This is androidpatterns.com, a set of interaction patterns that can help you design Android apps. An interaction pattern is a short hand summary of a design solution that has proven to work more than once. Please be inspired: use them as a guide, not as a law.
H. Aras, and D. Huber. Intelligent Interactive Assistance and Mobile Multimedia Computing, volume 53 of Communications in Computer and Information Science, Springer Berlin Heidelberg, 10.1007/978-3-642-10263-9_3.(2009)