title: Elevation property not working android
body: <p>Hi I am developing android application in which I am trying to implement new material design features. I tried to apply elevation property but it is not working for me. I tried it in following way.</p>
  
  <pre><code>&lt;RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
  xmlns:tools="http://schemas.android.com/tools"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:background="#FFFFFF"
  tools:context="com.example.androidmaterialsamples.MainActivity" &gt;
  &lt;ImageView 
      android:id="@+id/sampleImage"
      android:layout_height="wrap_content"
      android:layout_width="wrap_content"
      android:src="@drawable/ic_launcher"
      android:layout_centerInParent="true"
      android:elevation="10dp"/&gt;
   &lt;/RelativeLayout&gt;
  </code></pre>
  
  <p>It is not showing any shadow for that image. Am I doing anything wrong? Need some help. Thank you.</p>
  
  <p>I tried in this way as well but still no change in output.</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;shape xmlns:android="http://schemas.android.com/apk/res/android"
   android:shape="rectangle"&gt;
  &lt;solid android:color="#0073ff" /&gt;
  &lt;corners android:radius="16dp" /&gt;
  &lt;/shape&gt;
  
  &lt;RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
  xmlns:tools="http://schemas.android.com/tools"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:background="#FFFFFF"
  tools:context="com.example.androidmaterialsamples.MainActivity" &gt;
  &lt;TextView 
      android:id="@+id/sampleImage"
      android:layout_height="wrap_content"
      android:layout_width="wrap_content"
      android:text="my name is nilesh"
      android:padding="10dp"
      android:textSize="20sp"
      android:layout_centerInParent="true"
      android:elevation="12dp"
      android:background="@drawable/background"/&gt;
  &lt;/RelativeLayout&gt;
  </code></pre>