i am pretty picky about screens when it comes to colour reproduction, viewing angles, and so on, and i'll say the switch's was a pleasant surprise in my time with it. it's obviously not as good as something like an iphone 7 plus, and nowhere near as sharp as you'd expect from a modern phone or tablet, but it's a decent panel that doesn't get in the way of your games like the wii u's did.
still not convinced i'll want to play zelda on it, but i think it's the first time nintendo has shipped a screen of reasonable quality (for the time) since the game boy micro, or at least DS lite.
There's no remnants of Android on that UI as far as the ones shown are concerned.
And I doubt it was based on Android to begin with. Google would have said anything about it by now if so.
if it's based on android (which would not surprise me in the slightest), google absolutely
wouldn't say anything about it, because it'd be a fork of the AOSP open-source variant. the kind of android that google is interested in promoting is the kind where manufacturers are forced to include google services, not the AOSP stuff that amazon and chinese OEMs use as a leg-up essentially to create their own operating systems. this was necessary for android to take over the world, but it's not something that really works to google's advantage today.
there would pretty much be no reason for nintendo not to use AOSP in a similar way, considering the hardware inside the switch and the company's lack of experience with this kind of thing. AOSP is basically the default codebase for anyone wanting to build a platform atop ARM hardware these days — it doesn't have to have anything to do with "android".