用AS3调用摄像头（附源代码下载）

package{
importflash.display.Sprite;
importflash.text.*;
importflash.media.Camera;
importflash.events.StatusEvent;
importflash.events.ActivityEvent;
importflash.media.Video;

publicclassCameraExextendsSprite
{
privatevarlabel:TextField;
privatevarcamera:Camera;

publicfunctionCameraEx()
{
label=addLabel("CameraEx");

camera=Camera.getCamera();

if(camera!=null){
camera.addEventListener(StatusEvent.STATUS,statusHandler);
camera.addEventListener(ActivityEvent.ACTIVITY,activityHandler);

varvideo:Video=newVideo(200,200);
video.attachCamera(camera);
addChild(video);
video.x=20;
video.y=20;
}
else{
label.text="不能使用";
}
}

privatefunctionstatusHandler(evt:StatusEvent):void{
if(camera.muted)label.text="不能使用";
}

privatefunctionactivityHandler(evt:ActivityEvent):void{
if(evt.activating){
label.text="检测开始";
}
else{
label.text="检测停止";
}
}

privatefunctionaddLabel(text:String):TextField{
varlabel:TextField=newTextField();
label.autoSize=TextFieldAutoSize.LEFT;
label.text=text;
addChild(label);
returnlabel;
}
}
}