android 多次调用PendingIntent.getBroadcast intent数据不更新问题

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实验环境：

windows 7

Android Developer Tools

Build: v21.1.0-569685

今日在开发一个小app的时候遇到一个问题：

该app需要实现本机发送短信，遂，通过

SmsManager +　PendingIntent.getBroadcast　的方式实现，因为短信队列里包含多个号码，且发送完毕后需要更新发送状态，所以需要在BroadcastReceiver回调中得到发送短信的ＩＤ，大体实现如下（大家也可以参考下具体发送短信的机制）：

1、接收短信发送后的回调函数：

private SmsManager sms;private BroadcastReceiver sendBroadcastReceiver;private BroadcastReceiver deliveryBroadcastReceiver;public void initSmsBroadcast() {        sms = SmsManager.getDefault();        sendBroadcastReceiver = new BroadcastReceiver() {            @Override            public void onReceive(Context _context, Intent _intent) {                Bundle b = _intent.getExtras();                  Object[] lstName = b.keySet().toArray();                  String phone_number = "";                String sms_id = "";                for(int i = 0; i < lstName.length; i++)                  {                      String keyName=lstName[i].toString();                      if (keyName.equals("phone")) {                        phone_number = b.get(keyName).toString();                    }                    if (keyName.equals("sms_id")) {                        sms_id = b.get(keyName).toString();                    }                }                 switch (getResultCode()) {                case Activity.RESULT_OK:                    receiveSmsLog("SEND", "to:" + phone_number + "- SMS sent success actions");                    break;                case SmsManager.RESULT_ERROR_GENERIC_FAILURE:                    receiveSmsLog("SEND", "to:" + phone_number + "- SMS generic failure actions");                    break;                case SmsManager.RESULT_ERROR_RADIO_OFF:                    receiveSmsLog("SEND", "to:" + phone_number + "- SMS radio off failure actions");                    break;                case SmsManager.RESULT_ERROR_NULL_PDU:                    receiveSmsLog("SEND", "to:" + phone_number + "- SMS null PDU failure actions");                    break;                }            }        };        registerReceiver(sendBroadcastReceiver , new IntentFilter(SENT_SMS_ACTION));         deliveryBroadcastReceiver = new BroadcastReceiver() {            @Override            public void onReceive(Context _context, Intent _intent) {                Bundle b = _intent.getExtras();                  Object[] lstName = b.keySet().toArray();                  String phone_number = "";                String sms_id = "";                for(int i = 0; i < lstName.length; i++)                  {                      String keyName=lstName[i].toString();                      if (keyName.equals("phone")) {                        phone_number = b.get(keyName).toString();                    }                    if (keyName.equals("sms_id")) {                        sms_id = b.get(keyName).toString();                    }                }                 Log.d("sms_id", sms_id + "");                receiveSmsLog("DELIVER", "to:" + phone_number + "- SMS delivered actions");            }        };        registerReceiver(deliveryBroadcastReceiver, new IntentFilter(DELIVERED_SMS_ACTION));    }

2、开始发送短信：

private int pend_times  = 0;public void sendSms(final int sms_id, final String phone_number, String msg_str) {        Intent sentIntent    = new Intent(SENT_SMS_ACTION);        sentIntent.putExtra("sms_id", sms_id);        sentIntent.putExtra("phone", phone_number);         Intent deliverIntent = new Intent(DELIVERED_SMS_ACTION);        deliverIntent.putExtra("sms_id", sms_id);        deliverIntent.putExtra("phone", phone_number);        pend_times++;        PendingIntent sentPI     = PendingIntent.getBroadcast(this, pend_times, sentIntent, PendingIntent.FLAG_UPDATE_CURRENT);        PendingIntent deliverPI  = PendingIntent.getBroadcast(this, pend_times, deliverIntent, PendingIntent.FLAG_UPDATE_CURRENT);         if (msg_str.length() > 70) {            ArrayList<String> msgs = sms.divideMessage(msg_str);            for (String msg : msgs) {                sms.sendTextMessage(phone_number, null, msg, sentPI, deliverPI);            }        } else {            sms.sendTextMessage(phone_number, null, msg_str, sentPI, deliverPI);        }    }

开始的时候多次发送短信成功，但是intent中的数据总是第一次传入的数据，其后就不能更新，通过google多次，尽一天的时间得到的结论是：

需要在PendingIntent.getBroadcast函数中设置第4个参数为 PendingIntent.FLAG_UPDATE_CURRENT

即：PendingIntent sentPI = PendingIntent.getBroadcast(this, 0, sentIntent, PendingIntent.FLAG_UPDATE_CURRENT);

但是我这里还是不能成功，百思不得其解啊。

于是就修改了第二个参数requestCode，即

private int pend_times  = 0; pend_times++;PendingIntent sentPI = PendingIntent.getBroadcast(this, pend_times, sentIntent, PendingIntent.FLAG_UPDATE_CURRENT);

测试通过，哈哈~~。

有的同学还提出修改了requestCode也没起作用，我建议同时修改

PendingIntent intent= PendingIntent.getBroadcast(Context context, int requestCode, Intent intent, int flags)的requestCode 和flags试试，好运~~

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