title: How to instantiate a MediaDrm object
body: <p>I am using Nexus4 with Android 4.3, and I am try to use the new API <code>public MediaDrm (UUID uuid)</code>, but I only can got the following exception:<code>UnsupportedSchemeException</code>.</p>
  
  <p>The exception looks which arise from UUID is incorrect.</p>
  
  <p>I've tried to use the UUID which is converted from deviceId, from network MAC address or from token which is sent from DRM server. all of I mentioned is incorrect.</p>
  
  <p>Then is there anyone knows what is the correct way to get this UUID?</p>
  
  <p>More info are in below:</p>
  
  <p>Parameters:</p>
  
  <pre><code>uuid 
  </code></pre>
  
  <p>The UUID of the crypto scheme.</p>
  
  <p>Thanks in advance.</p>