如何使相对布局看起来像 CardView

How to make Relative layout look like CardView

我有太多的相对布局,我想把它转换成这样 card.How 我可以制作看起来像的可绘制对象 Card.I 想把它变成像一行一样的矩形。

试试这个:

     <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:paddingLeft="15dp"
        android:paddingTop="15dp"
        android:paddingBottom="15dp"
        android:paddingRight="15dp"
        android:background="@drawable/card_background"
        android:descendantFocusability="afterDescendants" />

创建一个名为 card_background.xml:

的可绘制对象
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item>
        <shape android:shape="rectangle">
            <solid android:color="#CABBBBBB" />
            <corners android:radius="2dp" />
        </shape>
    </item>

    <item
        android:bottom="2dp"
        android:left="2dp"
        android:right="2dp"
        android:top="2dp">
        <shape android:shape="rectangle">
            <solid android:color="@android:color/white" />
            <corners android:radius="2dp" />
        </shape>
    </item>
</layer-list>

为相对布局添加背景:

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item>
    <shape android:shape="rectangle">
        <solid android:color="#CABBBBBB" />
        <corners android:radius="2px" />
    </shape>
</item>

<item
    android:bottom="2dp">
    <shape android:shape="rectangle">
        <solid android:color="@android:color/grey" />
        <corners android:radius="2px" />
    </shape>
</item>