TextToSpeech应用程序..调用没有UI

Question

如何从TextToSpeech类调用TextToSpeech类没有任何UI ..在应用程序中只有一个布局，主类使用..现在我的任务是使app speak ans根据情况与用户互动..

Answer 1

 //decleration 
    TextToSpeech talker; 
Button speakButton; 

//onCreate 
talker = new TextToSpeech(this, this); 
    speakButton=new Button(this); 

// Check to see if a recognition activity is present 
     PackageManager pm = getPackageManager(); 
     List<ResolveInfo> activities = pm.queryIntentActivities(
       new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH), 0); 
     if (activities.size() != 0) { 
      speakButton.setOnClickListener(new OnClickListener() { 

      public void onClick(View v) { 
       // TODO Auto-generated method stub 
       startVoiceRecognitionActivity(); 
      } 
     }); 
     } else { 
      speakButton.setEnabled(false); 
      speakButton.setText("Recognizer not present"); 
     } 


/** 
    * Fire an intent to start the speech recognition activity. 
    */ 
    private void startVoiceRecognitionActivity() { 
     Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH); 
     intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, 
       RecognizerIntent.LANGUAGE_MODEL_FREE_FORM); 
     intent.putExtra(RecognizerIntent.EXTRA_PROMPT, "Speech recognition demo"); 
     startActivityForResult(intent, VOICE_RECOGNITION_REQUEST_CODE); 


    } 

/** 
    * Handle the results from the recognition activity. 
    */ 

    protected void onActivityResult(int requestCode, int resultCode, Intent data) { 
     if (requestCode == VOICE_RECOGNITION_REQUEST_CODE && resultCode == RESULT_OK) { 
      // Fill the list view with the strings the recognizer thought it could have heard 
      ArrayList<String> matches = data.getStringArrayListExtra(
        RecognizerIntent.EXTRA_RESULTS); 

      // Toast.makeText(VoiceRecognition.this, matches.get(0), 5000).show(); 
     String device = "Bedroom"; 
      /* mList.setAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, 
     matches));  
      */ 
      txt.setText(""+matches.get(0)); 
      String host = "http://web2.anzleads.com/Android/nimboPani/web-service.php?tmote="; 
      String userCommand = URLEncoder.encode(matches.get(0)); 
      String deviceSelected = "&org=" + device; 
      res = getServerResponse(host + userCommand + deviceSelected); 
      say(""+ res); 
      Toast.makeText(VoiceRecognition.this,res ,5000).show(); 


     } 

     super.onActivityResult(requestCode, resultCode, data); 
    } 


    public void say(String text2say){ 
        talker.speak(text2say, TextToSpeech.QUEUE_FLUSH, null); 
       } 


    public void onInit(int status) { 
     // TODO Auto-generated method stub 
    // say("Hello World"); 
    } 


      public void onDestroy() { 
      if (talker != null) { 
       talker.stop(); 
       talker.shutdown(); 
       } 

       super.onDestroy(); 
      } 
public String getServerResponse(String url) 
    { 
     String result = ""; 
     HttpClient hc = new DefaultHttpClient(); 
     HttpResponse hr ; 
     HttpGet hg = new HttpGet(url); 
     try 
     { 
      hr = hc.execute(hg); 
      if(hr.getStatusLine().getStatusCode() == 200) 
      { 
       HttpEntity he = hr.getEntity(); 
       if (he != null) 
       { 
        InputStream is = he.getContent(); 
         result = convertStreamToString(is); 
         is.close(); 

       } 
      } 
     } 



     catch (Exception e) { 
      // TODO: handle exception 
     } 

     return result; 

    } 


    private String convertStreamToString(InputStream instream) { 
     BufferedReader reader = new BufferedReader(new InputStreamReader(instream)); 
     StringBuilder sb = new StringBuilder(); 


     String line = null; 
     try { 
      while ((line = reader.readLine()) != null) { 
       sb.append(line + "\n"); 
      } 
     } catch (IOException e) { 
      e.printStackTrace(); 
     } finally { 
      try { 
       instream.close(); 
      } catch (IOException e) { 
       e.printStackTrace(); 
      } 
     } 

     return sb.toString(); 

    } 

Answer 2

您不需要有UI或Activity来使用TextToSpeech。