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向TileList中动态添加图片

2009-05-17 14:28

        最近想用Flex3做一个扑克牌游戏，于是选用了TileList控件作为显示窗口。可是如何才能将图片绑定到控件上呢，官方的例子中用的是mxml标签的形式：

       <mx:dataProvider>
                <mx:Array>
                    <mx:Object label="Nokia 6630" icon="{phone1}"/>
                    <mx:Object label="Nokia 6680" icon="{phone2}"/>
                    <mx:Object label="Nokia 7610" icon="{phone3}"/>
                    <mx:Object label="Nokia LGV" icon="{phone4}"/>
                    <mx:Object label="Nokia LMV" icon="{phone5}"/>
                </mx:Array>
            </mx:dataProvider>
        但是想动态改变数据源用上面的方式是很麻烦的，因此在官方有给出了用ActionScript的方式：

        <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" width="450">
   <mx:Script>
      <![CDATA[
         import mx.collections.*;
         import mx.controls.Image;

         private var catalog:ArrayCollection;
         private static var cat:Array = [
            "../assets/Nokia_6820.gif", "../assets/Nokia_3595.gif",
            "../assets/Nokia_3650.gif", "../assets/Nokia_6010.gif"
         ];

         /* Initialize the HorizontalList control by setting its dataProvider
            property to an ArrayCollection containing the items parameter. */
         private function initCatalog(items:Array):void {
            catalog = new ArrayCollection(items);
            myList.dataProvider = catalog;
         }
      ]]>  
   </mx:Script>

    <!-- A four-column HorizontalList. The itemRenderer is a Flex Image control.
       When the control is created, pass the cat array to the initialization routine. -->
    <mx:HorizontalList id="myList"
        columnWidth="100"
        rowHeight="100"
        columnCount="4"
        itemRenderer="mx.controls.Image"
        creationComplete="initCatalog(cat)"
    />
</mx:Application>
        要想改变图片的大小可以修改columnWidth和rowHeight属性即可。

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