[AS3]创建 Video 和 NetStream 对象并调用 Video.attachNetStrea

创建 Video 和 NetStream 对象并调用 Video.attachNetStream() 和 NetStream.play() 的代码放入处理函数。仅在试图连接 NetConnection 对象成功时调用处理函数，即，当 netStatus 事件返回一个 info 对象，该对象带有一个表示成功的 code 属性时，才调用该处理函数。建议先等待连接成功，然后再调用 NetStream.play()。

package { 
   import flash.display.Sprite; 
   import flash.events.*; 
   import flash.media.Video; 
   import flash.net.NetConnection; 
   import flash.net.NetStream; 
 
   public class VideoExample extends Sprite { 
       private var videoURL:String = "Video.flv"; 
       private var connection:NetConnection; 
       private var stream:NetStream; 
 
       public function VideoExample() { 
           connection = new NetConnection(); 
           connection.addEventListener(NetStatusEvent.NET_STATUS, netStatusHandler); 
           connection.addEventListener(SecurityErrorEvent.SECURITY_ERROR, securityErrorHandler); 
           connection.connect(null); 
       } 
 
       private function netStatusHandler(event:NetStatusEvent):void { 
           switch (event.info.code) { 
               case "NetConnection.Connect.Success": 
                   connectStream(); 
                   break; 
               case "NetStream.Play.StreamNotFound": 
                   trace("Unable to locate video: " + videoURL); 
                   break; 
           } 
       } 
 
       private function connectStream():void { 
           stream = new NetStream(connection); 
           stream.addEventListener(NetStatusEvent.NET_STATUS, netStatusHandler); 
           stream.addEventListener(AsyncErrorEvent.ASYNC_ERROR, asyncErrorHandler); 
           var video:Video = new Video(); 
           video.attachNetStream(stream); 
           stream.play(videoURL); 
           addChild(video); 
       } 
 
       private function securityErrorHandler(event:SecurityErrorEvent):void { 
           trace("securityErrorHandler: " + event); 
       } 
        
       private function asyncErrorHandler(event:AsyncErrorEvent):void { 
           // ignore AsyncErrorEvent events. 
       } 
   } 
}