Blackberry PlayBook Tablet Ui Manuallines - Página 19

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Blackberry PlayBook Tablet Ui Manuallines
UI Guidelines
You can use the same approach with progress information. For example, when a user downloads an application, your
application can display the progress information in the current context. This approach allows users to complete other tasks
while the action is in progress.
Best practices
•
Use dialog boxes sparingly. Restrict dialog boxes to the following situations:
•
To inform users of urgent information or the status of important actions
•
To warn users of unexpected conditions or situations where there is the possibility of data loss
•
To present users with multiple options for choice or disambiguation
•
When a user action is required for your application to proceed
•
Use an implicit save model where possible. For example, when setting options, apply each setting as the user changes
it. Some exceptions exist. For example, if a user chooses to close a document that is being edited, you can use a dialog
box to prompt the user to save changes.

Notifications and indicators

Application notification icons appear in the top-left corner of the home screen. These notifications inform users about
application-specific events, such as a new email. You can trigger an application notification when a new event or new
information is available that users might want to know about.
Status indicators appear in the top-right corner of the screen. These indicators display status information that applies
across applications, such as battery power level and wireless connection.
Screen design
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