Design for a limitless screen
If you are used to designing for a smartphone, you might have organized the screens in your application in a hierarchy. Try to avoid this approach when you design applications for the BlackBerry PlayBook tablet. Instead of creating an application with a hierarchy that users have to navigate, create an application that has a flat structure. Think of the screen as a window into your application instead of a container for the entire application. For example, if the number of photo albums does not fit on the display area of the screen, show part of a photo album at the edge of the screen so that it is obvious to users that they can view more albums by swiping up or down on the screen.