这是主要的应用程序文件
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" creationComplete="initList()">
<mx:Script>
<![CDATA[
import mx.managers.PopUpManager;
import mx.messaging.channels.StreamingAMFChannel;
import mx.events.ListEvent;
import mx.collections.ArrayCollection;
import mx.rpc.events.ResultEvent;
import mx.collections.XMLListCollection;
import mx.controls.Alert;
[Bindable]
public static var tList:XML;
private function initList():void{
tree_List.send();
}
private function onResultList(event:ResultEvent):void{
tList = new XML(event.result);
}
private function addTreeNode():void{
var cNode:CreateNode = new CreateNode();
PopUpManager.addPopUp(cNode,this,true);
}
private function addItem():void{
if(treeComp.selectedItem == null){
}
else{
if(XML(treeComp.selectedItem).@first=="true")
XML(treeComp.selectedItem).appendChild("<item state='unchecked' isBranch='false' label='New Label' first='true'/>");
else
XML(treeComp.selectedItem).appendChild("<item state='unchecked' isBranch='false' label='New Label' first='false'/>");
}
}
public function remTreeNode():void {
treeComp.dataDescriptor.removeChildAt(XML(treeComp.selectedItem).parent(),XML(treeComp.selectedItem),XML(treeComp.selectedItem).childIndex())
}
private function saveTreeNode():void{
Alert.show(tList);
}
protected function treeComp_dblClickHandler(event:ListEvent):void
{
Tree( event.target ).editedItemPosition = {columnIndex: 0, rowIndex: event.rowIndex };
}
protected function treeComp_itmEditBegHandler(event:ListEvent):void
{
event.preventDefault();
}
]]>
</mx:Script>
<mx:HTTPService
id="tree_List"
resultFormat="xml"
result="onResultList(event)"
showBusyCursor="true"
method="POST"
url="Tree/List.xml"
useProxy="false"
/>
<mx:Canvas id="canMain" width="340" height="100%" minWidth="100">
<mx:Tree id="treeComp" itemRenderer="CheckTreeRenderer" toolTip="For deselection press ctl and click"
labelField="@label"
showRoot="false"
width="340"
height="{canMain.height - treeComp.y - 2}"
dataProvider="{tList}"
editable="true"
doubleClickEnabled="true"
itemDoubleClick="treeComp_dblClickHandler(event)"
itemEditBeginning="treeComp_itmEditBegHandler(event)"
folderOpenIcon="{null}"
folderClosedIcon="{null}"
defaultLeafIcon="{null}"
/>
</mx:Canvas>
</mx:Application>
这里是ItemRenderer文件
package
{
import flash.events.MouseEvent;
import flash.xml.*;
import mx.collections.*;
import mx.controls.CheckBox;
import mx.controls.Image;
import mx.controls.RadioButton;
import mx.controls.Tree;
import mx.controls.listClasses.*;
import mx.controls.treeClasses.*;
import mx.controls.RadioButtonGroup;
public class CheckTreeRenderer extends TreeItemRenderer
{
protected var myImage:Image;
// set image properties
private var imageWidth:Number = 6;
private var imageHeight:Number = 6;
private var inner:String = "inner.png";
protected var myCheckBox:CheckBox;
public var RadioBtnGR:RadioButtonGroup
protected var myRadio:RadioButton;
static private var STATE_SCHRODINGER:String = "schrodinger";
static private var STATE_CHECKED:String = "checked";
static private var STATE_UNCHECKED:String = "unchecked";
public var itemXml:XML;
public function CheckTreeRenderer ()
{
super();
mouseEnabled = false;
}
override protected function createChildren():void
{
super.createChildren();
myCheckBox = new CheckBox();
myCheckBox.setStyle("verticalAlign", "middle");
addChild(myCheckBox);
myRadio = new RadioButton();
//RadioBtnGR = new RadioButtonGroup();
//RadioBtnGR =
