从Intent服务发送短信 - 无法接收广播以检查是否发送了短信

Question

我的应用程序是关于地理围栏。触发地理围栏时，我需要发送短信。

它几乎完美，但我无法接收广播来检查是否发送了短信。我会解释一下自己：

当用户输入地理围栏时，会调用Geofence Intent Service，并发送短信。它就像一个魅力，但我需要确保短信已经发送，或者有任何问题（即没有信号），并尝试再次发送。

所以，首先我尝试以这种方式发送短信：

    private void sendsms() {

        String SMS_SENT = "SMS_SENT";
        final PendingIntent sentPendingIntent = PendingIntent.getBroadcast(this, 0, new Intent(), PendingIntent.FLAG_UPDATE_CURRENT);

// check if SMS has been sent
        smsSentReceiver =new BroadcastReceiver() {
            @Override
            public void onReceive(Context context, Intent intent) {
                switch (getResultCode()) {
                    case Activity.RESULT_OK:
                        Log.e("SMS", "SMS sent successfully");
                        break;
                    case SmsManager.RESULT_ERROR_GENERIC_FAILURE:
                        Log.e("SMS","Generic failure cause");
                        break;
                    case SmsManager.RESULT_ERROR_NO_SERVICE:
                        Log.e("SMS", "Service is currently unavailable");
                        break;
                    case SmsManager.RESULT_ERROR_NULL_PDU:
                        Log.e("SMS", "No pdu provided");
                        break;
                    case SmsManager.RESULT_ERROR_RADIO_OFF:
                        Log.e("SMS", "Radio was explicitly turned off");
                        break;
                }
            }
        };


        registerReceiver(smsSentReceiver, new Intent());

        // Get the default instance of SmsManager
        // Send a text based SMS
        SmsManager smsMgr = SmsManager.getDefault();
        smsMgr.sendTextMessage(towhom, null, customtxt, sentPendingIntent, null);

这有效，但发送短信后没有任何反应，根本没有日志。

然后我尝试了另一种方式，创建接收器并放入清单：

private smsSentReceiver smsSentReceiver;

private void sendsms() {

        final PendingIntent sentPendingIntent = PendingIntent.getBroadcast(this, 0, new Intent(), PendingIntent.FLAG_UPDATE_CURRENT);

        smsSentReceiver = new smsSentReceiver();
        registerReceiver(smsSentReceiver, new IntentFilter());

        // Get the default instance of SmsManager
        // Send a text based SMS
        SmsManager smsMgr = SmsManager.getDefault();
        smsMgr.sendTextMessage(towhom, null, customtxt, sentPendingIntent, null);

这是smsSentReceiver.java

public class smsSentReceiver extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {
        switch (getResultCode()) {
            case Activity.RESULT_OK:
                Log.e("SMS", "SMS sent successfully");
                break;
            case SmsManager.RESULT_ERROR_GENERIC_FAILURE:
                Log.e("SMS","Generic failure cause");
                break;
            case SmsManager.RESULT_ERROR_NO_SERVICE:
                Log.e("SMS", "Service is currently unavailable");
                break;
            case SmsManager.RESULT_ERROR_NULL_PDU:
                Log.e("SMS", "No pdu provided");
                break;
            case SmsManager.RESULT_ERROR_RADIO_OFF:
                Log.e("SMS", "Radio was explicitly turned off");
                break;
        }
    }
}

和清单：

<receiver
            android:name=".smsSentReceiver"
            android:enabled="true"
            >

        </receiver>

没有关于短信状态的日志...

关于为什么我没有获得短信状态的任何想法？

PS：只在模拟器上测试过

编辑：

根据@Mike M.的评论，我最后尝试的是这个。

private void sendsms() {

        final PendingIntent sentPendingIntent = PendingIntent.getBroadcast(this, 0, new Intent(this, smsSentReceiver.class), PendingIntent.FLAG_CANCEL_CURRENT);

 SmsManager smsMgr = SmsManager.getDefault();
        smsMgr.sendTextMessage(towhom, null, customtxt, sentPendingIntent, null);

但仍然没有......