无法在 AS3 中更改动态文本
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【中文标题】无法在 AS3 中更改动态文本【英文标题】：Can't get dynamic text to change in AS3 【发布时间】：2017-09-17 19:10:51 【问题描述】：这里是整个项目的链接，包括所有依赖项（如果需要）。 https://www.dropbox.com/sh/3d3towtkhb4c38r/AADdxDJq9ix7bK9hTkt_VTSAa?dl=0
基本上是在尝试清理一些我需要处理的脚本，并且一直在努力思考为什么这不起作用。我没有收到任何调试错误，一切似乎都链接到了需要链接的地方。我的字体似乎是嵌入的，我所有的实例名称似乎都是正确的......我唯一能想到的是我在代码中遗漏了一些愚蠢的东西。任何帮助将非常感激！没有什么比被弄得一团糟并且不得不修复它更喜欢的了。
基本上，文本框应该有一个基于即将到来的比赛的倒计时计时器（例如，比赛 X 在 xxx 分钟后），如果没有比赛临近，它应该显示一些默认文本。目前，它似乎根本不想更改动态文本！
编辑：我还要提到包含文本的 RaceRibbon Movieclip 也为 as3 导出到 com.RaceRibbon 类。
package
import flash.display.MovieClip;
import flash.events.TimerEvent;
import flash.ui.Mouse;
import flash.utils.Timer;
import com.boo.CustomDate;
import com.boo.ScreensaverSimple;
import com.RaceRibbon;
// This sections is for the image slides and Hour Of Power setting.
public class Generic extends MovieClip
// This is where you can set the Hour of Power time start and end time (in 24 hour format e.g. 1330 for 1:30pm)
// If there is no hour of power, simply set both numbers to 0
private var HourOfPowerStartTime:Number = 0;
private var HourOfPowerEndTime:Number = 0;
private var HourOfPower1StartTime:Number = 0;
private var HourOfPower1EndTime:Number = 0;
public var race_ribbon:RaceRibbon;
private var ss:ScreensaverSimple;
public var time_check_timer:Timer;
public var is_race_time:Boolean;
public var current_state:String;
public var next_race:Date;
public var race_time_arr:Array;
public var race_num:int;
private var ss_time_arr:Array;
private var delay_add_timer:Timer;
//Set default text
private var default_ribbon_text:String = "THERACES.COM.AU";
// Set Race Times
private var r1:Date = new Date(2017,5,5,12,15);
private var r2:Date = new Date(2017,5,5,12,50);
private var r3:Date = new Date(2017,5,5,13,25);
private var r4:Date = new Date(2017,5,5,14,00);
private var r5:Date = new Date(2017,5,5,14,35);
private var r6:Date = new Date(2017,5,5,15,15);
private var r7:Date = new Date(2017,5,5,15,55);
private var r8:Date = new Date(2017,5,5,16,35);
private var r9:Date = new Date(2017,5,5,17,15);
// Hide the mouse
public function Generic()
Mouse.hide();
// Set Race Ribbon
race_ribbon = new RaceRibbon;
race_ribbon.x = 1109;
race_ribbon.y = 983;
race_time_arr = [r1,r2,r3,r4,r5,r6,r7,r8,r9];
// Display Slideshow
ss = new ScreensaverSimple;
ss.setScreensaver(screens);
// Make sure Hour of Power is not visible
HOP1.visible = false;
HOP2.visible = false;
time_check_timer = new Timer(1000);
time_check_timer.addEventListener(TimerEvent.TIMER, checkTime);
delay_add_timer = new Timer(1,1);
delay_add_timer.addEventListener(TimerEvent.TIMER, addAllChildren);
delay_add_timer.start();
public function addAllChildren(evt:TimerEvent=null):void
delay_add_timer.removeEventListener(TimerEvent.TIMER, addAllChildren);
delay_add_timer.stop();
delay_add_timer = null;
addChild(race_ribbon);
time_check_timer.start();
checkTime();
public function checkTime(evt:TimerEvent=null):void
setDatesToCurrent(race_time_arr);// This makes every day race day
setDatesToCurrent(ss_time_arr);// This makes all screensaver dates current
checkNextRace();
if(next_race != null && is_race_time == false)// If it isn't race time
setCountdown();
if(next_race == null && is_race_time == true)// If it's race time
setDefaultText();
checkHOP1();
checkHOP2();
//Call to make Hour Of Power 1 visible/invisible based on set times
private function checkHOP1():void
HOP1.visible = (HourOfPowerStartTime || HourOfPowerEndTime);
if (!HOP1.visible) return;
var CurrentTime:Number = CustomDate.return24HourNumber();
HOP1.visible = (CurrentTime >= HourOfPowerStartTime && CurrentTime <= HourOfPowerEndTime);
//Call to make Hour Of Power 2 visible/invisible based on set times
private function checkHOP2():void
HOP2.visible = (HourOfPower1StartTime || HourOfPower1EndTime);
if (!HOP2.visible) return;
var CurrentTime:Number = CustomDate.return24HourNumber();
HOP2.visible = (CurrentTime >= HourOfPower1StartTime && CurrentTime <= HourOfPower1EndTime);
public function setDatesToCurrent(arr:Array):void // This makes every day race day
var cd:Date = new Date();// Current Date
for(var i:int=0;i<arr.length;i++)
arr[i].fullYear = cd.fullYear;
arr[i].month = cd.month;
arr[i].date = cd.date;
public function checkNextRace():void
var ct:Date = new Date();// Current Time as a Date
next_race = null;
is_race_time = false;
// FOR LOOP THIS... one day
if(ct < r1)
next_race = r1;
else if(raceTimeSpan(r1) == true)
is_race_time = true;
race_num = 1;
else if(ct > raceTimeSpan(r1) && ct < r2)
next_race = r2;
else if(raceTimeSpan(r2) == true)
is_race_time = true;
race_num = 2;
else if(ct > raceTimeSpan(r2) && ct < r3)
next_race = r3;
else if(raceTimeSpan(r3) == true)
is_race_time = true;
race_num = 3;
else if(ct > raceTimeSpan(r3) && ct < r4)
next_race = r4;
else if(raceTimeSpan(r4) == true)
is_race_time = true;
race_num = 4;
else if(ct > raceTimeSpan(r4) && ct < r5)
next_race = r5;
else if(raceTimeSpan(r5) == true)
is_race_time = true;
race_num = 5;
else if(ct > raceTimeSpan(r5) && ct < r6)
next_race = r6;
else if(raceTimeSpan(r6) == true)
is_race_time = true;
race_num = 6;
else if(ct > raceTimeSpan(r6) && ct < r7)
next_race = r7;
else if(raceTimeSpan(r7) == true)
is_race_time = true;
race_num = 7;
else if(ct > raceTimeSpan(r7) && ct < r8)
next_race = r8;
else if(raceTimeSpan(r8) == true)
is_race_time = true;
race_num = 8;
else if(ct > raceTimeSpan(r8) && ct < r9)
next_race = r9;
else if(raceTimeSpan(r9) == true)
is_race_time = true;
race_num = 9;
else if(ct > raceTimeSpan(r9)) // If all races are finished
setDefaultText();
public function raceTimeSpan(d:Date):Boolean
var race_mins:int = 2;
var race_on:Boolean = false;
var ct:Date = new Date();
if(ct.hours == d.hours)
var max_mins:int = d.minutes + race_mins;
if(ct.minutes >= d.minutes && ct.minutes < max_mins)
race_on = true;
return race_on;
public function setCountdown():void
var hours_left:int = int(String(CustomDate.countdownTime(next_race)).split(":")[0]);
var mins_left:int = int(String(CustomDate.countdownTime(next_race)).split(":")[1]);
mins_left = (60*hours_left)+mins_left;
is_race_time = false;
if(mins_left > 2)
race_ribbon.setText("NEXT RACE IN <font color='#000000' letterspacing='-1'>"+(mins_left+1)+" MINUTES</font>");
race_ribbon.setBG(0);
else if(mins_left < 3)
if((mins_left+1) <= 1)
race_ribbon.setText("NEXT RACE IN <font color='#fdb913' letterspacing='-1'>"+(mins_left+1)+" MINUTE</font>");
else
race_ribbon.setText("NEXT RACE IN <font color='#fdb913' letterspacing='-1'>"+(mins_left+1)+" MINUTES</font>");
race_ribbon.setBG(1);
public function setDefaultText():void
race_ribbon.setText("<font color='#fdb913' letterspacing='-1'>"+default_ribbon_text+"</font>");
race_ribbon.setBG(1);
如果您不想单独浏览文件，com.RaceRibbon 代码是
package com
import flash.display.MovieClip;
import fl.motion.Color;
import flash.display.Sprite;
import flash.text.*;
public class RaceRibbon extends MovieClip
private var c1:Color;
private var c2:Color;
public function RaceRibbon()
c1 = new Color();
c1.setTint(0xfdb913,1);
c2 = new Color();
c2.setTint(0x000000,1);
public function setText(str:String=""):void
str = str.toUpperCase();
this.tb.htmlText = str;
public function setBG(p:int=0):void
switch(p)
case 0:
bg.transform.colorTransform = c1;
break;
case 1:
bg.transform.colorTransform = c2;
break;
【问题讨论】：
只是一个疯狂的猜测，功能区的 (x,y) 是 ~ (1100,980)，它在屏幕外（除非它是无比例的全屏）。 文件是 1920x1080 所以除非我弄错了（我很高兴弄错了，如果我没记错的话，应该是右下角？功能区本身正在显示（包含文本的电影剪辑），文本只是没有被修改。 好吧，我没有看到 tb 声明或创建，所以有很多可能性。现在我建议在 RaceRibbon 构造函数中使用 trace(describeType(this));，并使用他们的 name 跟踪所有孩子的列表属性和 getQualifiedClassName(...) 以了解它们所属的确切类。 当我尝试追踪时，我得到以下代码。 tb 已经在时间表上，所以除非我弄错了，否则不需要其他任何东西？TypeError: Error #1009: Cannot access a property or method of a null object reference. at Generic/setDatesToCurrent() at Generic/checkTime() at Generic/addAllChildren() at flash.utils::Timer/_timerDispatch() at flash.utils::Timer/tick()
文件 > 发布设置 > 允许调试以了解出现该错误的行号。关于“不应该需要其他任何东西”：您可能有重复项、错误的对象类型或其他内容。基本上，在类中故意将其声明为 public var tb:TextField; 不会造成伤害，并且是使用设计实例的一般良好实践。
【参考方案1】：
我没有机会测试您的项目文件，只是对消除的建议：
要么手动触发setDefaultText();，要么直接针对RaceRibbon 的文本字段（因此只需将// 注释掉您未从显示的3 行代码中测试的另外两个）。
如果下面的任何Update test 可以正常更新文本，那么您真正的问题在于：
function setCountdown():(if(mins_left > 2) 之前trace ("minutes left: " + mins_left); 说的金额是什么？看起来它可能会变成> 2 或< 3 或+1 <= 1？如果不是，那么你的文本也不会更新。）
或function checkNextRace()（特别是如果你设置next_race = null;，那么在next_race = r1;之后肯定会给出一个调试器错误，如“无法将值设置为NULL（不存在）的变量” 但你说你没有错误，所以我很困惑为什么我会这样做。（使用ctrl+shift_+enter 来调试不是Test Movie 选项）。
反正代码...
public function Generic()
Mouse.hide();
// Set Race Ribbon
race_ribbon = new RaceRibbon;
race_ribbon.x = 1109; race_ribbon.y = 983;
// Update test #1
setDefaultText(); //did via Function work?
// Update test #2
race_ribbon.tb.htmlText = "testing123"; //did via Direct Targeting work?
race_ribbon.tb.htmlText = "<font color='#fdb913' letterspacing='-1'>" + "testing123" + "</font>"; //maybe works with HTML?
// Temp disable other code for above elimination tests
/*
race_time_arr = [r1,r2,r3,r4,r5,r6,r7,r8,r9];
// Display Slideshow
ss = new ScreensaverSimple; ss.setScreensaver(screens);
// Make sure Hour of Power is not visible
HOP1.visible = false; HOP2.visible = false;
time_check_timer = new Timer(1000);
time_check_timer.addEventListener(TimerEvent.TIMER, checkTime);
delay_add_timer = new Timer(1,1);
delay_add_timer.addEventListener(TimerEvent.TIMER, addAllChildren);
delay_add_timer.start();
*/
【讨论】：
好的...所以调试控制台将我带到了我认为没有做任何事情的代码行（它不是...除了破坏所有后续代码！！！）我尝试了其他代码，它实际上使丝带消失了！当我删除这些行时，一切都恢复了并开始工作。我觉得自己真的很愚蠢，因为我应该先这样做，我想我以为我做到了，再也没有检查过，但是你让我回到了正轨，让我摆脱了很多麻烦！！！再次感谢您！以上是关于无法在 AS3 中更改动态文本的主要内容，如果未能解决你的问题，请参考以下文章