» 自定义

这是一个Flex的自定义Loading效果,如果你看不到这个flash,请到文章页面查看! Flex里自定义Loading必须继承mx.preloaders.DownloadProgressBar，并定义主程序Application的preloader属性为自定义的loading类。 一般可以定义downloadingLabel属性来更改进度条显示的文字。 不过可以完成自定义loading。 MyLoading： package com.litefeel.preloader { import flash.display.Loader; import flash.display.Shape; import flash.display.Sprite; import flash.events.Event; import flash.events.ProgressEvent; import flash.net.URLRequest; import flash.text.TextField; import flash.text.TextFormat; import mx.events.FlexEvent; import mx.preloaders.DownloadProgressBar; /** * www.litefeel.com * lite3@qq.com * @author lite3 */ public class MyLoading extends DownloadProgressBar { private var _preloader:Sprite; private var logo:Loader new Loader(); private var loadingBar:Shape new Shape(); private var txt:TextField new TextField(); public function MyLoading() { // logo logo.load(new URLRequest("http://www.litefeel.com/logo/logo.jpg")); addChild(logo); // loading bar addChild(loadingBar); // txt var style:TextFormat new TextFormat(null, null, 0xFFFFFF, null, null, null, null, null, "center"); txt.defaultTextFormat style; txt.selectable false; txt.width 200; txt.height 50; addChild(txt); super(); } override public function set preloader(value:Sprite):void { _preloader value; _preloader.contextMenu MyContextMenu.getMyContextNenu(); //四个侦听~分别是 加载进度 / 加载完毕 / 初始化进度 / 初始化完毕 _preloader.addEventListener(ProgressEvent.PROGRESS, loadProgressHandler); _preloader.addEventListener(Event.COMPLETE, loadCompleteHandler); _preloader.addEventListener(FlexEvent.INIT_PROGRESS, loadInitProgressHandler); _preloader.addEventListener(FlexEvent.INIT_COMPLETE, loadInitCompleteHandler); stage.addEventListener(Event.RESIZE, resizeHandler); resizeHandler(null); } private function loadProgressHandler(event:ProgressEvent):void { var ratio:Number event.bytesLoaded/event.bytesTotal; // loading bar loadingBar.graphics.clear(); loadingBar.graphics.beginFill(Math.random() * 0xFFFFFF); loadingBar.graphics.drawRect(0,0, ratio*128, 5); loadingBar.graphics.endFill(); // txt txt.text "Lite3.cn loading " + ((ratio*100)>>0) + "%"; } private function loadCompleteHandler(event:Event):void { txt.text "Lite3.cn loading ok!"; } private function loadInitProgressHandler(event:FlexEvent):void { txt.text "Lite3.cn initialization!"; } private function loadInitCompleteHandler(event:FlexEvent):void { txt.text "Lite3.cn initialization ok!"; _preloader.removeEventListener(ProgressEvent.PROGRESS, loadProgressHandler); _preloader.removeEventListener(Event.COMPLETE, loadCompleteHandler); _preloader.removeEventListener(FlexEvent.INIT_PROGRESS, loadInitProgressHandler); _preloader.removeEventListener(FlexEvent.INIT_COMPLETE, loadInitCompleteHandler); stage.removeEventListener(Event.RESIZE, resizeHandler); //最后这个地方需要dpepatch一个Event.COMPLETE事件..表示加载完毕让swf继续操作~ dispatchEvent(new Event(Event.COMPLETE)); } private function resizeHandler(event:Event):void { logo.x (stage.stageWidth-128) * .5; logo.y (stage.stageHeight-185) *.5; loadingBar.x (stage.stageWidth-128) * .5; loadingBar.y (stage.stageHeight-185) *.5 + 128; txt.x (stage.stageWidth-200) * .5; txt.y (stage.stageHeight-185) *.5 + 135; graphics.clear(); graphics.beginFill(0x333333); graphics.drawRect(0,0,stage.stageWidth,stage.stageHeight); graphics.endFill(); } } } MXML： 完整测试包下载

LiteFeel

Flex自定义loading