短信监听程序，收到短信就报错

先把异常贴出来吧，参考下面的代码：
   @Override
    public void onReceive(Context context, Intent intent)
    {
        Log.d(LOG_TAG, "onReceive SMS");
        // 第一步、获取短信的内容和发件人  
        StringBuilder body = new StringBuilder();// 短信内容  
        StringBuilder number = new StringBuilder();// 短信发件人  
        Bundle bundle = intent.getExtras();
        if (bundle != null)
        {
            Object[] _pdus = (Object[]) bundle.get("pdus");
            SmsMessage[] message = new SmsMessage[_pdus.length];
            for (int i = 0; i < _pdus.length; i++)
            {
                message[i] = SmsMessage.createFromPdu((byte[]) _pdus[i]);
            }
            for (SmsMessage currentMessage : message)
            {
                body.append(currentMessage.getDisplayMessageBody());
                number.append(currentMessage.getDisplayOriginatingAddress());
            }
            String smsBody = body.toString();
            String smsNumber = number.toString();
             Log.d(LOG_TAG, smsNumber + ", " + smsBody);            String smsTrialCode = null;            String smsPrefix = context.getString(R.string.bmptrial_sms_host) + "/";
            if (smsBody.contains(smsPrefix)) //我们公司的短信
            {
                // 屏蔽10086发来的短信  
                try
                {
                    int indexOfPix = smsBody.indexOf(smsPrefix);
                    int index = indexOfPix + smsPrefix.length();
                    smsTrialCode = smsBody.substring(index, index + 4);
                      Log.i(LOG_TAG, "SMS Trial Code: " + smsTrialCode);
                }
                catch (Exception e)
                {
                   Log.e(LOG_TAG, "SMS Exception: " + e.toString());
                    e.printStackTrace();
                }
            }
        }
        
    }