Flex ItemRenderer 问题

发布于 2024-09-05 05:06:03 字数 1172 浏览 5 评论 0原文

我在tilelist中使用Checkbox作为ItemRenderer。我正在尝试设置复选框通过 xml 选择值。我完美地得到了价值观..但是复选框无法绑定值（无法接受）。它是自动为所有复选框设置 true。这是我的 xml

<PmhTreeAllow>
  <PmhTreeAllowname id='1' label ='Allow Text' isField='false'/>
  <PmhTreeAllowname id='2' label ='Document Link' isField='false'/>
  <PmhTreeAllowname id='3' label ='Test Results Entry'isField='false'/>
  <PmhTreeAllowname id='4' label ='Dummy' isField='false'/>
</PmhTreeAllow>

我的 Tilelist..

<mx:TileList id="tileList" width="160" height="100%" textAlign="left" horizontalScrollPolicy="off" verticalScrollPolicy="off" dataProvider="modelInstance.optionCollList}" columnCount="1" backgroundAlpha="0" borderStyle="none"itemRenderer="com.Frontend.views.treeStructure.myTileList" useRollOver="false" rowHeight="28" itemClick="tileItemClick(event)" columnWidth="150" selectedIndex="0" x="10" y="0">

复选框 ItemRenderer..

<?xml version="1.0" encoding="utf-8"?>
<mx:CheckBox xmlns:mx="http://www.adobe.com/2006/mxml" label="{data.@label}" selected="data.@isField}"/>

提前致谢阿肖克

原文

Am using Checkbox as ItemRenderer in tilelist. Am trying to setting
checkbox selected values through xml. I got the values perfectly.. but
checkbox could not bind the values(could not accept that). It's
automatically sets true for all checkboxes.
This is my xml

<PmhTreeAllow>
  <PmhTreeAllowname id='1' label ='Allow Text' isField='false'/>
  <PmhTreeAllowname id='2' label ='Document Link' isField='false'/>
  <PmhTreeAllowname id='3' label ='Test Results Entry'isField='false'/>
  <PmhTreeAllowname id='4' label ='Dummy' isField='false'/>
</PmhTreeAllow>

My Tilelist..

<mx:TileList id="tileList" width="160" height="100%" textAlign="left" horizontalScrollPolicy="off" verticalScrollPolicy="off" dataProvider="modelInstance.optionCollList}" columnCount="1" backgroundAlpha="0" borderStyle="none"itemRenderer="com.Frontend.views.treeStructure.myTileList" useRollOver="false" rowHeight="28" itemClick="tileItemClick(event)" columnWidth="150" selectedIndex="0" x="10" y="0">

Check box ItemRenderer..

<?xml version="1.0" encoding="utf-8"?>
<mx:CheckBox xmlns:mx="http://www.adobe.com/2006/mxml" label="{data.@label}" selected="data.@isField}"/>

Thanks in Advance
Ashok

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划一舟意中人 2024-09-12 05:06:03

http://www.switchonthecode.com/tutorials/flex-using-item-渲染器

这将帮助你..

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╭ゆ眷念 2024-09-12 05:06:03

出于性能原因，在 itemRenderer 内部使用绑定被认为是一种不好的做法。相反，监听 FlexEvent.DATA_CHANGE 并手动修改您的值。我打赌这样做会解决你的问题。

尝试这样的 itemRenderer：

<mx:CheckBox xmlns:mx="http://www.adobe.com/2006/mxml" label="{data.@label}" selected="data.@isField}" dataChange="onDataChange()">
<mx:Script><[[
 public function onDataChange():void{
 var dataAsXML = data as XML; 
 this.selected = data.@isField
 this.label = data.@label
]]></mx:Script>
</mx:CheckBox>

我没有对 XML 做很多事情，但我怀疑 XML 属性不会绑定，因为 XML 不像 ActionScript 对象，因此 XML 对象上不存在“propertyChanged”绑定事件它们在 AS3 对象上的方式相同。

For performance reasons, it is considered a bad practice to use binding inside an itemRenderer. Instead listen to the FlexEvent.DATA_CHANGE and manually modify your values. I Bet doing so will solve your issue.

Try an itemRenderer like this:

<mx:CheckBox xmlns:mx="http://www.adobe.com/2006/mxml" label="{data.@label}" selected="data.@isField}" dataChange="onDataChange()">
<mx:Script><[[
 public function onDataChange():void{
 var dataAsXML = data as XML; 
 this.selected = data.@isField
 this.label = data.@label
]]></mx:Script>
</mx:CheckBox>

I don't do a lot with XML, but I suspect that the XML properties will not bind because XML is not like an ActionScript object and therefore the "propertyChanged" Binding events do not exist on the XML object the same way they would be on an AS3 object.

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