Blackberry PlayBook Tablet Ui Manuallines - Página 30

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UI Guidelines

If you want to show that your application is working but you cannot determine the duration of the action, use an activity

indicator.

Best practices

•

Always indicate progress when an action takes more than 2 seconds to complete.

•

Provide useful progress information. For example, if users are downloading an application, indicate the percentage of

data that has been downloaded. Be as accurate as possible with the progress information.

•

For progress indicators, use concise, descriptive text to indicate what the action is (for example, "Loading data" or

"Building an application list"). If an action takes a long time and you want to communicate what is happening at each

stage, provide text that describes each stage (for example, "Downloading" or "Installing").

UI components