I'm an engineer with more than 20 years of experience, much of it with Java. I've built systems as large as Amazon's massively scalable AutoScaling service and as small as a pre-Android OSS/Linux and Java based platform for cell-phones. I'm currently deep in Android.
The second edition of Programming Android is now available. We put a lot of work into revising it to address post-Honeycomb Android and the requests and comments we got from the 1st edition. It is even better. If you are a Moblie dev coming to Android/Java, or a Java dev coming to Android/Mobile, I think you'll love it!