It’ll never happen. Google wouldn’t give a monkey’s but Apple would. And I don’t know that I’d want it to happen anyway: it wouldn’t be much of a step from that to having every phone run the same software and then where would we be? I don’t like using Android phones but there’s no question that iPhone has benefited from there being competition. Though plainly Android took nothing from iPhone, nooooooooo.
Still, it could happen in theory – because it is happening today, it is just now just about possible to run an iPhone app on an Android phone:
…six Columbia University students have bridged the gap between the two platforms with something called Cider (via The Next Web). Not to be confused with the other Cider software (for OS X), the Android version of Cider essentially fools iOS applications into believing they’re running on an actual iPhone or iPad.
There’s work and there’s work. You would never use this in real life. And I have serious questions about the smartness of university students who don’t know the difference between portrait and landscape: have a look at their video about all this.