I'm looking through the chromecast api and trying to figure out whether I can cast an entire android app on to the screen, or only media within that app. Does anyone know the answer to this? I want to make sure if I build a cast app, that the entire app can be sent to a tv screen, not just media contained within it.
No, you cannot cast an entire Android app to the ChromeCast device. The mobile app and the ChromeCast app are two different apps. The app running on the ChromeCast device is HTML. The app on your mobile device can send commands to the app running on the ChromeCast device. These commands can be used to play media or for handling custom messages.