Please see the resources listed for Lecture 5 for building a cloud backend.
For the Android code:
- Introduction to the Volley library. Note in particular the dependency you need to add to build.gradle if you intend to use the library.
- How to send a simple request.
- The AndroidHomePhone project we developed in class. This application should be very useful to you, as it contains code for doing GET and POST to the cloud, reading back the results.