title: Ripple effect for lollipop views
body: <p>I have been developing an app for Lollipop (API 21). </p>
  
  <p>When I change the <code>Button</code> color to something, the ripple effect doesn't works. </p>
  
  <p>I found some third party libraries for the ripple effect, but I want to do this with standard API. </p>
  
  <p>This <a href="https://stackoverflow.com/questions/24607339/lollipop-rippledrawable-vs-selector-for-pre-lollipop">answer</a> didn't help either.</p>
  
  <p>XML:</p>
  
  <pre><code>&lt;Button
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:text="New Button"
      android:id="@+id/button"
      android:layout_below="@+id/textView"
      android:background="@android:color/holo_blue_bright"
      android:layout_alignParentStart="true"
      android:layout_marginTop="76dp"
     /&gt;
  </code></pre>