRecognizerIntent.putExtra(RecognizerIntent.EXTRA_CONFIDENCE_SCORES, true);
}
public void destroy() {
if (mGoogleSpeechRecognizer != null) {
mGoogleSpeechRecognizer.cancel();
;
mGoogleSpeechRecognizer.destroy();
}
}
protected class GoogleRecognitionListener implements
android.speech.RecognitionListener {
private final String TAG = GoogleRecognitionListener.class
.getSimpleName();
@Override
public void onBeginningOfSpeech() {
}
@Override
public void onEndOfSpeech() {
}
@Override
public void onReadyForSpeech(Bundle params) {
}
@Override
public void onRmsChanged(float rmsdB) {
}
@Override
public void onBufferReceived(byte[] buffer) {
}
@Override
public void onError(int error) {
Log.e(TAG, "onError:" + error);
}
@Override
public void onPartialResults(Bundle partialResults) {
Log.d(TAG, "onPartialResultsheard:");
}
@Override
public void onResults(Bundle results) {
if ((results != null)
&& results
.containsKey(android.speech.SpeechRecognizer.RESULTS_RECOGNITION)) {
ArrayList<String> heard = results
.getStringArrayList(android.speech.SpeechRecognizer.RESULTS_RECOGNITION);
float[] scores = results
.getFloatArray(android.speech.SpeechRecognizer.CONFIDENCE_SCORES);
for (int i = 0; i < heard.size(); i++) {
Log.d(TAG, "onResultsheard:" + heard.get(i)
+ " confidence:" + scores[i]);
}
//send list of words to activity
if (mOnResultListener!=null){
mOnResultListener.OnResult(heard);
}
}
}
@Override
public void onEvent(int eventType, Bundle params) {
}
}
public void setOnResultListner(OnResultListener onResultListener){
mOnResultListener=onResultListener;
}
public interface OnResultListener{
public void OnResult(ArrayList<String> commands);
}