divider_bg.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
<solid android:color="#d2691e" />
<size android:height="10dp" />
</shape>
代码设置
android:divider="@drawable/divider_bg"
android:showDividers="middle"
