xml文件源码：
<?xml version="1.0" encoding="UTF-8"?> <shape xmlns:android="http://schemas.android.com/apk/res/android"> <gradient android:startColor="#FFb9b9b9" android:endColor="#FF666465" android:angle="270.0" android:centerY="0.5" android:centerColor="#FF3d3d3d"> </gradient> <corners android:radius="10px" /> <padding android:left="0dp" android:top="0dp" android:right="0dp" android:bottom="0dp" /> </shape>
