語音識別在haddler似乎再次打開該活動每次

Question

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 
    returnedText = (TextView) findViewById(R.id.textView1); 
    progressBar = (ProgressBar) findViewById(R.id.progressBar1); 
    toggleButton = (ToggleButton) findViewById(R.id.toggleButton1); 

    progressBar.setVisibility(View.INVISIBLE); 
    speech = SpeechRecognizer.createSpeechRecognizer(this); 
    speech.setRecognitionListener(this); 
    recognizerIntent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH); 
    recognizerIntent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_PREFERENCE, 
      "en"); 
    recognizerIntent.putExtra(RecognizerIntent.EXTRA_CALLING_PACKAGE, 
      this.getPackageName()); 
    recognizerIntent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, 
      RecognizerIntent.LANGUAGE_MODEL_WEB_SEARCH); 
    recognizerIntent.putExtra(RecognizerIntent.EXTRA_MAX_RESULTS, 3); 


     toggleButton.setOnCheckedChangeListener(new OnCheckedChangeListener() { 


     @Override 
     public void onCheckedChanged(CompoundButton buttonView, 
            boolean isChecked) { 
      if (isChecked) { 
       progressBar.setVisibility(View.VISIBLE); 
       progressBar.setIndeterminate(true); 
       speech.startListening(recognizerIntent); 
      } else { 
       progressBar.setIndeterminate(false); 
       progressBar.setVisibility(View.INVISIBLE); 
       speech.stopListening(); 
      } 
     } 
    }); 
    ttsManager = new TTSManager(); 
    ttsManager.init(this); 

    Pause = (Button) findViewById(R.id.pause); 
    Stop = (Button) findViewById(R.id.stop); 
    Resume = (Button) findViewById(R.id.resume); 
    Pause.setVisibility(View.INVISIBLE); 
    Resume.setVisibility(View.INVISIBLE); 
    Stop.setVisibility(View.INVISIBLE); 


    // ------------------------------------- 


    //---------------------------------------- 


    handler = new android.os.Handler() { 
     public void handleMessage(android.os.Message msg) { 
      switch (msg.what) { 
       case RECIEVE_MESSAGE:             // if receive massage 
        byte[] readBuf = (byte[]) msg.obj; 
        String strIncom = new String(readBuf, 0, msg.arg1);     // create string from bytes array 
        sb.append(strIncom);            // append string 
        int endOfLineIndex = sb.indexOf("\r\n");       // determine the end-of-line 
        if (endOfLineIndex > 0) {           // if end-of-line, 
         String sbprint = sb.substring(0, endOfLineIndex);    // extract string 
         sb.delete(0, sb.length());          // and clear 
         Log.e("TAG", sbprint); 

         if(sbprint.contains("ello")){ 
          progressBar.setVisibility(View.VISIBLE); 
          progressBar.setIndeterminate(true); 
          speech.startListening(recognizerIntent); 
          toggleButton.setChecked(true); 

         } 




        } 
        //Log.d(TAG, "...String:"+ sb.toString() + "Byte:" + msg.arg1 + "..."); 
        break; 
      } 
     }; 
    }; 


    btAdapter = BluetoothAdapter.getDefaultAdapter();  // get Bluetooth adapter 
    checkBTState(); 

    //-------------------------------------- 


} 

我試圖激活語音像我按下toogleButton，我拷入從toogleButton代碼的處理程序。 一切都好，我的意思是如果我點擊toogleButton它的工作原理，但是當我在處理程序中收回了支票「ello」的消息時，speechRecognizer開始但很快關閉，每當我發送該消息時都會發生這種情況。

另外，它似乎是一個新的活動，當我觸發與該消息處理程序，但toogleButton工作相同的功能。

任何ideea我該如何做這項工作？我需要toogleButton的功能，但是在處理程序中也是這樣，所以我可以通過消息或處理程序內的某個東西來觸發speechRecognition。

Answer 1

我認爲問題是，你改變了toggleButton的狀態Handler

toggleButton.setChecked(true); 

內，這將觸發OnCheckedChangeListener。但是這應該再次啓動語音識別（因爲您將其設置爲true），而不是停止它。

儘量只toggleButton.setChecked(true);叫你Handler，看看是否能解決的問題，例如：

if(sbprint.contains("ello")){ 
    toggleButton.setChecked(true); 
}