title: How to put a CardView attribute in a style?
body: <p>I have:</p>
  
  <p>in a file <code>build.gradle</code> (dependencies)</p>
  
  <pre><code>dependencies {
      compile 'com.android.support:cardview-v7:21.0.+'
  }
  </code></pre>
  
  <p>in a file <code>styles.xml</code> (styles definition)</p>
  
  <pre><code>&lt;resources
      xmlns:android="http://schemas.android.com/apk/res/android"
      xmlns:card_view="http://schemas.android.com/apk/res-auto"&gt;
  
      &lt;style name="CardViewStyle"&gt;
          &lt;item name="android:layout_margin"&gt;5dip&lt;/item&gt;
          &lt;item name="card_view:cardCornerRadius"&gt;4dp&lt;/item&gt;
          &lt;item name="card_view:cardElevation"&gt;4dp&lt;/item&gt;
      &lt;/style&gt;
  &lt;/resources&gt;
  </code></pre>
  
  <p>But compiler complains:</p>
  
  <p><strong>Error: No resource found that matches the given name: attr 'card_view:cardCornerRadius'.</strong></p>
  
  <p>How do I add some cardView attributes in a style?</p>