Anyone know of any good Android or Mobile app development books? I'm just starting to brush up on Java and made a small app yesterday, and am thinking about pursuing this a bit. The Java books I have are extremely old, and while there's tons of resources online...I like to have a physical reference book.
I know I could search Amazon, but was wondering if anybody had any experience with anything.
Edit: My Java skill is very beginners. However, being proficient in other languages...I should be extremely comfortable in about a week at the rate I'm going right now.