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Tree views

Use a tree view to display objects, such as folders, in a hierarchical manner.

Objects in the tree view are nodes. The highest node is the root node. A node in the tree can have child nodes under it. A node that has a child is a parent node.

Users can perform the following action in a tree view:


BlackBerry devices with a trackpad only

BlackBerry devices with a touch screen and a trackpad

Expand or collapse an object with a plus sign (+) or minus sign (-) in a hierarchy.

Press the Space key or click the trackpad.

  • Tap the object.
  • Press the Space key.
  • Click the trackpad.
This screen shows an example of a tree view.
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