Question

我复制了一个对象以在另一个框架中使用它（该对象使用Greensock滚动X轴，我使用了一个函数（onMove（evt：MouseEvent））但是当我移动鼠标时出现这个错误在输出选项卡TypeError: Error #1009: Cannot access a property or method of a null object reference. at Main_fla::mainContianer_1/onMove()中，当我按其中一个按钮输入新对象时，此错误出现TypeError: Error #1009: Cannot access a property or method of a null object reference. at com.greensock::TweenLite/init() at com.greensock::TweenLite/renderTime() at com.greensock.core::SimpleTimeline/renderTime() at com.greensock::TweenLite$/updateAll()并且旧对象出现

这是我原来的行为

import com.greensock.TweenLite;
import com.greensock.easing.Back;
import com.greensock.easing.Elastic;
import com.greensock.plugins.TweenPlugin;
import com.greensock.plugins.BlurFilterPlugin;

var panelContainer:Sprite = new Sprite;
addChild(panelContainer);

for(var i:Number=0;i<3; i++) {

    var projectPanel:ProjectPanel = new ProjectPanel;
    projectPanel.x = i*(projectPanel.width+10);
    panelContainer.addChild(projectPanel);

    projectPanel.addEventListener(MouseEvent.CLICK, onClick);

}

function onClick(evt:MouseEvent):void {

    TweenLite.to(panelContainer, 0.5, {y:stage.stageHeight, ease:Back.easeIn});
    MovieClip(this.parent).addFullPanel(Number(evt.currentTarget.name));

}

function slideUp():void {

    TweenLite.to(panelContainer, 0.5, {y:0, ease:Back.easeOut});

}

stage.addEventListener(MouseEvent.MOUSE_MOVE, onMove);

function onMove(evt:MouseEvent):void {

    if(MovieClip(this.parent).fullProjectPanelUp==false){
    TweenLite.to(panelContainer,0.3, {x:-        (stage.mouseX/1225)*panelContainer.width+stage.stageWidth/2.65});
    }

}

stop();

和新人的行动：

import com.greensock.TweenLite;
import com.greensock.easing.Back;
import com.greensock.easing.Elastic;
import com.greensock.plugins.TweenPlugin;
import com.greensock.plugins.BlurFilterPlugin;

var lessonContainer:Sprite = new Sprite;
addChild(lessonContainer);

for(var p:Number=0;p<8; p++) {

    var lessonPanel:LessonPanel = new LessonPanel;
    lessonPanel.x = p*(lessonPanel.width+10);
    lessonContainer.addChild(lessonPanel);

    lessonPanel.addEventListener(MouseEvent.CLICK, onClick);

}

function onClickLesson(evt:MouseEvent):void {

    TweenLite.to(lessonContainer, 0.5, {y:stage.stageHeight, ease:Back.easeIn});
    MovieClip(this.parent).addfullLessonPanel(Number(evt.currentTarget.name));

}

function slideLessonUp():void {

    TweenLite.to(lessonContainer, 0.5, {y:0, ease:Back.easeOut});

}

stage.addEventListener(MouseEvent.MOUSE_MOVE, onMove);

function onLessonMove(evt:MouseEvent):void {

    if(MovieClip(this.parent).fullLessonPanelUp==false){
    TweenLite.to(lessonContainer,0.3, {x:-(stage.mouseX/1225)*lessonContainer.width+stage.stageWidth/2.65});
    }

}

stop();

如果你需要它们，这里是Project Files

Answer 1

如果没有激活FrameLabelPlugin，TweenLite就会像你试图填补mc.frameLabel属性一样（并且没有这样的东西）。

激活插件需要一行代码，您只需在应用程序中执行ONCE，因此非常简单。只需将包含您要激活的所有插件名称的数组传递给TweenPlugin.activate（）方法，如下所示：

import com.greensock.plugins.*;
TweenPlugin.activate([FrameLabelPlugin, ColorTransformPlugin]);

as3 - TypeError：错误＃1009：无法访问空对象引用的属性或方法

1 个答案: