I'm using a bitmap as a background for activity. The code of the custom background is:

```
<item>
<bitmap android:src="@drawable/fog"
        android:layout_width="match_parent"
        android:adjustViewBounds="true"
             />
</item>

```

However it sits in the middle and doesn't occupy the entire screen space.
How can I make it fill all the available space?
I tried setting width and height to fill\_parent.

Thanks