How would we even know without the media telling us? I can certainly see such a thing happening given apple and google would be able to hire away each others engineers.
I didn't think so. Look, people rarely take entire products from one company to another.
They do often take their ideas and desires, though.
For example, Palm hired away a few Apple engineers to work on WebOS. No doubt they went to Palm partly because Palm let them implement their ideas like the multitasking card metaphor, which everyone else adopted later on.
NDA isn't flawless, hell we have companies suing each other now right?
The patent lawsuits are not about stealing. They're about who managed to spend money getting a patent for the same idea, first.
Engineers will find ways around it, have a slightly different way of building a certain component and you get Android, which would look nothing like it does now if it wasn't for iOS.
If so, that still has nothing to do with secrets. The devices and UIs are available to anyone to look at and get ideas from.
Non-engineers seem to have this bizarre idea that you need secret access in order to copy the look of something. No.
Now Eric Schmidt wasn't hired away by google. But I am pretty sure there is a reason jobs kicked him out of the board of directors.
It wasn't over any past stealing, otherwise Apple would've sued him.
On the contrary, Jobs issued a rare public praise of Schmidt when he left, and he never accused him of misusing any secret info.
Like many, you're obviously confused because Jobs said iOS was stolen _after_ it came out. He didn't mean code. He meant ideas like slide to unlock and pinch zoom, which he mistakenly seemed to believe were invented by Apple.