android shape设置背景风格为圆角

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item>
        <shape>
            <corners
                android:topLeftRadius="10dp"
                  android:topRightRadius="10dp"
                />
            <solid android:color="#9fcffd"/>
        </shape>
    </item>
</layer-list>