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Flash组件开发研究(1)：简单的新闻列表

news 来源：原创 2024/5/7 8:13:43

虽然是一种不成熟的思想，但是目前来讲感觉还是很兴奋。今天做了一个新闻列表，看看下面的图

这个列表是动态生成的。gai

该组件是MovieClip的制作的，采用了两个TextField。

如：写一个类继承 MovieClip类。在这里类里面添加两个TextField 文本。

package { import flash.display.MovieClip; import flash.events.*; import flash.text.*; import flash.display.Shape; public class NewList extends MovieClip { public var title:TextField;//标题 public var date:TextField;//日期 public var content:TextField; public var dataprovider:XML;//指定数据源 private var format:TextFormat; private var shape:Shape; public function NewList() { format=new TextFormat(); format.color=0x000000; format.size=15; content=new TextField(); content.setTextFormat(format); title=new TextField(); title.x=0; title.y=0; title.width=270; title.height=20; title.setTextFormat(format); title.addEventListener(MouseEvent.MOUSE_DOWN,onDown); title.addEventListener(MouseEvent.MOUSE_OVER,onOver); title.addEventListener(MouseEvent.MOUSE_OUT,onOut); date=new TextField(); date.x=319; date.y=0; date.width=107; date.height=20; date.setTextFormat(format); addChild(title); addChild(date); DrawLine();//画下滑线 } private function DrawLine():void { var shape:Shape=new Shape(); shape.graphics.lineStyle(0.5,0,1); shape.graphics.moveTo(0,21); shape.graphics.lineTo(400,21); addChild(shape); } private function onDown(event:MouseEvent):void { var evt:TextEvent=new TextEvent(TextEvent.LINK); evt.text=content.text; this.dispatchEvent(evt); } private function onOver(event:MouseEvent):void { title.textColor=0xFF0000; } private function onOut(event:MouseEvent):void { title.textColor=0x000000; } } }

测试文档：

var xmlManager:XMLManager=new XMLManager(); xmlManager.LoadXML("New.XML"); xmlManager.addEventListener(LoadEvent.LOADXML,completehandler); function completehandler(event:LoadEvent):void { var xml:XML=event.result; var xmllist:XMLList=xml.item; for (var i:uint=0; i<xmllist.length(); i++) { var news:NewList=new NewList(); news.addEventListener(TextEvent.LINK,clickhandler); news.x=100; news.y=130+25*i; news.title.text=xmllist.title[i]; news.date.text=xmllist.date[i]; news.content.text=xmllist.contect[i]; addChild(news); } } function clickhandler(event:TextEvent):void { var str:String=event.text; trace(str); }

外部加载xml返回xml信息：

package { import flash.net.*; import flash.events.*; public class XMLManager extends EventDispatcher { public function XMLManager() { } public function LoadXML(pach:String):void { var ld:URLLoader=new URLLoader(); ld.load(new URLRequest(pach)); ld.addEventListener(Event.COMPLETE,resultHandle); ld.addEventListener(IOErrorEvent .IO_ERROR,errorhandle); } private function resultHandle(e:Event):void { var myxml:XML=XML(e.target.data ); var sendevent:LoadEvent=new LoadEvent(LoadEvent.LOADXML); sendevent.result=myxml; this.dispatchEvent(sendevent); } private function errorhandle(e:Event):void { throw new Error("加载失败"); } } }

package { import flash.events.Event; public class LoadEvent extends Event { public static const LOADXML:String="loadxml"; public var result:XML; public function LoadEvent(type:String,bubbles:Boolean=false,cancelable:Boolean=false) { super(type,false,false); } override public function clone():Event { return new LoadEvent(LoadEvent.LOADXML); } } }

<?xml version="1.0" encoding="gb2312"?> <menu> <item type="news"> <title>Adobe 开发技术日</title> <contect>  </contect> <date>2009-4-18</date> </item> </menu>