I don't know of any books, but I wrote a 2d game in Java which I lifted from download from the Java Boutique website. At least in 2001 there were tons of games and you could download the source code.

There are plenty of ways to create a game for Android and one important way is to do it from scratch in Android Studio with Java. This gives you the maximum control over how you want your game to look ...

I occasionally need to convert the background color of a particular image to be transparent so that the image looks better on medium with backgrounds of colors other than the image’s original ...