Gestouch无效

Question

我使用starling作为图书阅读器应用程序。当我换书时，我处理当前的椋鸟并创建新的椋鸟实例。但是当我创建新的椋鸟时，Gestouch不起作用。

如何为新的starling实例重新启动gestouch

提示代码：

    gallery.addEventListener(MouseEvent.CLICK,book);

    onKeyDown(event:KeyboardEvent):void
    {
        if(event.keyCode == Keyboard.BACK )
        {
            event.preventDefault();
            event.stopImmediatePropagation();
            this.starling.stop();
            this.starling.dispose();
            this.starling = null;
        }
    }

    book(e:MouseEvent):void
    { 
        this.starling = new Starling(RacTestApp,stage,viewPort);
        Gestouch.inputAdapter ||= new NativeInputAdapter(stage);
        Gestouch.addDisplayListAdapter(starling.display.DisplayObject, new StarlingDisplayListAdapter());
        Gestouch.addTouchHitTester(new StarlingTouchHitTester(this.starling), -1);
        this.starling.start();
    }

谢谢