android - 使用循环向多个联系人发送短信

Question

我正在开发一个 android 短信应用程序。我必须向多个联系人发送短信。有一种方法可以向多个联系人发送短信，所以我使用了循环。以下是我的代码。

for (int i = 0; i < to_nums.size();i++) {

                sendSms(to_nums.get(i),  snd_txt.getText().toString() );


        }

public void sendSms(final String phoneNumber, final 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);

   //--- When the SMS has been sent --

    sendBroadcastReceiver=new BroadcastReceiver() {


        @Override
        public void onReceive(Context context, Intent intent) {
            // TODO Auto-generated method stub
            switch (getResultCode()) {

                case Activity.RESULT_OK:

                    Toast.makeText(getBaseContext(), "SMS sent",
                        Toast.LENGTH_SHORT).show();

                    break;

                case SmsManager.RESULT_ERROR_GENERIC_FAILURE:
                    Toast.makeText(getBaseContext(), "Generic failure",
                        Toast.LENGTH_SHORT).show();

                    break;
                case SmsManager.RESULT_ERROR_NO_SERVICE:
                    Toast.makeText(getBaseContext(), "No service",
                        Toast.LENGTH_SHORT).show();



                    break;
                case SmsManager.RESULT_ERROR_NULL_PDU:

                    Toast.makeText(getBaseContext(), "Null PDU",
                        Toast.LENGTH_SHORT).show();
                    break;
                case SmsManager.RESULT_ERROR_RADIO_OFF:

                    Toast.makeText(getBaseContext(), "Radio off",
                        Toast.LENGTH_SHORT).show();
                    break;



                default:
                    break;
            }
            context.unregisterReceiver(this);

        }
    };



    registerReceiver(sendBroadcastReceiver , new IntentFilter(SENT));






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





}

但是当我运行我的代码时，出现异常，提示“接收器未注册”。对于单个收件人，它可以正常工作。.如何按顺序注册和注销？请帮助我的 friend 。

Answer 1

你可以看看这些:

Sending SMS to multiple contacts stored in a textview

和

How to send sms to multiple contacts and get the result code for each of them in android

和

Sending sms to multiple people in android