Question

这是简单的代码，但我无法解决.. 我点击a.button，所以计时器运行，但如果我点击b.button，计时器仍在运行。如何阻止这个计时器？谢谢（对不起，我的英文不好）

    a.addEventListener(MouseEvent.CLICK, starts);
    function starts(e:MouseEvent)
    {
            time(0);
    }
    b.addEventListener(MouseEvent.CLICK, stops);
    function stops(e:MouseEvent)
    {
            time(1);
    }
    function time(cc)
    {
        var timer:Timer = new Timer(1000,100);
        timer.addEventListener(TimerEvent.TIMER, tmer);
        timer.start();
        function tmer(e:TimerEvent):void
        {
            trace("start");
        }
        if(cc == 1)
        {
            trace("stop");
            timer.stop();
            timer.removeEventListener(TimerEvent.TIMER, tmer);
        }
        cc=0;
    }

Answer 1

尝试这个：

a.addEventListener(MouseEvent.CLICK, starts);
function starts(e:MouseEvent)
{
    time(0);
}
b.addEventListener(MouseEvent.CLICK, stops);
function stops(e:MouseEvent)
{
    time(1);
}

var timer:Timer;
function time(cc:int)
{
    if(cc == 0)
    {
        if(!timer)
            timer = new Timer(1000,100);        
        timer.addEventListener(TimerEvent.TIMER, tmer);
        timer.start();
    }   
    else if (cc == 1)
    {
        trace("stop");
        timer.stop();
        timer.removeEventListener(TimerEvent.TIMER, tmer);
    }
}

function tmer(e:TimerEvent):void
{
    trace("start");
}

Answer 2

请改为尝试：

var timer:Timer = new Timer(1000,100);

// To verify if timer is running or stopping
timer.addEventListener(TimerEvent.TIMER, tickTock);
function tickTock(e:TimerEvent):void
{
    trace("tick tock");
}

a.addEventListener(MouseEvent.CLICK, starts);
function starts(e:MouseEvent)
{
        time(0);
}

b.addEventListener(MouseEvent.CLICK, stops);
function stops(e:MouseEvent)
{
        time(1);
}

function time(cc)
{
    if(cc == 0)
    {
        trace("start");
        timer.start();
    }
    else if(cc == 1)
    {
        trace("stop");
        timer.stop();
    }
}

或者简单地说：

var timer:Timer = new Timer(1000,100);

// To verify if timer is running or stopping
timer.addEventListener(TimerEvent.TIMER, tickTock);
function tickTock(e:TimerEvent):void
{
    trace("tick tock");
}

a.addEventListener(MouseEvent.CLICK, starts);
function starts(e:MouseEvent)
{
        trace("start");
        timer.start();
}

b.addEventListener(MouseEvent.CLICK, stops);
function stops(e:MouseEvent)
{
        trace("stop");
        timer.stop();
}

Answer 3

这是因为第二次创建新的Timer对象。

var timer:Timer = new Timer(1000,1000);
function tmer(event:TimerEvent):void{
     trace("The timer is working");
}
timer.addEventListener(TimerEvent.TIMER, tmer);
timer.stop();
 a.addEventListener(MouseEvent.CLICK, starts);
    function starts(e:MouseEvent)
    {
            timer.reset();
            timer.start();
    }
    b.addEventListener(MouseEvent.CLICK, stops);
    function stops(e:MouseEvent)
    {
            timer.stop();
    }

无法停止定时器AS3

3 个答案: