Facebook, the world’s largest social network released its first official SDK for Android. Demoed at Google I/O in San Francisco last week, the release is set to offer developers on Android a convenient means to link their Android native apps to Facebook Platform. Over 400 million people use Facebook, close to 100 million on their mobile phones alone and Android is one of the top mobile platforms used today. Prior to this, developers had to engineer interface solutions through the existing iPhone SDK.

Facebook’s Steven Soneff has said that there were ways to integrate Facebook into Android applications before. However, these had been hacked together from the iPhone SDK, and they weren’t officially supported by Facebook.

Facebook SDK for Android will make it easy to create Facebook tie-ins across applications. It will use OAuth 2.0 for authentication. Users can publish stories to Facebook using Feed forms too. The SDK is believed to be more advanced when compared to the iPhone SDK (which was launched over a year ago) due to the presence of Facebook’s Graph API. The open sourcing tools and example code hopes to simplify integration of Facebook Platform into applications of thousands of Android developers.