progressBar控件完成时给出声音提示.

progressBar控件完成时的效果completeEffect. 示例：

代码：

<? xml version="1.0" encoding="utf-8" ?>
<!--  http://blog.flexexamples.com/2008/06/30/playing-a-sound-effect-when-a-progressbar-control-completes-in-flex/  -->
< mx:Application  xmlns:mx ="http://www.adobe.com/2006/mxml"
        layout ="vertical"
        verticalAlign ="middle"
        backgroundColor ="white" >

     < mx:Script >
         <![CDATA[
            import mx.events.SliderEvent;

            private function slider_change(evt:SliderEvent):void {
                progressBar.setProgress(evt.value, slider.maximum);
            }
         ]]>
     </ mx:Script >

     < mx:SoundEffect  id ="ding"
            source ="@Embed('ding.mp3')"   />  

     < mx:ApplicationControlBar  dock ="true" >
         < mx:Form  styleName ="plain" >
             < mx:FormItem  label ="percentComplete:" >
                 < mx:HSlider  id ="slider"
                        minimum ="0"
                        maximum ="100"
                        value ="0"
                        snapInterval ="1"
                        tickInterval ="10"
                        liveDragging ="true"
                        showTrackHighlight ="true"
                        change ="slider_change(event);"   />
             </ mx:FormItem >
         </ mx:Form >
     </ mx:ApplicationControlBar >

     < mx:ProgressBar  id ="progressBar"
            mode ="manual"
            completeEffect =" {ding} "   />

</ mx:Application >

也可以通过AS实现：

<? xml version="1.0" encoding="utf-8" ?>
<!--  http://blog.flexexamples.com/2008/06/30/playing-a-sound-effect-when-a-progressbar-control-completes-in-flex/  -->
< mx:Application  xmlns:mx ="http://www.adobe.com/2006/mxml"
        layout ="vertical"
        verticalAlign ="middle"
        backgroundColor ="white"
        initialize ="init();" >

     < mx:Script >
         <![CDATA[
            import mx.containers.ApplicationControlBar;
            import mx.containers.Form;
            import mx.containers.FormItem;
            import mx.controls.HSlider;
            import mx.controls.ProgressBar;
            import mx.controls.ProgressBarMode;
            import mx.effects.SoundEffect;
            import mx.events.SliderEvent;

            [Embed("ding.mp3")]
            private var dingMP3:Class;

            private var ding:SoundEffect;
            private var slider:HSlider;
            private var progressBar:ProgressBar;

            private function init():void {
                ding = new SoundEffect();
                ding.source = dingMP3;

                slider = new HSlider();
                slider.minimum = 0;
                slider.maximum = 100;
                slider.value = 0;
                slider.snapInterval = 1;
                slider.tickInterval = 10;
                slider.liveDragging = true;
                slider.setStyle("showtrackHighlight", true);
                slider.addEventListener(SliderEvent.CHANGE,
                            slider_change);

                var formItem:FormItem = new FormItem();
                formItem.label = "percentComplete:";
                formItem.addChild(slider);

                var form:Form = new Form();
                form.styleName = "plain";
                form.addChild(formItem);

                var appControlBar:ApplicationControlBar;
                appControlBar = new ApplicationControlBar();
                appControlBar.dock = true;
                appControlBar.addChild(form);
                Application.application.addChildAt(appControlBar, 0);

                progressBar = new ProgressBar();
                progressBar.mode = ProgressBarMode.MANUAL;
                progressBar.setStyle("completeEffect", ding);
                addChild(progressBar);
            }

            private function slider_change(evt:SliderEvent):void {
                progressBar.setProgress(evt.value, slider.maximum);
            }
         ]]>
     </ mx:Script >

</ mx:Application >