Android - Manejo de envio, procesamiento y recepción de mensajes SMS

import android.content.BroadcastReceiver;

import android.content.Context;

import android.content.Intent;

import android.os.Bundle;

import android.telephony.SmsMessage;

import android.widget.Toast;

import android.support.design.widget.FloatingActionButton;

import android.support.design.widget.Snackbar;

import android.support.v7.app.AppCompatActivity;

import android.support.v7.widget.Toolbar;

import android.view.View;

public class SMSReceiver extends BroadcastReceiver {

    @Override

    public void onReceive(Context context, Intent intent) {

        Bundle bundle= intent.getExtras();

        SmsMessage [] msgs=null;

        String str="";

        if(bundle!=null){

            Object[] pdus=(Object[]) bundle.get("pdus");

            msgs=new SmsMessage[pdus.length];

            for (int i=0;i<msgs.length;i++){

                msgs[i]=SmsMessage.createFromPdu((byte[])pdus[i]);

                str+="SMS de"+msgs[i].getOriginatingAddress();

                str+=" :";

                str+= msgs[i].getMessageBody().toString();

                str+="";

            }

            Toast.makeText(context,str,Toast.LENGTH_LONG).show();

        }

    }

}