从不同的活动接收监听器 onResults()

Question

我正在使用SpeechRecognizer 开发一个应用程序。我将在不同的活动中为不同的用途使用它，并且一直将相同的代码添加到不同的类有点脏。所以我将我的自定义 RecognitionListener 移到了一个新类。这样，我只需在需要时从我的活动中初始化它。但我无法在我当前的活动中找到一种方法来接收听众的结果（在这种情况下，ArrayList 识别语音的可能值）来使用它。

我尝试通过接口实现它，但我认为我以错误的方式实现它。我的监听器代码是这样的：

public class SpeechRecognitionListener implements RecognitionListener
{
    private final String TAG = "SpeechRecognitionListener";
private Intent mSpeechRecognizerIntent;
private SpeechRecognizer mSpeechRecognizer;

public SpeechRecognitionListener(Intent speechRecognizerIntent, SpeechRecognizer speechRecognizer ) {
    mSpeechRecognizerIntent = speechRecognizerIntent;
    mSpeechRecognizer = speechRecognizer;
}

@Override
public void onBeginningOfSpeech()
{
    //Log.d(TAG, "onBeginingOfSpeech");
}

@Override
public void onBufferReceived(byte[] buffer)
{

}

@Override
public void onEndOfSpeech()
{
    //Log.d(TAG, "onEndOfSpeech");
}

@Override
public void onError(int error)
{
    mSpeechRecognizer.startListening(mSpeechRecognizerIntent);

    //Log.d(TAG, "error = " + error);
}

@Override
public void onEvent(int eventType, Bundle params)
{

}

@Override
public void onPartialResults(Bundle partialResults)
{

}

@Override
public void onReadyForSpeech(Bundle params)
{
    Log.d(TAG, "onReadyForSpeech"); //$NON-NLS-1$
}

@Override
public void onResults(Bundle results)
{
    //I want to recieve this array in my main activity
    ArrayList<String> matches = results.getStringArrayList(SpeechRecognizer.RESULTS_RECOGNITION);

}

@Override
public void onRmsChanged(float rmsdB)
{
}
}

我只想在我当前的活动中接收onResult() 数组以使用它。

Answer 1

尝试先定义一个接口：

public interface RecognitionCallback
{
   abstract void onRecoginitionFinished(ArrayList<String> matches);
}

现在让你需要回调的活动实现这个接口。例如：

public class MainActivity extends AppCompatActivity implements RecognitionCallback {

  ...

  public void onRecognitionFinished(ArrayList<String> matches)
  {
     //do your things with the data
  }

}

同时添加 SpeechRecognitionListener 类的一些属性：

public class SpeechRecognitionListener implements RecognitionListener
{
    private final String TAG = "SpeechRecognitionListener";
    private Intent mSpeechRecognizerIntent;
    private SpeechRecognizer mSpeechRecognizer;
    private RecognitionCallback mCallback

    public SpeechRecognitionListener(Intent speechRecognizerIntent, SpeechRecognizer speechRecognizer, RecognitionCallback callback ) {
       mSpeechRecognizerIntent = speechRecognizerIntent;
       mSpeechRecognizer = speechRecognizer;
       mCallback = callback;

    ...

    public void onResults(Bundle results)
    {

       ArrayList<String> matches = results.getStringArrayList(SpeechRecognizer.RESULTS_RECOGNITION);
       mCallback.onRecognitionFinished(matches);
    }
}    

最后在你需要被回调的活动中写下：

   SpeechRecognitionListener listener = new SpeechRecognitionLinstner(intent,recognizer,this);