Codename One中Android上的语音识别简单示例

我希望能够在使用Android时将语音识别集成到Codename One应用程序中，所以我决定创建一个小例子 . 这是我做的：

我创建了一个新的应用程序，然后我跟着this link，所以我创建了一个本机访问接口：

public interface SpeechRecognition extends NativeInterface {
   void startListening();
   String getResult();
}

主要表单如下所示：

SpeechRecognition speechRecognition = NativeLookup.create(SpeechRecognition.class);

    Form hi = new Form("Hi World");
    Button startButton = new Button("start");
    Button stopButton = new Button("stop");
    Label label = new Label("non");
    startButton.addActionListener(event -> {
        if (speechRecognition != null && speechRecognition.isSupported()) {
            speechRecognition.startListening();
        }
    });

    stopButton.addActionListener(event -> {
        if (speechRecognition != null && speechRecognition.isSupported()) {
            label.setText(speechRecognition.getResult());
        }
    });
    hi.addComponent(startButton);
    hi.addComponent(stopButton);
    hi.addComponent(label);
    hi.show();

基本上我想要每当我点击“开始”，语音识别开始收听，停止时 - 用识别结果更新标签 . 然后我生成了本机访问，在android实现中我使用了以下内容：

public class SpeechRecognitionImpl {
//maybe use a getter for message to get the last event
static String message = "";
static String speech = "";
private SpeechRecognizer sr;

public void startListening() {
    //initialize the Intent

    final Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
    intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL,
            RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
    intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE, Locale.getDefault());

    intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL,
            RecognizerIntent.LANGUAGE_MODEL_WEB_SEARCH);
    //number of guesses
    intent.putExtra(RecognizerIntent.EXTRA_MAX_RESULTS, 3);
    //Speechrecognition must be run on main Thread

    Activity activity = AndroidNativeUtil.getActivity();
    activity.runOnUiThread(new Runnable() {
        @Override
        public void run() {
            sr = SpeechRecognizer.createSpeechRecognizer(AndroidNativeUtil.getActivity());
            sr.setRecognitionListener(new listener());
            sr.startListening(intent);
        }
    });
}


public String getResult() {
    return speech;
}

public boolean isSupported() {
    return true;
}

class listener implements RecognitionListener {

    public void onReadyForSpeech(Bundle params) {
        message = "onReadyForSpeech";
    }

    public void onBeginningOfSpeech() {
        message =  "onBeginningOfSpeech";
    }

    public void onRmsChanged(float rmsdB) {
        message =  "onRmsChanged";
    }

    public void onBufferReceived(byte[] buffer) {
        message =  "onBufferReceived";
    }

    public void onEndOfSpeech() {
        message =  "onEndofSpeech";
    }

    public void onError(int error) {
        message =  "error " + error;
    }

    public void onResults(Bundle results) {
        //here you have what google understand from the speech
        //maybe only save the first guess, which would have the highest
        //possibility
        speech += "on results";
        String str = "";

        ArrayList data = results.getStringArrayList(SpeechRecognizer.RESULTS_RECOGNITION);
        for (int i = 0; i < data.size(); i++) {

            str += data.get(i)+";";
        }
        speech += str;
    }

    public void onPartialResults(Bundle partialResults) {
        message =  "onPartialResults";

    }

    public void onEvent(int eventType, Bundle params) {

        message =  "onEvent " + eventType;
    }
}

这基本上是复制粘贴“应该”工作的例子 . 但是，当我在我的Android应用程序上运行它时，绝对没有任何反应 . 有人有成功吗？