While you may have used the I/O 2014 app to plan your schedule at the conference, Google had bigger plans for the app. It’s designed to serve as a kind of template for other Android apps.
Google describes a number of features, APIs and design approaches that went into the app: “Fragments, Loaders, Services, Broadcast Receivers, alarms, notifications, SQLite databases, Content Providers, Action Bar, the Navigation Drawer, the Google Drive API, Google Cloud Messaging,material design, the Android L Preview APIs and Android Wear integration.”
The company rebuilt the app to work with JSON files instead of a specific API so that it can be easily repurposed for other conferences.
In the future, Google plans to publish technical articles related to the source code, and it will update the app over the next few months.