Question

If I send an sms to someone which says ” UPDATE”. so I can get the location of that person. I will make a Broadcast Receiver which will be active when any sms arrives. If it matches UPDATE then will send the location of the other user.

The Broadcast Receiver.

public void onReceive(Context context, Intent intent) 
{   
//this stops notifications to others
this.abortBroadcast();

//---get the SMS message passed in---
Bundle bundle = intent.getExtras();   
SmsMessage[] msgs = null;
String str = "";            
if (bundle != null)
{
//---retrieve the SMS message received---
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 from " + msgs[i].getOriginatingAddress();
    from = msgs[i].getOriginatingAddress();
    str += " :";
    str += msgs[i].getMessageBody().toString();
    msg = msgs[i].getMessageBody().toString();
    str += "\n"; 
}
if(checksomething){
    //make your actions
    //and no alert notification and sms not in inbox
}
else{
    //continue the normal process of sms and will get alert and reaches inbox
    this.clearAbortBroadcast();
}
  }

Answer 1

Do you need a service for getting your SMS????

if yes

in manifest:

<uses-permission android:name="android.permission.RECEIVE_SMS" />

and your service:

import android.app.Service;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;
import android.os.IBinder;
import android.telephony.SmsMessage;
import android.widget.Toast;

public class SrvSmsListener extends Service {

    private BroadcastReceiver IncomingSMSReceiver = new BroadcastReceiver() {
        private static final String SMS_RECEIVED =
                "android.provider.Telephony.SMS_RECEIVED";

        @Override
        public void onReceive(Context _context, Intent _intent) {
            if (_intent.getAction().equals(SMS_RECEIVED)) {
                Bundle bundle = _intent.getExtras();
                if (bundle != null) {
                    Object[] pdus = (Object[]) bundle.get("pdus");

                    SmsMessage[] messages = new SmsMessage[pdus.length];
                    for (int i = 0; i < pdus.length; i++)
                        messages[i] = SmsMessage
                                .createFromPdu((byte[]) pdus[i]);
                    for (SmsMessage message : messages) {
                        String strPhoneNo = message.getOriginatingAddress();
                        String msg = message.getMessageBody();

                        if (msg.startsWith("UPDATE"))
                        {
                            // this stops notifications to others
                            this.abortBroadcast();
                            // do what you want
                        }
                    }
                }
            }
        }
    };

    @Override
    public IBinder onBind(Intent arg0) {
        // TODO Auto-generated method stub
        return null;
    }

    @Override
    public void onCreate() {
        final String SMS_RECEIVED = "android.provider.Telephony.SMS_RECEIVED";
        IntentFilter filter = new IntentFilter(SMS_RECEIVED);
        BroadcastReceiver receiver = IncomingSMSReceiver;
        registerReceiver(receiver, filter);
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        return super.onStartCommand(intent, flags, startId);
    }

    @Override
    public void onDestroy() {
        if (IncomingSMSReceiver != null)
        {
            unregisterReceiver(IncomingSMSReceiver);
        }
    }
}