tree - Flex 4.5 树组件

Question

• 如何在树头和第一个节点之间添加垂直距离？
• 选择该节点时如何设置节点标签的背景颜色。

Answer 1

I don't believe there is an easy way to add vertical distance between tree header and first node. It would be possible through making a customer TreeItemRenderer and just adding a gap at the top.

To change the background color of a node when it is selected you can use

myTree.setStyle( "selectionColor", 0x0000FF );

or declared in the mxml as a property of the control

<mx:Tree selectionColor="0x0000FF" />