The Webkey Start Service Java Sample Code demonstrates how to connect to other Android applications by sending intents. An intent is an abstract description of an operation to be performed.
Facebook has recently announced the release of Graph API (v4.0) and Marketing API (v4.0). The changes to these APIs are highlighted by updates to webhooks, Business Asset Groups, and ad creation and editing. Ad Insights also gains new functionality that provides more granular insight into traffic.
Have you ever wondered why some popular sites do not provide an API but ship a great mobile application that works with their data? It is easy enough to conclude that beneath the layers of the mobile application, there are indeed API calls but just that the API is private and not yet made available. If you are itching to discover the APIs but did not know how to, help could be on the way.