http  레이아웃 생성 - my_http_demo.xml

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

             android:orientation="vertical" android:layout_width="fill_parent"

             android:layout_height="fill_parent">

             <LinearLayout android:orientation="horizontal"

                           android:layout_width="fill_parent" android:layout_height="wrap_content">

              <Spinner android:id="@+id/sp" android:layout_height="wrap_content"

                           android:layout_width="wrap_content" 

                           android:layout_weight="1"/>

             <Button android:id="@+id/go_button" android:layout_height="wrap_content"

                           android:layout_width="wrap_content" android:text="검색"/>

             </LinearLayout>

             <ListView android:id="@android:id/list"

                           android:drawSelectorOnTop="false" android:layout_width="fill_parent"

                           android:layout_height="fill_parent" />                   

</LinearLayout>