Flex播放器(实现播放、缓冲进度条和音频曲线显示(2)

// 保存 512 个声音波形的快照
            private var bytes:ByteArray = new ByteArray();
            // SoundBar 的个数
            private var barNum:uint = 64;
            // 保存所有 SoundBar 的引用
            private var soundBars:Array = new Array();
           
            //定时器
            private var timer : Timer;
           
            //Application的initialize初试化事件
            private function init(event:Event):void
            {
                var loader:URLLoader = new URLLoader();
                loader.load(new URLRequest(xmlPath));
                loader.addEventListener(Event.COMPLETE,Xml_Complete);
               
                timer = new Timer(100);
                timer.addEventListener(TimerEvent.TIMER,timerTick);
               
                var barWidth:Number = boxSoundBar.width*1.00/barNum;
                // 初始化Canvas为音频条，放入舞台并加入数组
                for (var i:uint = 0; i < barNum; i++)  {
                   var soundBar:Canvas = new Canvas();
                   soundBar.width = barWidth;
                   soundBar.height = boxSoundBar.height;
                   soundBar.x = i * barWidth;
                      soundBar.y =  0;

var g:Graphics = soundBar.graphics;
                   g.lineStyle(1,0x6688AA,1);
                   g.beginGradientFill(GradientType.RADIAL,[0x33cc00,0x456628],[1,1],[0,255],null,SpreadMethod.REFLECT,InterpolationMethod.RGB,0);
                   g.drawRect(0,0,soundBar.width,soundBar.height);
                   g.endFill();
                   boxSoundBar.addChild(soundBar);
                   soundBars.push(soundBar);
                }