Question

我是flex.i的新手我正在尝试使用文件referencei在flex中动态添加图片需要在scroller.i中添加图片使用下面的代码，但添加图片不可见。任何人都可以帮我解决这个问题pls.Thanks in预先

<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009" 
               xmlns:s="library://ns.adobe.com/flex/spark" 
               xmlns:mx="library://ns.adobe.com/flex/mx" minWidth="955" minHeight="600"
               xmlns:net="flash.net.*">
    <fx:Script>
        <![CDATA[
            import mx.controls.Alert;
            import mx.controls.Image;
            import mx.utils.ObjectUtil;
            private var myImage:Image;
            private function OnbuttonClick(evt:MouseEvent):void {
                var arr:Array = [];
                arr.push(new FileFilter("Images", ".gif;*.jpeg;*.jpg;*.png"));
                fileReference.browse(arr);
            }

            private function FileRefSelect(evt:Event):void {
                fileReference.load();
            }

            private function FileRefComplete(evt:Event):void {
                Alert.show(ObjectUtil.toString(fileReference));
                myImage             = new Image();
                //img.source = fileReference.data;

                myImage.maxWidth    = 100;
                myImage.maxHeight   = 100;
                myImage.source      = fileReference.data;
                vg.addChild(myImage);

            }
        ]]>
    </fx:Script>

    <fx:Declarations>
        <net:FileReference id="fileReference"
                           select="FileRefSelect(event);"
                           complete="FileRefComplete(event);" />
    </fx:Declarations>



    <mx:ControlBar>
        <mx:Button id="btn" label="Browse Your Image"  click="OnbuttonClick(event);" />
    </mx:ControlBar>

    <s:Scroller id="scrllr" x="50" y="100" width="100" height="280" focusEnabled="false"
                hasFocusableChildren="true">
        <s:VGroup id="vg">

        </s:VGroup>
    </s:Scroller>


</s:Application>

Answer 1

您需要使用vg.addElement(myImage);代替vg.addChild(myImage);。我假设你也会提到同样的例外。

动态添加图像到滚动条

1 个答案: