• Allow users to easily move from one item to another by swiping across the trackpad. For example, allow users to see the
next or previous picture in a collection of pictures.
On BlackBerry devices with a touch screen and a trackpad, consider the following best practices:
• Allow movement between touch screen and trackpad interactions to flow seamlessly during a task.
• Consider allowing touch screen and trackpad interactions to complement each other. For example, users can scroll to
find content using the touch screen and then use the trackpad to move the cursor to highlight a specific sentence.
• Allow combined touch screen and trackpad interactions, where appropriate. For example, in a game, when users move
over an object using a finger on the touch screen, they can click the trackpad to shoot the object.
Touch screen
On BlackBerry devices with a touch screen, users can navigate and type text using the capacitive touch screen.
In most cases, an action occurs when users lift their finger off the touch screen, not when they touch the screen. However,
when users touch an item or touch and hold a finger on an item, the action occurs before users lift their finger.
Users can perform the following actions on a touch screen:
User action Result
Tap the screen. This action initiates an action. For example, when users tap an email
message in the message list, the message opens. In most cases, this
action is equivalent to clicking the trackpad.
Tap the screen twice quickly in the same location. This action fits the content in a picture, HTML email message,
webpage, or attachment into the dimensions of the screen.
Touch an item. This action highlights an item.
On a toolbar or the virtual keyboard, this action displays a tooltip.
Touch and hold a finger on an item. If a pop-up menu is available, this action opens the pop-up menu.
Drag a finger vertically. This action scrolls and moves the content on the screen. For
example, on the Home screen, users can move the rows of
applications up or down to display the preferred number of
applications on the screen.
Drag a finger in any direction. This action pans a picture, map, or web page.
Touch the screen in two locations at the same
time.
This action highlights text or a list of items, such as messages,
between the two locations.
Swipe across the screen. This action moves the content on the screen quickly in the direction
of the swipe.
UI Guidelines Interactions
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