Flex读文本文件

布局：

1 <s:Group id="maskGroup" width="503" height="332" x="657" y="165">

2         <s:Rect width="100%" height="100%">

3             <s:fill>

4                 <s:SolidColor color="#000000"/>

5             </s:fill>

6         </s:Rect>

7     </s:Group>

 

 1 <mx:Canvas x="626" y="151" width="565" height="360" backgroundColor="#5976A4"

 2                horizontalScrollPolicy="off" verticalScrollPolicy="off">

 3         <s:Scroller id="scrollerId" width="100%" height="100%"

 4                     horizontalScrollPolicy="off" interactionMode="touch"

 5                     skinClass="skin.libraryIntroduce.ScrollerSkin">

 6             <s:Group x="0" y="0" width="565" height="360">

 7                 <s:Label id="introTxt" x="31" y="14" width="503" color="#FFFFFF" fontFamily="微软雅黑"

 8                          fontSize="20" textAlign="left" verticalAlign="top"

 9                          mask="{maskGroup}"/>

10             </s:Group>

11         </s:Scroller>

12     </mx:Canvas>

AS:

var file:File=new File("文本文件的绝对路径");

if(file2.exists)

                    {

                        var fileStream:FileStream=new FileStream();

                        fileStream.open(file,FileMode.READ);

    //算高度仅供参考                    

introTxt.height=(Math.floor(Number(fileStream.bytesAvailable/45))+5)*30;

                        introTxt.text=fileStream.readMultiByte(fileStream.bytesAvailable,"gbk");

                        trace(introTxt.height);

                        scrollerId.verticalScrollBar.value=0;

                    }