How do I prevent apps from blocking a second screen?

Question

I used Google cast to cast my phone's screen. That worked. But all4, the Channel 4 catch-up app, wouldn't display on the second screen. A message popped up saying "all 4 doesn't work on secondary screens". How can i stop the app from detecting this? I'm rooted and xposed, s5 touchwiz lollipop

Answer 1

Try xPrivacy.

You might be able to limit the permissions of the all4 application you mentioned in such a way that it cannot tell if Google cast is running.

The Github page has the full options on what is available.