title: CardView inside GridView with clicking effect
body: <p>I have the following Custom GridView:</p>
  
  <pre><code>&lt;android.support.v7.widget.CardView
  android:layout_height="wrap_content"
  android:layout_width="wrap_content"
  app:cardCornerRadius="2dp"
  xmlns:android="http://schemas.android.com/apk/res/android"
  xmlns:app="http://schemas.android.com/apk/res-auto"&gt;
  
    &lt;LinearLayout
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      android:orientation="vertical"
      android:padding="5dp"&gt;
  
      &lt;ImageView
          android:id="@+id/grid_image"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_gravity="center_horizontal"
          android:layout_weight="4"/&gt;
      &lt;TextView
          android:id="@+id/grid_text"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_gravity="center_horizontal"/&gt;
    &lt;/LinearLayout&gt;
  &lt;/android.support.v7.widget.CardView&gt;
  </code></pre>
  
  <p>Now I have a GridView with CardView style but when I click on any item there's no clicking effect (I would like to have the cicle clicking effect of android 5.0 or at least any effect of clicking!) and I really don't know how to archieve this. Any help would be appreciated!</p>
  
  <p>Cheers.</p>