mxml:
1 <?xml version="1.0" encoding="utf-8"?> 2 <!--功能描述: 利用firstVisibleItem属性,设置或取得第一个显示节点 --> 3 <s:Application xmlns:fx="http://ns.adobe.com/mxml/2009" 4 xmlns:s="library://ns.adobe.com/flex/spark" 5 xmlns:mx="library://ns.adobe.com/flex/mx" minWidth="955" minHeight="600"> 6 <fx:Script> 7 <![CDATA[ 8 import mx.events.FlexEvent; 9 10 import spark.events.IndexChangeEvent; 11 12 protected function comboBox_changeHandler(event:IndexChangeEvent):void 13 { 14 tree.firstVisibleItem = comboBox.selectedItem; 15 } 16 17 protected function tree_creationCompleteHandler(event:FlexEvent):void 18 { 19 tree.expandChildrenOf(data, true); 20 } 21 22 ]]> 23 </fx:Script> 24 <fx:Declarations> 25 <!-- 将非可视元素(例如服务、值对象)放在此处 --> 26 27 <fx:XML id="data" xmlns=""> 28 <data> 29 <item label="周星驰"> 30 <item label="1988"> 31 <item label="《霹雳先锋》香港票房8916612 " /> 32 <item label="《捕风汉子》香港票房3149395 " /> 33 <item label="《最佳女婿》香港票房5807710 " /> 34 </item> 35 <item label="1989"> 36 <item label="《龙在天涯》香港票房6809853 " /> 37 <item label="《义胆群英》香港票房7913329 " /> 38 <item label="《流氓差婆》香港票房5624622 " /> 39 <item label="《风雨同路》香港票房9335299 " /> 40 </item> 41 <item label="1990 "> 42 <item label="《望夫成龙》香港票房13703364 " /> 43 <item label="《咖喱辣椒》香港票房15777856 " /> 44 <item label="《小偷阿星》香港票房7968106 " /> 45 <item label="《师兄撞鬼》香港票房12128944 " /> 46 <item label="《赌圣》香港票房41326156 " /> 47 <item label="《无敌幸运星》香港票房18799869" /> 48 <item label="《江湖最后一个大佬》香港票房5495811 " /> 49 </item> 50 </item> 51 <item label="李连杰"> 52 <item label="1992"> 53 <item label="笑傲江湖之东方不败(1992)" /> 54 <item label="黄飞鸿之二男儿当自强(1992)" /> 55 <item label="黄飞鸿之三狮王争霸(1992)" /> 56 </item> 57 <item label="1993"> 58 <item label="方世玉Ⅱ万夫莫敌(1993)" /> 59 <item label="倚天屠龙记之魔教教主(1993)" /> 60 <item label="黄飞鸿之铁鸡斗蜈蚣(1993)" /> 61 <item label="太极张三丰(1993)" /> 62 </item> 63 <item label="1994"> 64 <item label="新少林五祖(1994)" /> 65 <item label="精武英雄(1994)" /> 66 <item label="中南海保镖(1994) " /> 67 <item label="给爸爸的信(1995" /> 68 </item> 69 <item label="1995"> 70 <item label="鼠胆龙威(1995)" /> 71 <item label="给爸爸的信(1995" /> 72 </item> 73 </item> 74 </data> 75 </fx:XML> 76 77 <s:XMLListCollection id="xml" source="{data..item}" > 78 79 </s:XMLListCollection> 80 </fx:Declarations> 81 82 <s:controlBarContent> 83 <s:Form styleName="plain"> 84 <s:FormItem label="firstVisibleItem"> 85 <s:ComboBox id="comboBox" dataProvider="{xml}" labelField="@label" width="300" change="comboBox_changeHandler(event)" /> 86 </s:FormItem> 87 </s:Form> 88 </s:controlBarContent> 89 <mx:Tree id="tree" dataProvider="{data}" labelField="@label" showRoot="false" width="50%" alternatingItemColors="[0xeeeeee,0xffffff]" rowCount="6" creationComplete="tree_creationCompleteHandler(event)"> 90 91 </mx:Tree> 92 </s:Application>