I think you can reference the views as well provided you have the same. I think it gets tricky (impossible) when it's gets to the hardware. I had project a while back where I did an Android version first and then iOS. Only had to do some minimal changes to get it to work 99% identical on both platforms. Alas the $99/year fee and the rigmarole app deployment killed it off for me for iOS but, you'll probably find it alot easier from iOS to Android.