title: How to find out which App is running on the Chromecast receiver?
body: <p>In my Android Sender Application, I would like to display the status of a newly discovered Chromecast device. For e.g if another app lets say Youtube is currently casting to this device, then I would like to put a status as "casting Youtube" next to the device name in my receiver list.</p>
  
  <p>For this, once I discover a media route, I connect to that device. On getting a ConnectionCallbacks.onConnected() event, I try to retrieve the application metadata using  Cast.CastApi.getApplicationMetadata(GoogleApiClient). But I'm getting a null value here. When I run my Sender App, I make sure that I'm casting to the same Chromecast receiver from another app like Youtube. So I expect the application metadata to reflect Youtube app details its like appId, name etc. Is there a different way to achieve this?</p>