sheishuoAPP/uikit/res-ptr2/drawable-v21/touch_bg.xml

<?xml version="1.0" encoding="utf-8"?>
<ripple xmlns:android="http://schemas.android.com/apk/res/android"
        android:color="@color/item_hover">
    <item
        android:id="@android:id/mask"
        android:drawable="@android:color/white"/>
    <item>
        <shape android:shape="rectangle">
            <solid android:color="@color/transparent"/>
        </shape>
    </item>
</ripple>