BlackBerry device user input and navigation

BlackBerry® devices include a keyboard, a trackwheel, trackball, or trackpad, and an Escape key, for input and navigation. On BlackBerry devices with a SurePress™ touch screen, clicking the screen is equivalent to clicking the trackball or trackwheel.

A BlackBerry® Java® Application should use the following input and navigation model as closely as possible.

  • Clicking the trackwheel, trackball, trackpad, or touch screen typically invokes a menu.
  • Pressing the Escape key cancels actions or returns to the previous screen. Pressing the Escape key repeatedly returns users to the Home screen. Holding the Escape key closes the browser or media application.

By default, the BlackBerry screen objects provide this functionality without customization; however, you must add menu items and additional UI and navigation logic.

Next topic: Touch screen

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