AdvancedDataGrid 数据字段刷新
我对 AdvancedDataGrid 有疑问;我希望“实际”和“估计”字段随计时器功能而改变,但它不起作用。它只能通过随着树结构的崩溃而刷新所有的adg来起作用。我希望如果树被“分解”,则仅刷新实际字段和估计字段。抱歉我的英语不正确。 这是代码
<?xml version="1.0" encoding="utf-8"?>
<mx:WindowedApplication initialize="init();" xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute">
<mx:Script>
<![CDATA[
import mx.utils.ArrayUtil;
import mx.collections.*;
import flash.utils.Timer;
import mx.controls.advancedDataGridClasses.AdvancedDataGridColumn;
[Bindable]
public var randomNumber:Number = new Number
public function randomValues():Number
{
randomNumber=Math.random()*100
randomNumber*=100
randomNumber=Math.round(randomNumber)
randomNumber/=100
trace(randomNumber)
return randomNumber
}
public var timer:Timer = new Timer(20);
public function timing():void{
timer.addEventListener(TimerEvent.TIMER,function(event:Event):void{randomValues()});
}
[Bindable]
public var dpFlat:ArrayCollection = new ArrayCollection;
public function dpCollection():ArrayCollection
{
dpFlat= new ArrayCollection([
{Continente:"Europa", Paese:"Italia", Actual:randomValues(), Estimate:randomValues()},
{Continente:"Europa", Paese:"Germania", Actual:randomValues(), Estimate:randomValues()}
]);
return dpFlat;
}
public function init():void{
dpCollection()
randomValues()
}
]]>
</mx:Script>
<mx:AdvancedDataGrid horizontalScrollPolicy="on" columnWidth="100" resizableColumns="false" id="myADG" width="469" height="223" color="0x323232" initialize="gc.refresh();">
<mx:dataProvider>
<mx:GroupingCollection id="gc" source="{dpCollection()}">
<mx:grouping>
<mx:Grouping>
<mx:GroupingField name="Continente"/>
<mx:GroupingField name="Paese"/>
</mx:Grouping>
</mx:grouping>
</mx:GroupingCollection>
</mx:dataProvider>
<mx:columns>
<mx:AdvancedDataGridColumn dataField="Continente"/>
<mx:AdvancedDataGridColumn dataField="Paese"/>
<mx:AdvancedDataGridColumn id="act" dataField="Actual"/>
<mx:AdvancedDataGridColumn id="est" dataField="Estimate"/>
</mx:columns>
</mx:AdvancedDataGrid>
<mx:TextArea text="{randomNumber}" x="477" y="10"/>
<mx:Button click="timing()" x="10" y="231" label="Start timing function"/>
<mx:Button click="timer.start()" x="161" y="231" label="Start the time"/>
<mx:Button click="timer.stop()" x="275" y="231" label="Stop the time"/>
</mx:WindowedApplication>
I have a problem with an AdvancedDataGrid; i want the fields Actual and Estimate to change with the timer function but it doesn't work. It works only by refreshing all the adg with the collapse of the tree structure. I want that if the tree is "exploded" only actual and estimate fields refresh. Sorry for my uncorrect english.
Here's the code
<?xml version="1.0" encoding="utf-8"?>
<mx:WindowedApplication initialize="init();" xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute">
<mx:Script>
<![CDATA[
import mx.utils.ArrayUtil;
import mx.collections.*;
import flash.utils.Timer;
import mx.controls.advancedDataGridClasses.AdvancedDataGridColumn;
[Bindable]
public var randomNumber:Number = new Number
public function randomValues():Number
{
randomNumber=Math.random()*100
randomNumber*=100
randomNumber=Math.round(randomNumber)
randomNumber/=100
trace(randomNumber)
return randomNumber
}
public var timer:Timer = new Timer(20);
public function timing():void{
timer.addEventListener(TimerEvent.TIMER,function(event:Event):void{randomValues()});
}
[Bindable]
public var dpFlat:ArrayCollection = new ArrayCollection;
public function dpCollection():ArrayCollection
{
dpFlat= new ArrayCollection([
{Continente:"Europa", Paese:"Italia", Actual:randomValues(), Estimate:randomValues()},
{Continente:"Europa", Paese:"Germania", Actual:randomValues(), Estimate:randomValues()}
]);
return dpFlat;
}
public function init():void{
dpCollection()
randomValues()
}
]]>
</mx:Script>
<mx:AdvancedDataGrid horizontalScrollPolicy="on" columnWidth="100" resizableColumns="false" id="myADG" width="469" height="223" color="0x323232" initialize="gc.refresh();">
<mx:dataProvider>
<mx:GroupingCollection id="gc" source="{dpCollection()}">
<mx:grouping>
<mx:Grouping>
<mx:GroupingField name="Continente"/>
<mx:GroupingField name="Paese"/>
</mx:Grouping>
</mx:grouping>
</mx:GroupingCollection>
</mx:dataProvider>
<mx:columns>
<mx:AdvancedDataGridColumn dataField="Continente"/>
<mx:AdvancedDataGridColumn dataField="Paese"/>
<mx:AdvancedDataGridColumn id="act" dataField="Actual"/>
<mx:AdvancedDataGridColumn id="est" dataField="Estimate"/>
</mx:columns>
</mx:AdvancedDataGrid>
<mx:TextArea text="{randomNumber}" x="477" y="10"/>
<mx:Button click="timing()" x="10" y="231" label="Start timing function"/>
<mx:Button click="timer.start()" x="161" y="231" label="Start the time"/>
<mx:Button click="timer.stop()" x="275" y="231" label="Stop the time"/>
</mx:WindowedApplication>
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您没有更改
Timer
处理程序中的dataProvider
。您只需调用仅返回一个数字的randomValues()
方法。从计时器的处理程序中调用 gc.source = dpCollection();。
更新:显然,< code>IGroupingCollection 不会自动检测组的更改,因此您必须在设置组属性后调用refresh()方法来更新视图。
似乎有解决此问题的方法 此处
You are not changing the
dataProvider
in theTimer
handler. You are just calling therandomValues()
method that just returns a number.Call
gc.source = dpCollection();
from the Timer's handler.Update: Apparently, the
IGroupingCollection
does not detect changes to a group automatically, so you must call the refresh() method to update the view after setting the group property.There seem to be a work around to this issue here