The official 7digital Android SDK affords to integrate music charts, metadata, streams, and purchases into an Android application. 7digital is a service that offers over 30 million music tracks with curated recommendations. What author Ling Khor created to demonstrate how his project works, was the 7digital Android Buy Button. This sample allows users to buy a track without leaving the app. This is the project: https://github.com/7digital/7digital-android-buy-button-demo
Full API documentation available at: http://7digital.github.io/7digital-Android-SDK/apidocs/
Twilio has introduced two new APIs for enabling multi-user augmented reality (AR) applications; the DataTrack API and the Media Sync API. The APIs allow developers to build apps that provide a more immersive environment for users and an AR experience that immediately reacts to changes.