SampleDataEvent.SAMPLE_DATA 在 Flex 中永远不会触发？

Question

麦克风.addEventListener（SampleDataEvent.SAMPLE_DATA，gotMicData）； 事件gotMicData永远不会被触发..但是我尝试使用dispatchEvent，但这将返回null byteArray.. 然而类似的代码在 Flashcs5 中运行良好...

        import flash.events.SampleDataEvent;
        import flash.media.Microphone;
        import flash.media.Sound;
        import flash.utils.ByteArray;

        [Bindable] private var microphoneList:Array;
                 protected var microphone:Microphone;
                 protected var isRecording:Boolean = false;
                 protected var soundRecording:ByteArray;
                 protected var soundOutput:Sound;

        protected function setupMicrophoneList():void
        {
            microphoneList = Microphone.names;
        }

        protected function setupMicrophone():void
        {
            microphone = Microphone.getMicrophone(comboMicList.selectedIndex);
            microphone.rate = 44;
        }

        protected function startMicRecording():void
        {
            isRecording = true;
            soundRecording = new ByteArray();
            microphone.addEventListener(SampleDataEvent.SAMPLE_DATA, gotMicData);
        }

        protected function stopMicRecording():void
        {
            isRecording = false;
            microphone.removeEventListener(SampleDataEvent.SAMPLE_DATA, gotMicData);
        }

        private function gotMicData(micData:SampleDataEvent):void
        {
            soundRecording.writeBytes(micData.data);
        }

        protected function playbackData():void
        {
            soundRecording.position = 0;

            soundOutput = new Sound();
            soundOutput.addEventListener(SampleDataEvent.SAMPLE_DATA, playSound);

            soundOutput.play();
        }

        private function playSound(soundOutput:SampleDataEvent):void
        {
            if (!soundRecording.bytesAvailable > 0)
                return;
            for (var i:int = 0; i < 8192; i++)
            {
                var sample:Number = 0;
                if (soundRecording.bytesAvailable > 0)
                    sample = soundRecording.readFloat();
                soundOutput.data.writeFloat(sample); 
                soundOutput.data.writeFloat(sample);  
            }               
        }


    ]]>
</mx:Script>

Answer 1

安装 Flex Builder 还会将 sdk 3.2 设置为默认值，我发现您只需下载最新的 Flex sdk 并在 Flex Builder 中使用它..代码就可以正常工作..

Answer 2

SampleDataEvent 是 Fl​​ash Player 10.1 的一项功能。在项目的 Flex 编译器属性中将播放器目标设置为 10.1 或更高，这样就可以了。

Answer 3

嘿，只是为了添加到此线程中，我遇到了类似的问题，直到我看到此博客上的评论：

http: //www.bytearray.org/?p=1858

基本上，您必须确保您的舞台足够大以容纳闪存安全设置窗口。

试图弄清楚这种美让我发疯。