Android 10  |  10.0.0_r6
Xml文件  |  6行  |  213 B 

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <style name="CardView" parent="Base.CardView">
        <item name="cardBackgroundColor">?android:attr/colorBackgroundFloating</item>
    </style>
</resources>