Displaying information on a screen temporarily

You can display information on a screen temporarily using a transparent overlay or an opaque overlay. For example, when users view an image, you can display a description of the image along the top or bottom of the screen. You can define the amount of time that the information appears on a screen.

Action

BlackBerry devices with a trackpad only

BlackBerry devices with a touch screen and a trackpad

Display information temporarily.

  • Move a finger on the trackpad.
  • Press a key.
  • Touch the screen.
  • Move a finger on the trackpad.
  • Press a key.
Figure 1. Before information displays on a screen temporarily
This screen shows an example of a wireless service provider therme.
Figure 2. When information displays on a screen temporarily
This screen shows an example of information that appears on a screen temporarily.

Best practice: Displaying information on a screen temporarily

  • Avoid displaying information or components that users require to complete a task. Display only secondary information, such as descriptions or metadata, on a screen temporarily.
  • To avoid distracting users from their primary task, display temporary information judiciously.
  • Use the EyelidFieldManager class to display information temporarily. For more information about displaying information temporarily, see the API reference guide for the BlackBerry® Java® SDK and the BlackBerry Java Application UI and Navigation Development Guide.

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