Question

这是我的swf加载代码：

function loadBall(e:MouseEvent):void{
var mLoader:Loader = new Loader();
var mRequest:URLRequest = new URLRequest("ball.swf");
mLoader.contentLoaderInfo.addEventListener(Event.COMPLETE, onCompleteHandler);
mLoader.contentLoaderInfo.addEventListener(ProgressEvent.PROGRESS, onProgressHandler);
mLoader.load(mRequest);
}

function onCompleteHandler(loadEvent:Event){
    currentMovie = MovieClip(loadEvent.currentTarget.content) 
    addChild(currentMovie);
    trace(loadEvent);
}
function onProgressHandler(mProgress:ProgressEvent){
var percent:Number = mProgress.bytesLoaded/mProgress.bytesTotal;
trace(percent);
}

我希望检测ball.swf是否已到达第244帧，然后将其卸载。有没有办法在不下载其他类的情况下执行此操作？

Answer 1

在球影片剪辑的第244帧中，您可以发送一个事件来通知MainTimeline已经到达第244帧，然后您将需要删除对球mc的所有引用，并让垃圾收集从那里处理它。 / p>

//in the ball movie clip, on frame 244

this.dispatchEvent( new Event("End of Movie") );

//in the main timeline , after loading the swf

function onCompleteHandler(event:Event):void
{
   //keep the ball movie clip as a local variable
   var ball:MovieClip = event.target.loader.content as MovieClip;
   ball.name = "ball";
   ball.addEventListener( "End of Movie" , remove , false , 0 , true );
   addChild( ball);
}

function remove(event:Event):void
{ 
   event.target.removeEventListener( 'End of Movie' , remove );

   //now you can retrieve the ball mc by its name and remove it from the stage
   this.removeChild( this.getChildByName('ball') );
}

Answer 2

订阅舞台的Event.ENTER_FRAME事件并检查您创建的影片剪辑的currentFrame属性。

private static final BALL_END_FRAME : int = 244;

private var _ball : MovieClip;

function onCompleteHandler(event:Event):void
{
   _ball = event.target.loader.content as MovieClip;
   addChild(_ball);

   stage.addEventListener(Event.ENTER_FRAME, onEnterFrameHandler);
}

function onEnterFrameHandler(event:Event):void
{
   if (_ball.currentFrame == BALL_END_FRAME)
   {
      removeChild(_ball);
      stage.removeEventListener(Event.ENTER_FRAME, onEnterFrameHandler);
   }
}

当外部SWF到达第X帧时，如何卸载它？

2 个答案: