兼容FF/IE的告警聲播放(基於flash)

回答問題:http://www.iteye.com/problems/22309

 

一般做背景聲的做法是用bgsound或embed,但是它們跟瀏覽器都有關,不如直接用flash來做得方便.

 

 

1.FLASH端代碼如下:

//SoundSwf.as
package {
	import flash.display.*;
	import flash.events.*;
	import flash.media.Sound;
	import flash.net.URLRequest;
	import flash.external.ExternalInterface;
	import flash.utils.*;
	
	public class SoundSwf extends Sprite{
		private var map:Object = new Object();
		public function SoundSwf():void{
			if (ExternalInterface.available){
				ExternalInterface.addCallback("playSound", this.playSound);
			}
		}
		public function playSound(url:String,count:int):void{
			var s:Sound;
			if(!map.hasOwnProperty(url)){
				s = new Sound();
				map.url=s;
				s.addEventListener(Event.COMPLETE,function(e:Event):void{
    				var localSound:Sound = e.target as Sound;
    				localSound.play(0,count);
				});
				s.addEventListener(IOErrorEvent.IO_ERROR, function(e:IOErrorEvent):void{ExternalInterface.call("alert", e);});
				s.load(new URLRequest(url));
			}else{
				s = map.url as Sound;
				s.play(0,count);
			}
		}
	}
}

 

2. JS端調用:

<noscript>
	<object classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=9,0,0,0" width="1" height="1" id="SoundSwf" align="middle">
	<param name="allowScriptAccess" value="sameDomain" />
	<param name="allowFullScreen" value="false" />
	<param name="movie" value="SoundSwf.swf" /><param name="quality" value="high" /><param name="bgcolor" value="#ffffff" />	<embed src="SoundSwf.swf" quality="high" bgcolor="#ffffff" width="1" height="1" name="SoundSwf" align="middle" allowScriptAccess="sameDomain" allowFullScreen="false" type="application/x-shockwave-flash" pluginspage="http://www.adobe.com/go/getflashplayer_cn" />
	</object>
</noscript>
<script>
	window.οnlοad=function(){
		SoundSwf.playSound('event.mp3',2);
		//SoundSwf.playSound('alarm.mp3',1);
		//SoundSwf.playSound('event.mp3',4);
	}
</script>

 

詳細見附件.

ps: js段建議用SwfObject來載入swf.

另外,該示例中, 在onload事件裏面調用是不可靠的,因爲有可能這時候swf還沒初始化完