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POFlex/AS3: Data binding through a refenced property
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  1. POFlex/AS3: Data binding through a refenced property
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    copied!<p>I have:</p> <p>class A: with a property "data:ArrayCollection". It's my data source (data provider) and has bitmaps.</p> <p>class B: has an instance of A (called "Ainst") and calls the following method: C.init( Ainst.data). To pass the data provider to Object C.</p> <p>class C: has a reference of the data provider "data" (because of "init" method). It shows the arrayCollection into Images as: Image.source = data.getItemAt(0).</p> <p>But C never updates its images, that is, data binding doesn't work with this scheme. I've put [Bindable] meta-tag in all properties and even classes.</p> <p>class A:</p> <pre><code>public class A{ [Bindable]public var data:ArrayCollection; } </code></pre> <p>class B:</p> <pre><code>public class B{ [Bindable]public var Ainst:A; public var Cinst:C; public function init(){ Cinst = new C(); Cinst.init(A.data) } } </code></pre> <p>class C: An image menu with 3 items (bitmaps)</p> <pre><code> &lt;s:VGroup xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" xmlns:mx="library://ns.adobe.com/flex/mx" xmlns:local="*" horizontalAlign="center" paddingTop="10" paddingBottom="10" gap="10"&gt; &lt;fx:Script&gt; &lt;![CDATA[ [Bindable] public var _images:ArrayCollection; public function init( images:ArrayCollection ):void{ _images = images; } ]]&gt; &lt;/fx:Script&gt; &lt;ms:Image id="PreviousButton" smoothBitmapContent="true" width="55" height="55" source="@Embed(source='/../figures/upArrow.png')"/&gt; &lt;ms:Image id="TopItem" smoothBitmapContent="true" maintainAspectRatio="true" x="12.5" source="{_images.getItemAt(0)}" /&gt; &lt;ms:Image id="MiddleItem" smoothBitmapContent="true" maintainAspectRatio="true" x="12.5" source="{_images.getItemAt(1)}"/&gt; &lt;ms:Image id="BottomItem" smoothBitmapContent="true" maintainAspectRatio="true" x="12.5" source="{_images.getItemAt(3)}"/&gt;&lt;!-- getItemAt(2).image --&gt; &lt;ms:Image id="NextButton" smoothBitmapContent="true" width="55" height="55" source="@Embed(source='/../figures/downArrow.png')"/&gt; &lt;/s:VGroup&gt; </code></pre> <p>Any thought? Thanks. </p>
 

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