Ask HN: Good Android UI Design Tools?

Hello, a group of friends and I have been working on an app for a Software Engineering class for about a month or two and we are close of being finished. We are not graded on the UI, just the functionality and over all OO Design of our code. However, I just wanted to do how would I go about making a pretty UI, do most people just do it using the xml and pre-built Android UI functions?

So far all of our pages just use all the Android built in tools and we have just been writing xmls since the UI design tools for Android that are built into Eclipse are pretty bad. I was wondering if anyone has any links on maybe tutorials or some tools that can make designing a nice and pretty UI? So far most tutorial I have found just make the same kind of pages we have made for our app. I have seen how the iOS UI design tools look like and they look like heaven compared to what Eclipse + ADK offers.

Any insight from Android developers would be greatly appreciated