res/layout - Unterverzeichnisse?

<RelativeLayout xmlns:android="[COLOR="red"]http://schemas.android.com/apk/res/android[/COLOR]"
    xmlns:tools="[COLOR="Red"]http://schemas.android.com/tools[/COLOR]"
    android:layout_width="match_parent"
    android:layout_height="match_parent" 
    tools:context=".MainActivity">

    <TextView android:text="@string/hello_world"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

</RelativeLayout>

package com.mycompany.myapplication.basics;

import android.app.Activity;
import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;

import com.mycompany.myapplication.R;

/**
 * Created by ak on 23.05.15.
 */
public class Start extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.[COLOR="red"]startbasics[/COLOR].start);
    }
}