android - SMS 通知的行为

Question

现在我正在尝试使用以下代码以编程方式发送 SMS，但我不了解 SMS SENT 接收器的行为。

1) for example if i send one SMS then Activity.RESULT_OK inside registerReceiver is being called 3 times. and if i send 3 SMS using for loopby calling sendSMS then Activity.RESULT_OK is being called 9 times. now i really don't know for one sms to send why this registerReceiver is being called so many times?

2) Moreover , when i run this code over emulator i passed emulator port to send SMS to other emulators which is natural but when i try to send SMS to a real number then i am not getting SMS delivery failure notification , as it notifies Activity.RESULT_OK only

发送短信的代码

private void sendSMS(String phoneNumber, String message)
        {      

            String SENT = "SMS_SENT";
            String DELIVERED = "SMS_DELIVERED";

            PendingIntent sentPI = PendingIntent.getBroadcast(this, 0,
                new Intent(SENT), 0);

            PendingIntent deliveredPI = PendingIntent.getBroadcast(this, 0,
                new Intent(DELIVERED), 0);
            Log.d("SMS Service", "SMS SEND CALLED");
            //---when the SMS has been sent---
            registerReceiver(new BroadcastReceiver(){
                @Override
                public void onReceive(Context arg0, Intent arg1) {

                    Log.d("SMS Service", "RECEIVE CALLED");
                    switch (getResultCode())
                    {
                        case Activity.RESULT_OK:
                            Toast.makeText(SMSService.this, "SMS sent", 
                                    Toast.LENGTH_SHORT).show();
                            System.out.println("SMSService " + "SMS SENT");
                            break;
                        case SmsManager.RESULT_ERROR_GENERIC_FAILURE:
                            Toast.makeText(SMSService.this, "Generic failure", 
                                    Toast.LENGTH_SHORT).show();
                            System.out.println("SMSService " + "GENERIC FAILURE");                          
                            break;
                        case SmsManager.RESULT_ERROR_NO_SERVICE:
                            Toast.makeText(SMSService.this, "No service", 
                                    Toast.LENGTH_SHORT).show();
                            System.out.println("SMSService " + "NO SERVICE");
                            break;
                        case SmsManager.RESULT_ERROR_NULL_PDU:
                            Toast.makeText(SMSService.this, "Null PDU", 
                                    Toast.LENGTH_SHORT).show();
                            System.out.println("SMSService " + "Null PDU");
                            break;
                        case SmsManager.RESULT_ERROR_RADIO_OFF:
                            Toast.makeText(SMSService.this, "Radio off", 
                                    Toast.LENGTH_SHORT).show();
                            System.out.println("SMSService " + "Radio Off");
                            break;

                    }
                }
            }, new IntentFilter(SENT));

            //---when the SMS has been delivered---
            registerReceiver(new BroadcastReceiver(){
                @Override
                public void onReceive(Context arg0, Intent arg1) {
                    switch (getResultCode())
                    {
                        case Activity.RESULT_OK:
                            Toast.makeText(getBaseContext(), "SMS delivered", 
                                    Toast.LENGTH_SHORT).show();
                            System.out.println("SMSService " + "SMS Delivered");
                            break;
                        case Activity.RESULT_CANCELED:
                            Toast.makeText(getBaseContext(), "SMS not delivered", 
                                    Toast.LENGTH_SHORT).show();
                            System.out.println("SMSService " + "SMS not delivered");                            
                            break;                      
                    }
                }
            }, new IntentFilter(DELIVERED));        

            SmsManager sms = SmsManager.getDefault();
            sms.sendTextMessage(phoneNumber, null, message, sentPI, deliveredPI);               
        } 

Answer 1

一般来说，这取决于您发送的消息的大小——如果消息超过了单条消息限制(在您的情况下，这听起来像是单条消息限制的 3 倍左右)，那么您将收到一个发送和消息每个部分的发送报告。因为您不是手动拆分消息，所以您无法为每个部分指定不同的 Intent 。

值得一看SmsManager.divideMessage()自己拆分消息，然后在 SmsManager.sendMultiPartTextMessage()做实际的发送。这允许您为消息的不同部分指定不同的待定 Intent ，因此您可以确定消息最终发送的时间。

我认为模拟器将所有消息目的地视为准确的，因为没有网络可以返回并说否则你可能不会从模拟器发送失败(除非你做了类似将模拟器置于飞行模式的操作).根据经验，您肯定会在真实设备上得到这些错误代码。

编辑: 想一想，每次发送消息时你也在注册接收者，我使用的代码有一个 list 注册接收者。有可能你已经多次注册它(它会在你注册的上下文中存在)这会多次给你 - 这也会让它重复 3 条消息可能 9 次(假设注册第 3 次在第一次发送完成之前成功) - 可能，但我不知道可能性有多大。您可以通过在已注册的接收器中记录对象来进行相对较好的测试。

这是我用来发送短信的代码的精简版，它不会收到重复的短信回复:

ArrayList<String> split = SmsManager.getDefault().divideMessage(message);
ArrayList<PendingIntent> success = new ArrayList<PendingIntent>(partInfo.length);
Intent sendInt = null;
for (int i = 0; i < partInfo.length; i++)
{
   sendInt = new Intent(context.getPackageName() + RELAY_INTERNAL_RESPONSE);
   sendInt.putExtra(KEY_MESSAGEID, messageID);
   sendInt.putExtra(KEY_PART_NUMBER, i);
   sendInt.putExtra(KEY_REPLY_SEND_INTENT, sendIntAction);
   sendInt.putExtra(KEY_NUMBER, number);
   PendingIntent sendResult = PendingIntent.getBroadcast(context, i, sendInt, PendingIntent.FLAG_ONE_SHOT); //You have to use an incrementing request code to ensure you don't just get the same pending intent.
   success.add(sendResult);
}
ArrayList<PendingIntent> receipt = new ArrayList<PendingIntent>(partInfo.length);
sendInt = new Intent(context.getPackageName() + RELAY_INTERNAL_RECEIPT);
sendInt.putExtra(KEY_MESSAGEID, messageID);
sendInt.putExtra(KEY_REPLY_RECEIPT_INTENT, receiptIntAction);
sendInt.putExtra(KEY_NUMBER, number);
PendingIntent sendResult = PendingIntent.getBroadcast(context, nextReceiptCounter(context), sendInt, PendingIntent.FLAG_ONE_SHOT);
for (int i = 0; i < partInfo.length; i++)
{
   receipt.add(sendResult);
}
SmsManager sm = SmsManager.getDefault();
sm.sendMultipartTextMessage(target, null, split, success, receipt);

还有我的接收器定义:

<receiver android:name="<package>.SMSBroadcastModule" 
      android:enabled="true" 
      android:exported="false">
      <intent-filter>
                <action android:name="<package>.RELAY_INTERNAL_RESPONSE" />
                <action android:name="<package>.RELAY_INTERNAL_RESPONSE_RECEIPT" />
      </intent-filter>
</receiver>