Read a received SMS

Question

An App receives an SMS and from the text performs a function. For this it is necessary to read the SMS and make the comparison in the APP, but for this must read, word by word, line by line or make a comparison if it contains such a word in this SMS.

SMS will have the following content.

If a change of status occurs:
MONIT-110
E05-ATI
E06-DES

And that of all exits: STATUS-110
E01-DES
E02-DES
E03-DES
E04-DES
E05-DES
E06-DES
E07-DES
E08-DES
E09-DES
E10-DES
E11-DES
S01-DES
S02-DES
S03-DES
S04-DES
S05-DES
S06-DES

For each of these lines have a different command to execute.

Code responsible for MSG received:

public class ReceberSms extends BroadcastReceiver {
    private static final String CATEGORIA = "acqua";

    @Override
    public void onReceive(Context context, Intent intent) {
        Log.i(CATEGORIA, ">" + intent.getAction());

        Sms sms = new Sms();
        //Lê a mensagem
        SmsMessage msg = sms.receberMensagem(intent);
        String celular = msg.getDisplayOriginatingAddress();
        String mensagem = msg.getDisplayMessageBody();
        //pegar essa msg e jogar nas configurações

        String texto = "ReceberSms: recebeu sms[" + celular + "] -> " + mensagem;
        Log.i(CATEGORIA, texto);
        Toast.makeText(context, texto, Toast.LENGTH_SHORT).show();
}

}//fim

Answer 1

It may be necessary to build it through an object vector. Note this code:

import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;

public class ReceiveSMSActivity extends Activity{

    static TextView messageBox;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        messageBox=(TextView)findViewById(R.id.messageBox);
    }

    public static void updateMessageBox(String msg)
    {
        messageBox.append(msg);
    }

}

This one detects and processes the message:

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.telephony.SmsMessage;

public class TextMessageReceiver extends BroadcastReceiver{

    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){
            ReceiveSMSActivity.updateMessageBox("\nFrom: "+msg.getOriginatingAddress()+"\n"+
                    "Message: "+msg.getMessageBody()+"\n");
        }
    }
}

I think it lacks as another user said, a command, see if you can with this model above.

Answer 2

If the string la of the end of your code already contains line, message, which you read in the line below:

String mensagem = msg.getDisplayMessageBody();

You can use Split, as already mentioned by @Wakim, by breaking lines and dopois by '-', and finally a Switch to execute the commands, would look something like this:

String[] linhas = mensagem.split("\n"); // Veja qual o seu caracter de fim de linha.

for (String l : linhas){
   switch (l) {
         case "E01-DES":
             ...
             break;
         case "E02-DES":
             ...
         case ...

             break;
         default:
             Log.i("ALERTA","Sinal recebido não suportado: " + l);
     }
}

Note that this code is just one example, I would do this function with the Switch outside of FOR, or I would separate each line into two new Strings, and maybe do a generic function to perform each of the actions. But I’d need more information of your code for that.