blocks|key|49617|text|如果你有这行|type|unstyled|depth|inlineStyleRanges|entityRanges|data|49618|android:hardwareAccelerated="false"|code-block|syntax|javascript|49619|在清单应用程序标记中，未显示您的阴影。尝试删除此行|49620|或使用|49621|android:hardwareAccelerated="true"|49622|这对我很有效！我希望它也适用于您:)|49623|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|S|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|T|8|@]|9|@]|A|$]]|$1|K|3|L|5|D|7|U|8|@]|9|@]|A|$E|F]]|$1|M|3|N|5|6|7|V|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

If you have this line 

<pre><code>android:hardwareAccelerated="false"
</code></pre>

in manifest application tag your shadows were not displayed. try to remove this line

or use 

<pre><code>android:hardwareAccelerated="true"
</code></pre>

This worked for me! I hope it works for you too :)

blocks|key|49636|text|它解决了我的问题|type|unstyled|depth|inlineStyleRanges|entityRanges|data|49637|xmlns:card_view="http://schemas.android.com/apk/res-auto“|offset|length|49638|例如：|49639|<android.support.v7.widget.CardView
++++xmlns:android="http://schemas.android.com/apk/res/android"
++++xmlns:card_view="http://schemas.android.com/apk/res-auto"
++++android:layout_width="match_parent"
++++android:layout_height="wrap_content"
++++android:layout_marginTop="5dp"
++++android:layout_marginLeft="5dp"
++++android:layout_marginRight="5dp"
++++card_view:cardCornerRadius="5dp">|code-block|syntax|javascript|49640|entityMap|0|LINK|mutability|MUTABLE|url|http://schemas.android.com/apk/res-auto^0|0|H|13|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|V|8|@]|9|@$D|W|E|X|1|Y]]|A|$]]|$1|F|3|G|5|6|7|Z|8|@]|9|@]|A|$]]|$1|H|3|I|5|J|7|10|8|@]|9|@]|A|$K|L]]|$1|M|3|-4|5|6|7|11|8|@]|9|@]|A|$]]]|N|$O|$5|P|Q|R|A|$S|T]]]]

It solved me by adding 

xmlns:card_view="http://schemas.android.com/apk/res-auto"

for example:

<pre><code>&lt;android.support.v7.widget.CardView
 xmlns:android="http://schemas.android.com/apk/res/android"
 xmlns:card_view="http://schemas.android.com/apk/res-auto"
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:layout_marginTop="5dp"
 android:layout_marginLeft="5dp"
 android:layout_marginRight="5dp"
 card_view:cardCornerRadius="5dp"&gt;
</code></pre>

blocks|key|4556214|text|我在卡片视图上添加了一个app:cardElevation="8dp“属性，因此它将如下所示：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4556215|<android.support.v7.widget.CardView
++++++++android:layout_width="match_parent"
++++++++android:layout_height="160dp"
++++++++android:layout_marginStart="16dp"
++++++++android:layout_marginLeft="16dp"
++++++++android:layout_marginTop="24dp"
++++++++android:layout_marginEnd="16dp"
++++++++android:layout_marginRight="16dp"
++++++++app:cardElevation="8dp"
++++++++app:cardCornerRadius="8dp"
++++++++app:layout_constraintEnd_toEndOf="parent"
++++++++app:layout_constraintStart_toStartOf="parent"
++++++++app:layout_constraintTop_toBottomOf="@%2Bid/textView">

++++++++<ImageView
++++++++++++android:layout_width="wrap_content"
++++++++++++android:layout_height="wrap_content"
++++++++++++android:scaleType="centerCrop"
++++++++++++android:src="@drawable/kmp_warna1"+/>

++++</android.support.v7.widget.CardView>|code-block|syntax|javascript|4556216|希望能有所帮助|4556217|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

i am adding an app:cardElevation="8dp" attribute on card view, so it will be like :

<pre><code>&lt;android.support.v7.widget.CardView
 android:layout_width="match_parent"
 android:layout_height="160dp"
 android:layout_marginStart="16dp"
 android:layout_marginLeft="16dp"
 android:layout_marginTop="24dp"
 android:layout_marginEnd="16dp"
 android:layout_marginRight="16dp"
 app:cardElevation="8dp"
 app:cardCornerRadius="8dp"
 app:layout_constraintEnd_toEndOf="parent"
 app:layout_constraintStart_toStartOf="parent"
 app:layout_constraintTop_toBottomOf="@+id/textView"&gt;

 &lt;ImageView
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:scaleType="centerCrop"
 android:src="@drawable/kmp_warna1" /&gt;

 &lt;/android.support.v7.widget.CardView&gt;
</code></pre>

Hope it will help

blocks|key|4556233|text|在cardView中设置|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4556234|++++<android.support.v7.widget.CardView+
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="6dp"
card_view:cardUseCompatPadding="true"
card_view:cardElevation="4dp"
card_view:cardCornerRadius="3dp">|code-block|syntax|javascript|4556235|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

set in cardView
<pre><code> &lt;android.support.v7.widget.CardView 
xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot;
xmlns:card_view=&quot;http://schemas.android.com/apk/res-auto&quot;
android:layout_width=&quot;match_parent&quot;
android:layout_height=&quot;match_parent&quot;
android:layout_margin=&quot;6dp&quot;
card_view:cardUseCompatPadding=&quot;true&quot;
card_view:cardElevation=&quot;4dp&quot;
card_view:cardCornerRadius=&quot;3dp&quot;&gt;
</code></pre>

From what I understand, early in the preview stage there seemed to be no way to set elevation in XML only on <code>CardView</code>s without a hack in Java. Now that the official release is out, is there any way of doing this in XML without writing Java code to set elevation?

I have tried <code>card_view:cardElevation</code> to no effect. I had thought when I was using the emulators for 5.0 everything was fine. But now that I'm using the official version on my actual device all of my <code>CardView</code>s disappeared

Pre Lollipop, it works great. 

Here is my full xml

<pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
&lt;android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
 xmlns:card_view="http://schemas.android.com/apk/res-auto"
 android:orientation="horizontal"
 android:layout_width="match_parent"
 android:id="@+id/cv1"
 card_view:cardElevation="4dp"
 android:layout_margin="6dp"
 card_view:cardCornerRadius="3dp"
 android:layout_height="match_parent"&gt;
</code></pre>

Setting Elevation in XML on AppCompat CardView on Android 5.0

Java

据我所知，在预览阶段的早期，似乎没有办法在CardView上不使用Java语言在XML中设置elevation。既然官方发行版已经发布，有没有办法在XML中实现这一点，而无需编写Java代码来设置标高呢？我已经尝试了card_view:cardElevation，但没有效果。当我使用5.0版本的仿真器时，我认为一切都很...

问在Android5.0上的AppCompat CardView上设置XML中的Elevation
EN

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