title: How to add shadow around circular imageview
body: <p>I want to add shadow around circular imageView.
  Here is my code.
  I want to make like this image
  <a href="https://i.stack.imgur.com/aNLrT.png" rel="noreferrer"><img src="https://i.stack.imgur.com/aNLrT.png" alt="image"></a></p>
  
  <p>This is my .xml file
  check this image. 
  <a href="https://i.stack.imgur.com/qt7p3.jpg" rel="noreferrer"><img src="https://i.stack.imgur.com/qt7p3.jpg" alt="screenshot1"></a></p>
  
  <p>activity_main.xml</p>
  
  <pre><code>&lt;RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="match_parent"
  android:layout_height="match_parent" &gt;
  
  &lt;RelativeLayout
      android:id="@+id/layoutTop"
      android:layout_width="match_parent"
      android:layout_height="200dp"
      android:background="#355482" &gt;
  &lt;/RelativeLayout&gt;
  
  &lt;RelativeLayout
      android:id="@+id/layoutBottom"
      android:layout_width="match_parent"
      android:layout_height="0dp"
      android:layout_alignParentBottom="true"
      android:layout_below="@+id/layoutTop"
      android:background="@drawable/loading" &gt;
  
      &lt;TextView
          android:id="@+id/textView1"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_alignParentTop="true"
          android:layout_centerHorizontal="true"
          android:layout_marginTop="113dp"
          android:text="Profile"
          android:textColor="#355482"
          android:textSize="20dp"
          android:textStyle="bold" /&gt;
  &lt;/RelativeLayout&gt;
  
  &lt;ImageView
      android:id="@+id/overlapImage"
      android:layout_width="150dp"
      android:layout_height="150dp"
      android:layout_alignParentTop="true"
      android:layout_centerHorizontal="true"
      android:layout_marginTop="132dp"
      android:adjustViewBounds="true"
      android:background="@drawable/round_image"
      android:src="@drawable/ic_launcher" /&gt;
  </code></pre>
  
  <p>
  this is round_image.xml:</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="oval"&gt;
  
  &lt;solid android:color="#ffffff" /&gt;
  &lt;corners android:radius="2dp"/&gt;
  
  &lt;size
      android:height="80dp"
      android:width="80dp" /&gt;
  
  &lt;padding
      android:bottom="0dp"
      android:left="0dp"
      android:right="0dp"
      android:top="0dp" /&gt;
  
  &lt;/shape&gt;
  </code></pre>
  
  <p>I try some code for shadow effect but it's not working.</p>