我不太了解ActionScript。如果这很简单，那么道歉。
我已经写了一个.as文件作为其中的一部分我需要能够使用.stop（）停止flash动画。
我尝试过几种不同的方法来实现这一点，其中一些方法可行 - 但是他们总是通过这个错误：
TypeError：错误＃1009：无法访问null的属性或方法 对象参考。在com.albionpreview :: looptimer / startFrame（）at test_fla :: MainTimeline /帧1（）
以下是我尝试的所有内容：
this.stop();
root.stop();
MovieClip(root).stop();
MainTimeLine(parent).stop();
MovieClip(parent).stop();
parent.stop();
DisplayObject(stage).stop();
MainTimeline(parent).stop();
Main(root).stop();
Object(root).stop();
this.stage.stop();
MovieClip(this).stop();
MovieClip(this.root).stop();
(root as MovieClip).stop();
必须有一些简单的尝试。有人可以帮忙吗？
如果有帮助，这是我的代码。
答案 0 :(得分：1)
在新图层上，我会创建一个新的movieClip，它将成为帧的容器并控制通过计时器停止。
只需绘制一个仅填充颜色（无边框）的框。相同宽度＆amp;作为舞台的高度，与Top＆amp;左（在修改 - ＆gt;与＆＃34对齐;对齐到舞台＆＃34;勾选）。它现在应该是舞台区域的完美契合，然后将其转换为movieClip（确保注册设置为顶部/左侧的黑点..不是居中的点）。
调用它你想要的，但给它animMC的实例名称（你可以稍后更改）。
现在选择动画帧的整个范围，然后选择＆＃34;剪切帧＆＃34;在右键菜单上。双击animMC movieClip进入其时间轴，删除框形状并右键单击第一帧，然后粘贴框架＃34;。
现在在你的代码中你可以像这样停止它：
package com.preview {
import flash.utils.Timer;
import flash.events.TimerEvent
import flash.utils.getTimer;
import flash.display.MovieClip;
public class looptimer extends MovieClip
{
var startTime:int = 0;
var allowedTime:int = 5000;
var loopTime:int = 0;
public function looptimer ()
{
var myTimer:Timer = new Timer(5000, 1); //count before doing function "timerListener" the 1 means do once else it will loop forever
myTimer.addEventListener(TimerEvent.TIMER, timerListener);
myTimer.start();
function timerListener (e:TimerEvent):void
{
trace("Timer countdown finished");
animMC.stop(); //anim stops
}
}
}
}
========================
您好此代码将检查您在动画结束时触发的事件。要让这样的事件进入包含框架的MC，并在最后一帧（和空白图层）上添加此动作代码:(这将是
的事情dispatchEvent(new Event("Banner_end)")); //end frame
这相当于获得你的＆＃34; end Frame＆＃34;。在下面的代码中，事件附加到此指令：
animMC.addEventListener（＆＃34; Banner_end＆＃34;，check_Time）;
意味着在到达结束帧时会发生一个名为＆＃34; Banner end＆＃34;从时间轴发送，这反过来执行check_Time函数和lso另一个函数（见代码）。
现在，下面的代码将检查时间以及＆＃34;结束帧＆＃34;调度事件并确定是否有足够的时间进行第二次循环或更多循环。两件事会影响MC循环的次数。首先是时间限制越长，你越循环，你将适应这个限制。第二个是动画MC的长度，如果较短的手段可以在时间限制内适应更多的循环。调整这两件事。最简单的是时间限制，只需更改数字（＆＃34; allowed_playing_Time＆＃34;）进行测试，但稍后当您无法控制限制时，则根据需要调整横幅（动画MC）帧，即添加/删除帧。
package com.preview
{
import flash.utils.*;
import flash.events.*;
import flash.utils.Timer;
import flash.events.TimerEvent;
import flash.utils.getTimer;
import flash.display.MovieClip;
import flash.events.Event;
public class looptimer extends MovieClip
{
var allowed_playing_Time:int = 10; //time limit in seconds
var play_Count:int = 0; //tracking number of times played
var can_play_Amount:int = 1; //total times can be played
var _startTime:Date;//Number;
var _endTime:Date;//Number;
//for time check using actual [computer] clock = more accurate than timer
var real_Time:Date;
var anim_start_time:int;
var anim_end_time:int;
var anim_play_length:int;
public function looptimer()
{
//starting the Banner
play_Banner_anim();
}
function play_Banner_anim():void
{
animMC.stop(); //set strating banner state as paused;
_startTime = real_Time = new Date();//Real Time value initial set here
trace("current time at START is: " + _startTime.minutes + " mins past and " + _startTime.seconds + " secs");
animMC.addEventListener("Banner_end", check_Time);
animMC.addEventListener("Banner_end", calculate_Replay);
anim_start_time = getTimer();
animMC.play();
}
function check_Time(e:Event):void
{
animMC.stop(); trace( "Banner has reached last frame");
animMC.removeEventListener("Banner_end", check_Time);
play_Count = play_Count + 1;
trace("Times banner has played / looped): " + play_Count);
_endTime = real_Time = new Date();//new update of Real Time value
trace("current time at END is: " + _endTime.minutes + " mins past and " + _endTime.seconds + " secs");
anim_end_time = getTimer();
anim_end_time = Math.ceil(anim_end_time);
anim_play_length = Math.round(Math.floor(anim_end_time - anim_start_time) / 1000);
anim_play_length = anim_play_length;
trace("checking if Real Time: ");
var date1:Date = _startTime;
var date2:Date = _endTime;
var elapsed1:Number = Date.UTC(date1.minutes,date1.seconds);
var elapsed2:Number = Date.UTC(date2.minutes,date2.seconds);
var playingTime:Number = Math.round( (elapsed2/1000) - (elapsed1/1000) );
trace ("time elasped (delta) is " + playingTime );
//check seconds elapsed in banner playback (i.e total play length)
trace("Banner total playing length was " + anim_play_length + " seconds");
//so how many times can banner play within allowed time limit?
var can_fit_Num:Number = allowed_playing_Time / anim_play_length;
trace("can fit this many plays in allowed time limit: " + can_fit_Num);
can_play_Amount = can_fit_Num;
trace("can_play_Amount is : " + can_play_Amount);
if (can_play_Amount <= 0)
{
trace("Warning: Banner Anim is either longer than allowed time limit or has a play length of zero");
}
}
function calculate_Replay(e:Event):void
{
trace("Calculating replay function :::::: ");
trace("Play/looped amount is: " + play_Count);
trace("Can play amount times is : " + can_play_Amount);
if (play_Count < can_play_Amount)
{
trace("anim_play_length is:" + anim_play_length);
replay_tings();
trace("replaying anim");
}
else
{
animMC.stop();
trace("reached replaying times (" + can_play_Amount + ") available within limit (" + allowed_playing_Time + " secs)");
if (can_play_Amount <= 0)
{ trace("Warning: Banner Anim is either longer than allowed time limit or has a play length of zero"); }
//do something else. Currently just stops since no time for replay
}
}
function replay_tings():void
{
animMC.addEventListener("Banner_end", calculate_Replay);
animMC.play();
play_Count = play_Count + 1;
trace("Play Count/loops: " + play_Count);
}
}
}
希望它有所帮助。我提出了许多痕迹只是为了给你反馈。删除任何您认为不必要的内容，当然，如果发现某些内容，您可以优化代码。