Android Programming Books

• Hello, Android : introducing Google's mobile development platform by Ed Burnette http://www.amazon.com/Hello-Android-Introducing-Development-Programmers/dp/1934356565/ref=sr_1_1?ie=UTF8&s=books&qid=1298382259&sr=8-1

This is really a book covering all topics of the Android development including Widgets, 2D graphic, etc.