在我的应用程序中，我使用 SMSManager 在后台向特定号码发送消息。我已经注册了接收者来验证我的消息的发送状态、传递状态。这工作正常。但是当我发送消息时，如果电话号码被关闭或SIM卡被移除并重新打开或SIM卡被重新插入，我的消息不会被发送。如何实现这个功能？
短信管理器代码
SmsManager sms = SmsManager.getDefault();
sms.sendTextMessage(phonenumber, null, message, sentPI, deliveredPI);
接收器：
smsSentReceiver = new BroadcastReceiver() {
public void onReceive(Context arg0, Intent arg1) {
switch(getResultCode())
{
case Activity.RESULT_OK:
Toast.makeText(getBaseContext(), "SMS Sent", Toast.LENGTH_LONG).show();
break;
case SmsManager.RESULT_ERROR_GENERIC_FAILURE:
Toast.makeText(getBaseContext(), "Sms failed due to generic failure", Toast.LENGTH_LONG).show();
break;
case SmsManager.RESULT_ERROR_NO_SERVICE:
Toast.makeText(getBaseContext(), "could not send the message due to unavailability of service.", Toast.LENGTH_LONG).show();
break;
case SmsManager.RESULT_ERROR_NULL_PDU:
Toast.makeText(getBaseContext(), "Null PDU", Toast.LENGTH_LONG).show();
break;
}
}
};
smsDeliveredReceiver = new BroadcastReceiver () {
public void onReceive(Context arg0, Intent arg1) {
switch(getResultCode())
{
case Activity.RESULT_OK:
Toast.makeText(getBaseContext(), "SMS Delivered", Toast.LENGTH_SHORT).show();
break;
case Activity.RESULT_CANCELED:
Toast.makeText(getBaseContext(), "SMS not Delivered", Toast.LENGTH_SHORT).show();
break;
}
}
};
registerReceiver(smsSentReceiver, new IntentFilter(SENT));
registerReceiver(smsDeliveredReceiver, new IntentFilter(DELIVERED ));
}