Android : How can i use Broadcast Receiver in android?

I want to receive notification when the messages arrives with using Broadcast Receiver. I wrote this code but it doesnt work;

I added this code in my AndroidManifest class;

<receiver android:name=".receiver.SMSReceiver" >
    <intent-filter>
        <action android:name="android.provider.Telephony.SMS_RECEIVED" />
    </intent-filter>
</receiver>

And my SMSReceiver class;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.telephony.SmsMessage;
import android.util.Log;
import android.widget.Toast;

public class SMSReceiver extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {

    Bundle pudsBundle = intent.getExtras();
    Object[] pdus = (Object[]) pudsBundle.get("pdus");
    SmsMessage messages = SmsMessage.createFromPdu((byte[]) pdus[0]);
    Toast.makeText(context, "New SMS: " + messages.getMessageBody(),
        Toast.LENGTH_LONG).show();
    Log.d(getClass().getName().toString(), "SMS Arrived");
    }

}

This code must show me a Toast Message when SMS arrived. How can i fix this problem? Thank you.