How to set an image to RelativeLayout Background

Question

I have a RelativeLayout with 2 Buttons inside.

One Button has layout_alignParentLeft="true" property and the other button has layout_alignParentRight="true"

I want set a background on my RelativeLayout that show an image in the middle. I have a play.9.png in my drawable and use following code:

<RelativeLayout
    android:id="@+id/relativeLayout12"
    android:layout_width="fill_parent"
    android:layout_height="70dp" 
    android:background="@drawable/play" // background line
 >

    <Button
        android:id="@+id/bAbout"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:text="but1" />

    <Button
        android:id="@+id/bSync"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_alignParentRight="true"
        android:layout_alignParentTop="true"
        android:text="but2" />
</RelativeLayout>

But when i use background line, my Buttons miss their position

See the image below

But i want my RelativeLayout be like this:

What is wrong?

Answer 1

finally i do it guys i used this code:

<RelativeLayout
    android:id="@+id/relativeLayout12"
    android:layout_width="fill_parent"
    android:layout_height="70dp" 
    android:background="@drawable/play" // background line
 >

    <Button
        android:id="@+id/bAbout"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:text="but1" />

    <ImageView
         android:layout_width="fill_parent"
         android:layout_height="match_parent"
         android:scaleType="fitXY"
         android:src="@drawable/play" />

    <Button
        android:id="@+id/bSync"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_alignParentRight="true"
        android:layout_alignParentTop="true"
        android:text="but2" />
</RelativeLayout>

and my result was like:

and this works. thanks everybody