<?xml version="1.0" encoding="utf-8"?><!--白色的圆角背景-->
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item>
        <shape android:shape="rectangle">
            <solid android:color="#f7f7f7" />
            <corners
                android:topLeftRadius="@dimen/dp_30"
                android:topRightRadius="@dimen/dp_30" />
        </shape>
    </item>

    <item android:top="@dimen/dp_3">
        <shape android:shape="rectangle">
            <solid android:color="@color/white" />
            <corners
                android:topLeftRadius="@dimen/dp_34"
                android:topRightRadius="@dimen/dp_34" />
        </shape>

    </item>
</layer-list>