[AS3]as3检测与调用usb摄像头的源代码实例

[AS3]as3检测与调用usb摄像头的源代码实例

package { 
 
    import flash.display.Sprite; 
 
    import flash.text.*; 
 
    import flash.media.Camera; 
 
    import flash.events.StatusEvent; 
 
    import flash.events.ActivityEvent; 
 
    import flash.media.Video; 
 
  
 
    public class CameraEx extends Sprite 
 
    { 
 
        private var label:TextField; 
 
        private var camera:Camera; 
 
         
 
        public function CameraEx() 
 
        { 
 
            label=addLabel("CameraEx"); 
 
             
 
            camera=Camera.getCamera(); 
 
              
 
            if(camera!=null){ 
 
                camera.addEventListener(StatusEvent.STATUS,statusHandler); 
 
                camera.addEventListener(ActivityEvent.ACTIVITY,activityHandler); 
 
                 
 
                var video:Video=new Video(200,200); 
 
                video.attachCamera(camera); 
 
                addChild(video); 
 
                video.x=20; 
 
                video.y=20; 
 
            } 
 
            else{ 
 
                label.text="CuPlayer.com:不能使用"; 
 
            } 
 
        } 
 
         
 
        private function statusHandler(evt:StatusEvent):void{ 
 
            if(camera.muted) label.text="CuPlayer.com:不能使用"; 
 
        } 
 
         
 
        private function activityHandler(evt:ActivityEvent):void{ 
 
            if(evt.activating){ 
 
                label.text="CuPlayer.com:检测开始"; 
 
            } 
 
            else{ 
 
                label.text="CuPlayer.com:检测停止"; 
 
            } 
 
        } 
 
         
 
        private function addLabel(text:String):TextField{ 
 
            var label:TextField=new TextField(); 
 
            label.autoSize=TextFieldAutoSize.LEFT; 
 
            label.text=text; 
 
            addChild(label); 
 
            return label; 
 
        } 
 
    } 
 
}