I am trying to launch my custom receiver application from the Chrome browser. The first step in doing so appears to add a receiver listener for the activity type I'm interested in:
cast_api = new cast.Api();
cast_api.addReceiverListener(activityType, onReceiverList);
What should activityType be? I am able to put "YouTube" and "Netflix" and get a list of connected receivers, but when I put my whitelisted App-Id I do not get a list of Chromecast receivers. Is this something wrong with my whitelisting (perhaps giving an incorrect device serial code), or is it an incorrect understanding of what activityType means in the Chrome API?