I want to transfer Injustice Gods Among Us saved game from ios ipad to my android I have been playing Injustice: Gods Among Us on my iOS on the iPad and now I have an Android phone and I want to tranfer the saved game to my Android, characters, challenges, cards, money... all of that.

Is there any way I can do it?.
I have downloaded the game already, I only need the data.
If the game is using a platform independent way of saving the game (eg. Facebook) then connecting the game to that account is enough and it should ask you to restore your save state like in Clash of clans or Boom beach.