This is where you'll find the API reference. Take a look at the descriptions of the libraries below to see which are appropriate for you.
BlackBerry Platform Services
The BlackBerry Platform Services library (BPS) provides an event-driven application model that you can use to interact with a number of different platform services on the PlayBook. These high-level wrappers allow you to access various sensors, handle orientation changes, use the virtual keyboard, and more!
Multimedia Developer's Guide
The Multimedia Developer's Guide shows you how to use the Multimedia Renderer to allow multimedia applications to request and control the playback of audio and video media. The library allows you to issue playback commands, retrieve current status, request notification updates, and read dynamic metadata from media.
This is the standard C library reference for creating Native SDK applications. Here is where you'll find basic C functions for performing low-level tasks in your applications, like manipulating strings, managing memory allocation, and performing math calculations.
The Image library allows you to load and render images using codecs supported by the Native SDK.
This library provides a framework that makes it easier to process gestures triggered by the user. Gestures are self-contained state machines that aggregate touch events to build up a movement such as pinch, rotate, or two finger pan.