Question

我是否知道如何解决在需要将.as文件导入main.mxml文件时发生的错误？ .as文件使用stagevideo函数，输出显示在AIR窗口中。我可以知道我错过了哪一部分吗？谢谢，如果有人能帮助我，我感谢你。谢谢

    <fx:Script>
    <![CDATA[
        import flash.display.StageDisplayState;
        import flash.events.KeyboardEvent;
        import flash.ui.Keyboard;

        import mx.events.FlexEvent;

        import Video.SimpleVid;

        public var simpleVid:SimpleVid;

        protected function init():void
        {       
            simpleVid = new SimpleVid();
            addElement(simpleVid);
            stage.addEventListener(KeyboardEvent.KEY_DOWN,onKeyDown);
        }

        public function onKeyDown(event:KeyboardEvent):void
        {
            if(event.keyCode == Keyboard.O)
            {
                if(simpleVid.available)
                    simpleVid.toggleStageVideo(simpleVid.inited=!simpleVid.inited);
            }
            else if ( event.keyCode == Keyboard.F )
            {
                simpleVid.stage.displayState = StageDisplayState.FULL_SCREEN_INTERACTIVE;
            } 
            else if ( event.keyCode == Keyboard.SPACE )
            {
                simpleVid.ns.togglePause();
            }
            else if(event.keyCode == Keyboard.H)
            {
                var  matrix:Matrix =simpleVid.stage.transform.matrix;

                matrix.scale(-1,1);

                matrix.translate(stage.width,0);

                simpleVid.stage.transform.matrix=matrix;        
            }   
            else if(event.keyCode == Keyboard.R)
            {
                simpleVid.ns.resume();

            }

        }

    ]]>
</fx:Script>

错误显示stage.addEventListener（keyboardEvent.KEY_DOWN，onKeyDown）; simpleVid是simpleVid.as文件的名称，我将其导入main.mxml文件。

<s:WindowedApplication xmlns:fx="http://ns.adobe.com/mxml/2009" 
                   xmlns:s="library://ns.adobe.com/flex/spark" 
                   xmlns:mx="library://ns.adobe.com/flex/mx"
                   xmlns:Video = "Video.*"
                   backgroundAlpha="0"
                   creationComplete="init()"
                   backgroundColor="#000000">

Answer 1

你可以通过使用获得舞台 systemManager.stage.addEventListener(KeyboardEvent.KEY_DOWN,onKeyDown);

Flex：如何解决错误＃1009：无法访问空对象引用的属性或方法

1 个答案: