title: Not getting Ripple effect on Android Lollipop CardView
body: <p>I'm trying to get the ripple effect in card view, I implemented it by adding the android:background attribute as described in the Android Developers page <a href="https://developer.android.com/training/material/animations.html" rel="nofollow noreferrer">https://developer.android.com/training/material/animations.html</a> but I did not get the ripple effect, then I changed the attribute to android:foreground as given in <a href="https://stackoverflow.com/a/26975714/6866139">https://stackoverflow.com/a/26975714/6866139</a> still I am not getting the ripple effect here is my XML code</p>
  
  <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:layout_width="match_parent"
          android:layout_height="wrap_content"
          card_view:cardBackgroundColor="@color/cardview_light_background"
          card_view:cardElevation="3dp"
          android:focusable="true"
          android:focusableInTouchMode="true"
          android:id="@+id/card_view"
          android:clickable="true"
          android:background="?android:attr/selectableItemBackground"
          android:layout_margin="@dimen/password_list_item_card_view_layout_margin"&gt;
  
  
              &lt;LinearLayout
                  android:orientation="horizontal"
                  android:layout_width="match_parent"
                  android:layout_height="70dp"&gt;
  
                  &lt;TextView
                      android:layout_width="48dp"
                      android:layout_height="48dp"
                      android:id="@+id/logo_text_holder"
                      android:layout_marginTop="12dp"
                      android:layout_marginStart="12dp"
                      android:textColor="@color/colorPrimaryDark"
                      android:background="@drawable/circle"
                      android:paddingTop="8dp"
                      android:textSize="24sp"
                      android:textAlignment="center" /&gt;
  
                  &lt;LinearLayout
                      android:orientation="vertical"
                      android:layout_width="match_parent"
                      android:layout_height="match_parent"
                      android:layout_marginStart="16dp"
                      android:layout_marginTop="8dp"&gt;
  
                      &lt;TextView
                          android:layout_width="match_parent"
                          android:layout_height="wrap_content"
                          android:id="@+id/name_holder"
                          android:textColor="@color/colorPrimaryDark"
                          android:textSize="24sp" /&gt;
  
                      &lt;TextView
                          android:layout_width="match_parent"
                          android:layout_height="wrap_content"
                          android:id="@+id/email_holder"
                          android:textColor="@color/colorPrimaryDark"
                          android:textSize="14sp"/&gt;
                  &lt;/LinearLayout&gt;
              &lt;/LinearLayout&gt;
      &lt;/android.support.v7.widget.CardView&gt; 
  </code></pre>
  
  <p>Is there any way to implement it, please help me
  Thanks in Advance</p>