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使用 actionscript 3 在帧之间传递变量

发布于 2024-09-30 00:30:16 字数 258 浏览 1 评论 0原文

我是 Actionscript 3.0 的新手，在尝试将在第 1 帧中创建和设置的变量传递到添加到第 4 帧中的舞台的动态文本框时遇到困难。

在第 1 帧上，变量是根据输入的信息设置的由用户： var input_dia = ""; input_dia = pdia_input.text;

并且应该显示在第 4 帧的动态文本框中： dia_alert.text=input_dia;

我收到以下错误： 1120: 访问未定义的属性 input_dia。

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为你鎻心 2024-10-07 00:30:16

你必须想象 - 不同的场景很像单独的电影，而 Flash 很难在它们之间共享。

正确的方法是开始使用AS3的OOP（面向对象编程）。
您将需要创建称为文档类的东西。这是有效的代码，永远存在于幕后（没有双关语的意思）。您可以将内容存储在此类中，并在以后随时阅读。

它比听起来更容易，一旦设置完毕 - 它将允许您开始将代码移出时间线。

首先创建一个名为“DocumentClass.as”的文件，这实际上可以被称为任何名称，但这样称呼它是非常好的做法。

将此文件保存在与您正在使用的 FLA 相同的位置 - 同一文件夹。

在 CS3 中 - 在屏幕底部的属性面板中 - 当您选择了阶段时，将会出现一个小框，允许您在其中键入文档类的名称。输入您刚刚创建的文件名“DocumentClass”*，不带“.as”扩展名 - 如果您不确定需要在哪里输入，请单击链接。

http://curtismorley.com/wp-content/uploads/2007/07 /documentclasspath_bad.JPG

请注意大小写 - 这是一个很好的做法

在 Flash 中打开此文件并编写以下代码。正如我所写的

DocumentClass.as，

package {

  //Call this class the SAME NAME as the file - VERY IMPORTANT
  class DocumentClass extends MovieClip
  {

    //This is an example of a variable - a container
    //of information of which is public - and can be 
    //seen by all the scenes in your flash movie.
    public var myName:String = "Jay Jagpal";

    //This is called a construct - this function automatically
    //runs when this class is seen by flash.
    public function DocumentClass()
    {
      //nothing needs to go here for you today...
    }
  }

}

您可以在我为您编写的所有内容中看到我有一个名为 myName 的变量 - 您可以创建您想要的内容 - myAge...textToBeInAllScenes...girlfriendsWeightToday。 .. 打电话然后就可以了。

进一步说明

类是需要时在内存中创建的代码块。 DocumentClass 就是这样的 - 但它始终存在于应用程序的生命周期中。

一个包 - 只是很奇特的as3，意思是“把这些东西放在一个盒子里” - 它可以变得更先进，但这就是要点。

class DocumentClass extends MovieClip - 您告诉 flash“我的类称为 DocumentClass” - 这扩展了称为 MovieClip 的东西。

MovieClip 是一个类，与您的类完全一样 - 但为您设计并存在于 flash 中。其中包含大量使动画正常工作的代码。您的 Flash 场景本身只是此 MovieClip 事物的可见版本。

你必须扩展这个类，因为你非常想[以一种假的方式]复制粘贴所有完成的代码并在你的DocumentClass中使用它。您现在正在扩展 MovieClip，通过这样做，您的代码将堆积在现有的内容之上。

public function DocumentClass() - 是的，这是一个函数。但它被称为“构造”。它是一种特殊类型的函数，存在于类中。首先它有相同的名字。这使得 Flash 能够很容易地找到它。它的特殊工作是当此类在 Flash 中创建并可见时立即开始自动运行其代码。所有自动查看...

对您来说重要的部分是我添加的 public var 。这是一个可以存储信息的存储桶。

public 部分告诉 flash，任何人都可以看到它（如果他们愿意）、场景、其他类...街上的人 - 任何东西！

变量（或存储桶）名称后面的 :string 告诉 flash 变量中将存储什么类型的信息。这对应用程序破坏并不重要——但是为了好的 OOP 代码——就这样做。（google AS3变量转换）

有很多var类型，String，Number，int，Boolean等等...大约7个基本的。

我认为这对于 StackOverflow 来说已经足够了 - 它会起作用 -

被警告 大多数错误都是你的拼写错误... Flash 不喜欢拼写错误。

享受！

You have to imagine - the different scenes are a lot like separate movies and flash has trouble sharing between them.

The correct way to do it - is begin to use the OOP (object orientated programming) of AS3.
You will need to create something called a document class. This is effectively code that lives forever behind the scenes (no pun intended). You can store stuff in this class and read them later on whenever you please.

Its easier than it sounds and once set up - it'll allow you to start moving the code off your timeline.

First create a file called "DocumentClass.as" This can really be called anything, but calling it this is very good practice.

Save this file in the same place as the FLA you're working with - the same folder.

In CS3 - In the properties panel at the bottom of your screen - when you have the stage selected there will be a little box allowing you to type the name of the document class into it. Type the name of the file you just made 'DocumentClass' *without the '.as' extension - click on the link if you're unsure where it is you need to type.

http://curtismorley.com/wp-content/uploads/2007/07/documentclasspath_bad.JPG

Please note the capitlization - this is good practice

Open this file in Flash and write the following code. Exactly as I write it

DocumentClass.as

package {

  //Call this class the SAME NAME as the file - VERY IMPORTANT
  class DocumentClass extends MovieClip
  {

    //This is an example of a variable - a container
    //of information of which is public - and can be 
    //seen by all the scenes in your flash movie.
    public var myName:String = "Jay Jagpal";

    //This is called a construct - this function automatically
    //runs when this class is seen by flash.
    public function DocumentClass()
    {
      //nothing needs to go here for you today...
    }
  }

}

You can see inside all the guff I write for you I have a variable called myName - You can create what you want - myAge... textToBeInAllScenes... girlfriendsWeightToday... Call then anything.

Further Explination

A class is a block of code that is created in memory when needed. A DocumentClass is this - but lives all the way through the life of your application.

A package - is just fancy as3 speak for 'put this stuff in a box' - it can get more advanced but thats the jist.

class DocumentClass extends MovieClip - You're telling flash "my class is called DocumentClass" - this extends something called a MovieClip.

The MovieClip is a class, exactly like yours - but made for you and lives inside flash. This contains lots of code to make animations work. Your Flash scene itself is just a visible version of this MovieClip thing.

you have to extend this class, because you pretty much want to [in a fake way] copy paste all the finished code and use it in your DocumentClass. You're now extending MovieClip and by doing so, your code is piled on top of already existing stuff.

public function DocumentClass() - yes this is a function. But its called a 'construct'. Its a special type of function that lives inside a class. Firstly it has the same name. This allows Flash to find it really easily. Its special job is to instantly start running its code automatically when this class is made and seen in flash. All automatic see...

The important part for you is the public var I added. This is a bucket you can store your information in.

The public part tells flash, anything can see it if they want to, scenes, other classes... people in the street - Anything!

The :string after your variable (or bucket) name, it telling flash what type of information will be stored inside the var. This isn't app breaking important - but for good OOP code - do it. (google AS3 variable casting)

There are many var types, String, Number, int, Boolean and so one... roughly about 7 basic.

I think thats enough of an answer for StackOverflow - it will work -

be warned Most errors are your spelling errors... Flash don't like spelling errors.

Enjoy!

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