Blackberry Smartphones Specifications download pdf (Page 55)

• In most cases, avoid providing more than seven panes of content. The more panes of content, the more difficult it becomes

for users to remember each pane. However, you can include more than seven panes if the panes are ordered in an obvious

way, such as by date, by number, or in an alphabetical list.

• Add hint text to the left side and the right side of the screen to indicate that other panes of content are available. Use arrows

instead of hint text if there is a large number of panes or to indicate that users can navigate in increments, such as by date.

• Allow users to scroll through the panes continuously if it is easy to distinguish the content in each pane. Otherwise, users

might get lost. If there are only two panes, do not allow users to scroll continuously through the panes.

• Create a start and end point for the panes if the titles in each pane are similar or if the content in each pane is similar. A

fixed start and end point allows users to easily find the first pane and the last pane. It also allows users to learn the order

of the titles.

• Avoid using icons in titles, except for branding purposes.

Guidelines for tab views

• Use a tab view to display related but different types of content in the same view. Use a tab view if the types of content are

not expected to increase in number.

• Show all tabs on the screen where possible. Avoid making users scroll to see additional tabs.

• Avoid displaying tabs with dramatically different widths. Try to distribute tabs evenly across the screen.

• If there is a limited amount of space at the top of each tab, use icons instead of labels.

UI Guidelines

Pane manager

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Blackberry Smartphones Specifications Page 55