shape sample

border.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle">
    <solid
        android:color="@android:color/holo_orange_light"/>
    <stroke
        android:width="8dip"
        android:color="#64ff0000" />
</shape>

main.xml

<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="@drawable/border"
    android:padding="32dip" >

    <Button
        android:id="@+id/button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:background="@drawable/selector_button"
        android:text="shape" />
</LinearLayout>

selector_button.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_pressed="true">
        <shape android:shape="rectangle">
            <corners
                android:radius="10dip" />
            <gradient
                android:angle="90"
                android:startColor="#333399"
                android:endColor="#ffffff" />
            <padding
                android:left="10dip"
                android:right="10dip"
                android:top="10dip"
                android:bottom="10dip" />
            <stroke
                android:width="3dip"
                android:color="#000033" />
        </shape>
    </item>
    <item android:state_focused="true">
        <shape android:shape="rectangle">
            <corners
                android:radius="10dip" />
            <gradient
                android:angle="90"
                android:startColor="#666699"
                android:endColor="#ffffff" />
            <padding
                android:left="10dip"
                android:right="10dip"
                android:top="10dip"
                android:bottom="10dip" />
            <stroke
                android:width="3dip"
                android:color="#000033" />
        </shape>
    </item>
    <item>
        <shape android:shape="rectangle">
            <corners
                android:radius="10dip" />
            <gradient
                android:angle="90"
                android:startColor="#666666"
                android:endColor="#ffffff" />
            <padding
                android:left="10dip"
                android:right="10dip"
                android:top="10dip"
                android:bottom="10dip" />
            <stroke
                android:width="3dip"
                android:color="#000033" />
        </shape>
    </item>
</selector>