I have two xml files. One xml file is a Shape and the other is a selector. My codes:
The shape:
   <shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle" >
<stroke
    android:width="2dp"
    android:color="#33CCCC" />
<gradient
    android:angle="225"
    android:endColor="#DD33FF66"
    android:startColor="#DD000000" />
<corners
    android:bottomLeftRadius="7dp"
    android:bottomRightRadius="7dp"
    android:topLeftRadius="7dp"
    android:topRightRadius="7dp" />
The xml file for the selector consists of:
    <selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_focused="true" android:drawable="@drawable/panel_picture_frame_bg_focus_blue" />
<item android:state_pressed="true" android:drawable="@drawable/panel_picture_frame_bg_pressed_blue" />
<item android:drawable="@drawable/panel_picture_frame_bg_normal" />
My main problem is how can I use these two files as a background for a single layout element.