//myRadio.group = RadioBtnGR
myRadio.setStyle("verticalAlign", "middle");
addChild(myRadio);
}
override public function set data(value:Object):void
{
super.data = value;
/* if(value != null){
this.itemXml = XML(value);
if(this.itemXml.@check == true ){
this.myRadio.selected = true;
}else{
this.myRadio.selected = false;
}
}*/
}
override protected function updateDisplayList(unscaledWidth:Number, unscaledHeight:Number):void{
super.updateDisplayList(unscaledWidth,unscaledHeight);
if(super.data){
var tld:TreeListData = TreeListData(super.listData);
if(tld.hasChildren){
this.myCheckBox.visible = false;
this.myRadio.visible = true;
//this.myRadio.groupName = data.@label
}else{
/* You HAVE to have the else case to set visible to true even though you'd think
the default would be visible it's an issue with itemrenderers... */
this.myCheckBox.visible = true;
this.myRadio.visible = false;
}
if(data.@first == "true"){
myRadio.visible = false;
myCheckBox.visible = true;
}
else{
//this.myRadio.groupName = data.@label
//addChild(myRadio);
myRadio.visible = true;
myCheckBox.visible = false;
}
if(data.@isBranch =="true" ){
myRadio.visible = false;
myCheckBox.visible = false;
}
if(myCheckBox.visible || myRadio.visible){
//if the checkbox is visible then reposition the controls to make room for checkbox
this.myCheckBox.x = super.label.x
this.myCheckBox.y = super.label.y + 10;
this.myRadio.x = super.label.x ;
this.myRadio.y = super.label.y + 10;
super.label.x = this.myRadio.x + 15;
}
}
}
}
}
这是用于访问数据的xml文件
<list>
<group state="unchecked" isBranch="true" label="Grains" first="true">
<item state="unchecked" isBranch="false" label="White Bread" first="true"/>
<item state="unchecked" isBranch="false" label="Wheat Bread" first="true"/>
<item state="unchecked" isBranch="false" label="Pasta Bread" first="true" />
<item state="unchecked" isBranch="false" label="Oatmeal Bread" first="true"/>
</group>
<group id="itm1" state="unchecked" isBranch="true" label="Dairy" first="false" >
<item state="unchecked" isBranch="false" label="Milk" first="false" check="true" parentid="itm1"/>
<item state="unchecked" isBranch="false" label="Cheese" first="false" check="false" parentid="itm1"/>
<item state="unchecked" isBranch="false" label="Yogurt" first="false" check="false" parentid="itm1"/>
</group>
<group state="unchecked" isBranch="true" label="Fruits" first="true">
<item state="unchecked" isBranch="false" label="Apple" first="true"/>
<item state="unchecked" isBranch="false" label="Banana" first="true"/>
<item state="unchecked" isBranch="false" label="Citrus" first="true"/>
</group>
<group id="itm2" state="unchecked" isBranch="true" label="Nuts" first="false">
<item state="unchecked" isBranch="false" label="Pecans" first="false" check="true" parentid="itm2"/>
<item state="unchecked" isBranch="false" label="Cashews" first="false" check="false" parentid="itm2"/>
<item state="unchecked" isBranch="false" label="Brazil Nuts" first="false" check="false" parentid="itm2"/>
<group state="unchecked" isBranch="false" label="Check" first="false" check="false" parentid="itm2">
<item state="unchecked" isBranch="false" label="Testnut" first="false" check="false" parentid="itm2"/>
</group>
</group>
</list>
问题是单选按钮单击在树中显示一次，例如。假设我们在树中有两个节点，这里有单选按钮，但是当点击第一个节点单选按钮时，第二个节点单选按钮取消选择。 未将每个节点单选按钮与其他节点单选按钮分开
答案 0 :(得分：1)
我认为你所说的是当你检查树中的一个单选按钮时，所有其他单选按钮都是未选中的，这不是你想要的。这就是单选按钮的行为方式。如果您希望能够独立检查按钮，则需要使用复选框。如果您希望按钮在较小的组中工作，则需要定义这些组。