Books related to Android middleware development
<p>Everywhere I can find tons of books related to Android Application development - but I am really surprised that I have not been able to find a book which deals with middleware development. For example - I would really like to know how is the Multimedia Framework or RIL implemented or how does the Android Binder works. </p>

<p>I want to modify something in the middleware but sadly I can't find any comprehensive material on the same for example - add a service which interacts with the Multimedia Service. Yes there are articles on the web dealing with individual topics in some detail but no books covering anything below the Application Framework. </p>

<p>I can do this through Code browsing but it takes a lot of time just to gain a basic understanding. </p>

<p>Is there any link/book where this is covered in some details? </p>
