Question

I'm doing a POC on text to speech.

有一种情况是，当设备在收件箱中收到新短信时，文本语音应该告诉用户“您收到了一条新邮件”。但是，文本到语音不能正在加载或收听。

public class SMSReceiver extends BroadcastReceiver implements TextToSpeech.OnInitListener
{
    TextToSpeech t1;
    @SuppressWarnings("deprecation")
    @Override
    public void onReceive(Context context, Intent intent) 
    {
        //---get the SMS message passed in---
        Bundle bundle = intent.getExtras();        
        SmsMessage[] msgs = null;
        String str = "";            
        if (bundle != null)
        {
            //---retrieve the SMS message received---
            Object[] pdus = (Object[]) bundle.get("pdus");
            msgs = new SmsMessage[pdus.length];            
            for (int i=0; i<msgs.length; i++){
                msgs[i] = SmsMessage.createFromPdu((byte[])pdus[i]);                
                str += "SMS from " + msgs[i].getOriginatingAddress();                     
                str += " :";
                str += msgs[i].getMessageBody().toString();
                str += "\n";        
            }

            Toast.makeText(context, str, Toast.LENGTH_SHORT).show();
        }    

    }


    @Override
    public void onInit(int status) {
        // TODO Auto-generated method stub
         if (status == TextToSpeech.SUCCESS) {
              int result = t1.setLanguage(Locale.US);
              if (result == TextToSpeech.LANG_MISSING_DATA
                || result == TextToSpeech.LANG_NOT_SUPPORTED) {
                  Log.e("TTS", "This Language is not supported");
              }
              speakOut();
            } else {
              Log.e("TTS", "Initilization Failed!");
            }
    }

    private void speakOut() {
          t1.speak("You have one new message would you like to read it", TextToSpeech.QUEUE_FLUSH, null);
      }
}

这是我的短信接收方法。在这里，我可以正确地发送和接收短信，但在阅读消息后，文字演讲无效，任何人都可以为我提供解决方案。

Answer 1

检查您的日志。首先，t1为空，所以你将获得NPE，另一件事是你不应该在广播接收器中执行繁重的任务，而是从那里开始调用IntentService。还记得调用构造函数。详细信息： http://developer.android.com/reference/android/speech/tts/TextToSpeech.html#TextToSpeech(android.content.Context，android.speech.tts.TextToSpeech.OnInitListener）

Answer 2

对于要调用的onInit()方法，您必须初始化TextToSpeech的对象，如下所示：

t1 = new TextToSpeech(this, this);

如何在广播接收器中添加文本到语音

2 个答案: