Android阴影----通过xml文件设置控件的阴影效果(转)

其实不是真正的阴影效果，只是模拟而已，不够完美 直接上代码：

<?xmlversion="1.0" encoding="utf-8"?>

<layer-listxmlns:android="http://schemas.android.com/apk/res/android" >

    <item >

        <shape >

            <cornersandroid:radius="25dp"/>

            <gradientandroid:startColor="#999999"

               android:endColor="#E4E4E4"

                android:type="linear"

               android:angle="90"/>

        </shape>

    </item>

     <item android:top="1dp"android:right="1dp" android:bottom="1dp"android:left="1dp">

        <shape >

            <cornersandroid:radius="25dp"/>

            <gradientandroid:startColor="#E9E9E9"

               android:endColor="#FFFFFF"

                android:type="linear"

               android:angle="90"/>

        </shape>

    </item>

</layer-list>