Question

我有一个功能，我想要删除EventListener，但它给了我以下错误：

Access of undefined property event

以下是相关代码：

dr_line.addEventListener(MouseEvent.CLICK,drawln);
var test:Boolean;

function drawln(e:MouseEvent):void{
    event.currentTarget.removeEventListener(MouseEvent.CLICK, drawln);
    stage.addEventListener(MouseEvent.CLICK,click1);    
}

var sx,sy,fx,fy,j:int;

function click1(e:MouseEvent):void{
    sx=mouseX;
    sy=mouseY;
    stage.addEventListener(MouseEvent.CLICK,click2);
}

function click2(e:MouseEvent):void{
    var i:int;
    i=1;
    trace(i);
    fx=mouseX;
    fy=mouseY;
    var  line:Shape = new Shape();
    line.graphics.beginFill(0x00FF00);
    line.graphics.moveTo(sx,sy);
    line.graphics.lineTo(fx,fy);
    this.addChild(line);
}

我尝试在click1和click2中删除事件监听器，但它仍然无法正常工作。

我做错了什么？

Answer 1

未宣布

事件; e是。尝试更改此内容：

function drawln(e:MouseEvent):void{
    event.currentTarget.removeEventListener(MouseEvent.CLICK, drawln);
    stage.addEventListener(MouseEvent.CLICK,click1);    
}

到此：

function drawln(e:MouseEvent):void{
    e.currentTarget.removeEventListener(MouseEvent.CLICK, drawln);
    stage.addEventListener(MouseEvent.CLICK,click1);    
}

甚至可能是这样：

function drawln(e:MouseEvent):void{
    dr_line.removeEventListener(MouseEvent.CLICK, drawln);
    stage.addEventListener(MouseEvent.CLICK,click1);    
}

删除Actionscript中的事件监听器3

1 个答案: