NativeApplication.nativeApplication.addEventListener(Event.NETWORK_CHANGE, onNetworkChange);

 private var monitor:URLMonitor;

             public var urlStr:String;

             public function onNetworkChange(event:Event):void

             {

                 trace("网络连接发生改变");

                 //监视网络状态

                 var url:URLRequest=new URLRequest(urlStr);

                 url.method = "GET";

                 monitor = new URLMonitor(url);

                 monitor.addEventListener(StatusEvent.STATUS, onMonitor);

                 monitor.start();

             }

             private function onMonitor(event:Event):void

             {

                 monitor.removeEventListener(StatusEvent.STATUS, onMonitor);

                 trace("连接"+monitor.available);

                 if(monitor.available){

                     //网络连接可用

                     //处理联网操作

                     setDataHandler();

                     papersViewId.initVu();

                     dispatchEvent(new NetOkEvent(NetOkEvent.NETOK_EVENT));

                 }

                 else

                 {

                     //网络连接不可用，相关处理

                     dispatchEvent(new NetErrorEvent(NetErrorEvent.NETERROR_EVENT));

                 }

             }