<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">

    android:shape="rectangle" >

    <!-- 背景色 -->
        <gradient
            android:angle="45"
            android:endColor="#FFFFFF"
            android:centerColor="#FFFFFF"
            android:startColor="#FFFFFF"
            android:type="linear" />

    <!-- 角の丸み -->
    <corners android:radius="15dp" />

</shape>