receive SMS from a port

Question

I want to create app, that can receive SMS from port! but when run it, my msg.getMessageBody() returns null. How can I fixed it?

manifext.xml

<receiver android:name="data.SMSReceiver" android:enabled="true">
        <intent-filter>
            <action android:name="android.provider.telephony.SMS_RECEIVED" />
            <data android:scheme="sms"
                android:host="*"
                android:port="4030"/>
        </intent-filter>

Broadcast Receiver code

public class SMSReceiver extends BroadcastReceiver {

private static final String SHORTCODE = "+9810004473";

@Override
public void onReceive(Context context, Intent intent) {
    Bundle bundle = intent.getExtras();

    Object[] messages = (Object[])bundle.get("pdus");
    SmsMessage[] sms = new SmsMessage[messages.length];
    for(int n=0; n < messages.length; n++) {
        sms[n] = SmsMessage.createFromPdu((byte[]) messages[n]);
    }
    for(SmsMessage msg : sms) {
        if(TextUtils.equals(msg.getOriginatingAddress(), SHORTCODE)) {
            Toast.makeText(context, "SMS: " + msg.getMessageBody(), Toast.LENGTH_LONG).show();
        }
    }
}

}

My Toast show: SMS: null

There won't be a message body on a data SMS message. Use the `SmsMessage#getUserData()` method to retrieve the data, which will be in the form of a `byte` array, as shown in the accepted answer on the linked post above. — Mike M., Sep 27 '16 at 06:52

Milad Faridnia · Accepted Answer · 2016-09-27T11:29:16.073

0

You can replace this code with your code in onReceive:

// Get the object of SmsManager
final SmsManager sms = SmsManager.getDefault();

public void onReceive(Context context, Intent intent) {

    // Retrieves a map of extended data from the intent.
    final Bundle bundle = intent.getExtras();

    try {

      Bundle bundle = intent.getExtras(); 

        String recMsgString = "";            
        String fromAddress = "";
        SmsMessage recMsg = null;
        byte[] data = null;
        if (bundle != null)
        {
            //---retrieve the SMS message received---
           Object[] pdus = (Object[]) bundle.get("pdus");
            for (int i=0; i<pdus.length; i++){
                recMsg = SmsMessage.createFromPdu((byte[])pdus[i]);

                try {
                    data = recMsg.getUserData();
                } catch (Exception e){

                }
                if (data!=null){
                    for(int index=0; index<data.length; ++index)
                    {
                           recMsgString += Character.toString((char)data[index]);
                    } 
                }

                fromAddress = recMsg.getOriginatingAddress();
            }

    } catch (Exception e) {
        Log.e("SmsReceiver", "Exception smsReceiver" +e);

    }
}

OK, If you have encoded your message before and you want to decode it right now you must follow blew steps, But if not just delete your entire onReceive and replace my code. You are decrypting your message in a wrong place you must follow the exact steps I wrote. you must get the message here(after getting the data):

    if (data!=null){
                    for(int index=0; index<data.length; ++index)
                    {
                           recMsgString += Character.toString((char)data[index]);
                    } 
                }
String decryptedData = Base64.decode(recMsgString ,...)//add this line

And after getting the message string in recMsgString you can decrypt it using Base64 class.

edited Sep 27 '16 at 11:29

answered Sep 27 '16 at 08:06

Milad Faridnia

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NO!!! in your code, message is null !!! :( – Iman Salehi Sep 27 '16 at 08:56
TNX Milad! now, I can get Array of bytes from data = recMsg.getUserData() but, recMsgString has Byte Format! and new String(data, "UTF-8") not work :| – Iman Salehi Sep 27 '16 at 10:10
recMsgString is defined as string it can not be converted to byte. this line gets the message as string `for(int index=0; index – Milad Faridnia Sep 27 '16 at 10:22
recMsgString has BAD Format! because data was encoded! e.x : for "test message" that sent from portal, recMsgString equals to "dGVzdCBtZXNzYWdl" :| – Iman Salehi Sep 27 '16 at 10:38
MilaD!!! :))))) do it! data = Base64.decode(data,Base64.DEFAULT); String m1 = new String(data, "UTF-8"); – Iman Salehi Sep 27 '16 at 10:59
please post your code let me check them – Milad Faridnia Sep 27 '16 at 11:02
in my Manifest: ` ` – Iman Salehi Sep 27 '16 at 11:06
in my java: `... SmsMessage currentMessage = SmsMessage.createFromPdu((byte[]) pdusObj[i]); String phoneNumber = currentMessage.getDisplayOriginatingAddress(); data = currentMessage.getUserData(); String senderNum = phoneNumber; data = Base64.decode(data,Base64.DEFAULT); String message = new String(data, "UTF-8"); ... ` – Iman Salehi Sep 27 '16 at 11:08
Answer is updated – Milad Faridnia Sep 27 '16 at 11:55
Tnx dear Milad :) – Iman Salehi Sep 28 '16 at 07:05

receive SMS from a port

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