At P2PU, people work together to learn a particular topic by completing tasks, assessing individual and group work, and providing constructive feedback.
This course will become read-only in the near future. Tell us at community.p2pu.org if that is a problem.
Android programming is an open source.Android apps are used frequently these days with the launch of android mobile phones and tables.Its cheaper in comparison to iphones and since it is open source it can be used without paying anything.
Its a good technology and can be learned by the users if they have a basic background of java.