Drupal offers a large and extensible set of back-end services (via Services Module in D6 & D7 and via Core in D8), from Content to User to Views to Commerce, that can enrich your Android app, and increasingly they have a uniform set of APIs. This case study discusses how to use them efficiently and securely, including authenticating safely and with good user experience, and describes Android-specific app-level optimizations. This case study will also discuss our journey of building a native Android tablet only application. (Because this app is still under heavy development, therefore I will not provide a written description of the purpose and usage of this app.)

Below is the list of topics that I would like to discuss and share:

1. Content Modeling
2. Re-usability of Drupal (Node, Taxonomy, Organic Group, User, Internationalization, Drupal Commerce) for Mobile
3. Content Syncing strategy and offline usage
3. Internationalization
4. User management and Mobile Security
5. Mobile Commerce
6. Android dev specifics related to Drupal

(i18n menu)

One more screenshot: