Container, Image and Text: How to get it working together?

Well, I have a Container, an Image and some Texts (inside another container), this way:

<RelativeLayout height="wrap_content">
    <ImageView height="fill_parent"/>
    <LinearLayout>
        <TextView/>
        <TextView/>
    </LinearLayout>
<RelativeLayout/>

The image associated with ImageView (yes, it is a background image) is bigger than the height of all text together. Thus, I would like to "crop" it inside RelativeLayout. But that ImageView always take full size when I set it to fill_parent. :(

What can I do?

P.S.: I already tried to use that image as background of RelativeLayout. Not working also.

Pleaaase, help!!