shape stroke上下左右描边宽度修改

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item>
        <shape>
            <corners android:radius="180dp"/>
            <solid android:color="@color/black"/>
        </shape>
    </item>
    
    <item
        android:bottom="2.5dp"
        android:left="1dp"
        android:right="1dp"
        android:top="1.5dp">
        <shape>
            <corners android:radius="180dp"/>
            <solid android:color="@color/white"/>
        </shape>
    </item>
</layer-list>