No, but did it also use java translation? That would involve writing wrappers for many of the native libraries. They would also have to do View/Controllers in objective-c (or some equivalent translator). And finally, they would have to special-case operating systems everywhere. This framework would not at all suffice to do multi-platform development; xamarin, robovm, cordova, and titanium all get much closer to this goal.
Google's new Inbox by Gmail was delivered on three platforms simultaneously. It was not written from scratch 3 times.