如何实现语音识别以启动应用程序？

Question

我是Android开发的小菜鸟，我正试图找出一种使用语音识别来启动我的应用程序的方法。我想在用户首次登录后开始在后台运行的RecognitionService。我想要不断运行并允许用户使用关键字启动应用程序。我将允许用户在设置活动中停止服务。目前，我能够启动该服务并使其在后台运行，但我一直无法知道如何调用RecognitionService中的onStartListening方法。任何解决这个问题的帮助都非常感谢

我的代码

public class VoiceRecognitionService extends RecognitionService { 

private SpeechRecognizer m_EngineSR; 

@Override 
public void onCreate() { 
    super.onCreate(); 
    Log.e("SimpleVoiceService", "Service started"); 
} 

@Override 
public void onDestroy() { 
    super.onDestroy(); 
    Log.e("SimpleVoiceService", "Service stopped"); 
} 

@Override 
protected void onCancel(Callback listener) { 
    m_EngineSR.cancel(); 
} 

@Override 
protected void onStartListening(Intent recognizerIntent, Callback listener) { //<--How Do I call this method? 
    m_EngineSR.setRecognitionListener(new VoiceResultsListener(listener)); 
    m_EngineSR.startListening(recognizerIntent); 
} 

@Override 
protected void onStopListening(Callback listener) { 
    m_EngineSR.stopListening(); 
} 


/** 
* 
*/ 
private class VoiceResultsListener implements RecognitionListener { 

    private Callback m_UserSpecifiedListener; 

    /** 
    * 
    * @param userSpecifiedListener 
    */ 
    public VoiceResultsListener(Callback userSpecifiedListener) { 
     m_UserSpecifiedListener = userSpecifiedListener; 
    } 

    @Override 
    public void onBeginningOfSpeech() { 
     try { 
      m_UserSpecifiedListener.beginningOfSpeech(); 
     } catch (RemoteException e) { 
      e.printStackTrace(); 
     } 
    } 

    @Override 
    public void onBufferReceived(byte[] buffer) { 
     try { 
      m_UserSpecifiedListener.bufferReceived(buffer); 
     } catch (RemoteException e) { 
      e.printStackTrace(); 
     } 
    } 

    @Override 
    public void onEndOfSpeech() { 
     try { 
      m_UserSpecifiedListener.endOfSpeech(); 
     } catch (RemoteException e) { 
      e.printStackTrace(); 
     } 
    } 

    @Override 
    public void onError(int error) { 
     try { 
      m_UserSpecifiedListener.error(error); 
     } catch (RemoteException e) { 
      e.printStackTrace(); 
     } 
    } 

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

    @Override 
    public void onPartialResults(Bundle partialResults) { 
     try { 
      m_UserSpecifiedListener.partialResults(partialResults); 
     } catch (RemoteException e) { 
      e.printStackTrace(); 
     } 
    } 

    @Override 
    public void onReadyForSpeech(Bundle params) { 
     try { 
      m_UserSpecifiedListener.readyForSpeech(params); 
     } catch (RemoteException e) { 
      e.printStackTrace(); 
     } 
    } 

    @Override 
    public void onResults(Bundle results) { 
     try { 
      m_UserSpecifiedListener.results(results); 
      Log.e("SimpleVoiceService Results:", "Service stopped"); 

      ArrayList<String> result = results.getStringArrayList("results_recognition"); 

      Log.e("SimpleVoiceService Results:", result.get(0)); 
      if (result.isEmpty() == false) { 
       for (int i = 0; i<(result.size()-1);i++) { 
        if(result.get(i).equals("shoot back")||result.get(i).equals("Launch App")){ 
         Intent intent2 = new Intent("com.bmoney.testapp.MAIN_ACTIVITY"); 
         startActivity(intent2); 
         break; 

        } 
       } 
      } 



     } catch (RemoteException e) { 
      e.printStackTrace(); 
     } 
    } 

    @Override 
    public void onRmsChanged(float rmsdB) { 
     try { 
      m_UserSpecifiedListener.rmsChanged(rmsdB); 
     } catch (RemoteException e) { 
      e.printStackTrace(); 
     } 
    } 
} 

}

清单

<service android:name="com.bmoney.testapp.VoiceRecognitionService" android:exported="true" android:enabled="true"> 
     <intent-filter> 
      <action android:name="android.speech.RecognitionService" /> 
      <category android:name="android.intent.category.DEFAULT" /> 
     </intent-filter> 
    </service> 

Answer 1

虽然我还没有测试了这一点的机会，我想答案就在于this Android开发者博客文章。
虽然这个实现使用了“Ok Google”（我不知道这是否会让你困扰）。

总之你必须实现seachable activity并在AndroidManifest补充一点：

<activity android:name=".SearchableActivity"> 
    <intent-filter> 
     <action android:name="com.google.android.gms.actions.SEARCH_ACTION"/> 
     <category android:name="android.intent.category.DEFAULT"/> 
    </intent-filter> 
</activity>