Question

我在设置精灵的子索引时遇到问题...它在程序的第一次运行时完美运行，但在第二次运行时失败。对于上下文，此函数位于一个类中，该类接受一个精灵数组并显示它们。我的问题在于setChildIndex(_selected as DisplayObject, numChildren-1);

private function enlarge(e:MouseEvent):void
    {
        if (!_open)
        {
            _selected = e.currentTarget;
            _selectedOrigX = _selected.x;
            _selectedOrigY = _selected.y;
            _selectedID = _selected.id;

            _open = true;

            setChildIndex(_selected as DisplayObject, numChildren-1);

            new TweenLite(_selected, 0.5, {width:984, height:640, x:0, y:0, ease:Bounce.easeOut} );

            _yes = new Yes_btn();
            addChild(_yes);

            _no = new No_btn();
            addChild(_no);

            _yes.addEventListener(MouseEvent.CLICK, selected);
            _no.addEventListener(MouseEvent.CLICK, cancel);
        }
    }

Answer 1

问题在于我忘记从对象中删除以前的事件侦听器。使用以下代码，一切都能正常工作。

addEventListener(Event.REMOVED_FROM_STAGE, removed);

private function removed(e:Event):void
    {
        for (var i:uint; i < _objectsArray.length; i ++)
        {
            var object:Sprite = _objectsArray[i];

            object.removeEventListener(MouseEvent.CLICK, enlarge);

        }
    }

提供的DisplayObject必须是调用者的子级？

1 个答案: