I’m doing an android app and I want to separate layout in 3 parts like this:

but now the button is over the second listview but on the bottom of the screen, I don’t know why.
I don’t know if I have to use relativeLayout or linearLayout to including the listviews, and text are inside this or outside of relativelayout/linearLayout, and the last button what?
this is my code:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<TextView android:id="@+id/imageSelected"
android:text="@string/imgSelected"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:layout_marginBottom="3dip"/>
<LinearLayout
android:id="@+id/linearLayoutImagenes"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_below="@+id/imageSelected" >
<ListView
android:id="@+id/listaFusionPhotos"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
/>
</LinearLayout >
<TextView android:id="@+id/nameSelected"
android:text="@string/namSelected"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:layout_below="@+id/linearLayoutImagenes"
android:layout_marginBottom="3dip"/>
<LinearLayout
android:id="@+id/linearLayoutNombres"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_below="@+id/nameSelected"
>
<ListView
android:id="@+id/listaFusionNombres"
android:layout_width="fill_parent"
android:layout_height="fill_parent"/>
</LinearLayout >
<Button
android:id="@+id/fusion"
android:layout_width="160dip"
android:layout_height="wrap_content"
android:layout_below="@+id/linearLayoutNombres"
android:layout_marginTop="3dip"
android:text="Fusionar"
android:onClick="Mostrar_Registrados"
android:layout_alignParentBottom="true"/>
</RelativeLayout>
Try this. this looks like exactly same of the picture.