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【ActionScript】 flex音乐播放器
作者:figer1 / 发布于2013/3/1/ 2459
flex音乐播放器

	//这里是音乐播放模块的部分代码

	/**
	* 音乐是否正在播放
	*/
	private var isplaying:Boolean = false;
	/**
	* 播放列表中被选中的当前项
	*/
	private var currentSelectedItem:String;
	/**
	* 功能函数工具
	*/
	private var toolfunction:ToolFunction = new ToolFunction();

	/**
	*播放/暂停按钮
	* @param event
	*
	*/
	protected function play_pause_Btn_clickHandler(event:MouseEvent):void{
	if(isplaying==false&&currentMusicSound==null&&currentMusicChannel ==null){
	 //此状态为 启动播放器 然后点击播放按钮 状态(空状态)
	 currentMusicUrlRequest =new URLRequest(mfi.filePathArrC.toArray()[(mfi.fileNameArrC.toArray().indexOf(playerList.selectedItem))]); //new URLRequest("D:/kuku/" + playerList.selectedItem);
	 currentMusicSound = new Sound();
	 currentMusicSound.load(currentMusicUrlRequest);
	 currentMusicSound.addEventListener(Event.COMPLETE,load_CompleteHandler);
	
	 currentMusicChannel = currentMusicSound.play();//开始播放
	 timer_GetCurrentPositionHandler();
	 currentMusicChannel.addEventListener(Event.SOUND_COMPLETE,autoPlayNext);//自动播放下一首
	 play_pause_Btn.label = "暂停";
	 isplaying =true;
	 musicName.text = playerList.selectedItem;
	}else if(isplaying==true&&currentMusicSound!=null&&currentMusicChannel !=null){
	 //此状态为 播放过程中点击 暂停按钮 状态
	 currentMusicPosition = currentMusicChannel.position;//记录暂停位置
	 currentMusicChannel.stop();//暂停
	 lrcTimer.stop();
	 //lrcTimer.s
	 play_pause_Btn.label = "播放";
	 isplaying =false;
	}else if(isplaying==false&&currentMusicSound!=null&&currentMusicChannel !=null){
	 //此状态为 暂停后点击播放按钮 状态
	 currentMusicChannel = currentMusicSound.play(currentMusicPosition);
	 timer_GetCurrentPositionHandler();
	 currentMusicChannel.addEventListener(Event.SOUND_COMPLETE,autoPlayNext);//自动播放下一首
	 adjustLrcByposiotion();
	 //lrcTimer.stop();
	 isplaying = true;
	 play_pause_Btn.label = "暂停";
	}
	}

	
	/**
	* 正在播放的歌曲的总时长
	*/
	private var len:int;

	/**
	* 文件加载完成 能读取到音乐的总时长
	* @param event
	*
	*/
	protected function load_CompleteHandler(event:Event):void{
	len = currentMusicSound.length;
	totalTime.text = Tool4DateTime.millionSecond2MinuteSecond(len);
	lrcLoad();
	}

	/**
	* 同步更新已经播放的时间的计时器
	*
	*/
	protected function timer_GetCurrentPositionHandler():void{
	var clock:Timer = new Timer(100,int(len/1000/60*10));//每0.1秒更新一次
	clock.start();
	clock.addEventListener(TimerEvent.TIMER,showTime);
	}

	/**
	* 显示已经播放的总时间
	* @param event
	*
	*/
	protected function showTime(event:Event):void{
	playingProcess.maximum = int(len/1000)*10;//每秒钟10格
	playingProcess.value = int(currentMusicPosition/1000*10);
	
	currentMusicPosition = currentMusicChannel.position;
	playedTime.text = Tool4DateTime.millionSecond2MinuteSecond(currentMusicPosition);
	}

	/**
	* 播放进度条 可以拖动
	* @param event
	*
	*/
	protected function playingProcess_changeHandler(event:Event):void{
	if(currentMusicChannel!=null){
	 currentMusicPosition = playingProcess.value*1000/10;//当前音乐播放进度
	 currentMusicChannel.stop();
	
	 currentVolum = volumeSlider.value*1.0/40;
	 currentMusicChannel = currentMusicSound.play(currentMusicPosition);
	
	 currentMusicChannel.addEventListener(Event.SOUND_COMPLETE,autoPlayNext);//自动播放下一首
	 currentMusicTransform = currentMusicChannel.soundTransform;
	 currentMusicTransform.volume = currentVolum;
	 currentMusicChannel.soundTransform = currentMusicTransform;
	
	 adjustLrcByposiotion();
	}else{
	 playingProcess.value=0;
	}
	}
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