• 不显示分割线

添加
android:divider="@android:color/transparent"

• 分割线外观修改

android:divider="#448ced"
android:dividerHeight="1px"

• 利用inset设置分割线外观

drawable/list_divider.xml

<inset xmlns:android="http://schemas.android.com/apk/res/android"
    android:insetLeft="10dp"
    android:insetRight="10dp" >

    <shape android:shape="rectangle" >
        <solid android:color="@color/list_divider_color" />
    </shape>

</inset>

in your layout:

<ListView
    android:id="@+id/listView1"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:cacheColorHint="#00000000"
    android:divider="@drawable/list_divider"
    android:dividerHeight="1dp" >
</ListView>