Question

flex tree 添加子节点问题

做好了一个数据源 想在其中一个节点上添加一些子节点，这些节点存在Array中 当点开根节点的时候，就根据Array的内容添加节点。

大牛们 帮个忙吧 我没分了 谢谢你们了

Answer 1

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" minWidth="1024" minHeight="768" creationComplete="init();">
<mx:Script>
<![CDATA[
import mx.collections.ArrayCollection;
[Bandable]
private var arrData:ArrayCollection = new ArrayCollection([
{ label: "平原", data:1},
{ label: "丘陵", data:2},
{ label: "山地", data:3}]);
private var addData:ArrayCollection = new ArrayCollection([
{ label: "平原1", data:1},
{ label: "平原2", data:2},
{ label: "平原3", data:3}]);

private function init():void
{
tree.dataProvider = arrData;
}

private function clickHandler():void
{
if(tree.selectedIndex == 0)
{
for(var i:int = 0 ; i<arrData.length; i ++)
{
if(i == 0){
arrData[0].children = addData;
}
}
tree.dataProvider = arrData;
}
arrData.refresh();
}

]]>
</mx:Script>

<mx:Tree id="tree" change="clickHandler();" dataProvider="{arrData}" width="413" height="337"/>
</mx:Application>
这个是代码。自己编写测试过可以成功。

Answer 2

添加数据在数组的内,重绘Tree
var arr:Array = [{label:"hello word!"}];
tree.dataProvider = arr;

添加到数组后,重新设置dataProvider 属性