I'm trying to find a solution to this, but can't, so I'll ask the pros.
I'd like to use my android tablet to teach. But I need to be able to send a specific application to the external screen all the time (ezpdfReader), while at the same time, being able to open other applications on the tablet without letting the students see those applications on the big screen. For example, if I use geddit and they see my screen, their privacy is busted.
Another example: one decides to play a video on the external screen, and would like to check an email on the tablet without disturbing the movie that's being played.
So basically I need a way to broadcast through hdmi only a single app, in full screen, while having the tablet free for other stuff. The broadcast of the specific app should run in the background, and be raised back when needed.
Is there a way to do this? An app, perhaps? Paid solutions are welcome.
If it's of any help, I'm using a samsung galaxy note 2014 edition.