Flex 3相当于'< fx：声明>'？ [英] Flex 3 equivalent of '<fx:Declarations>'?

问题描述

我试图将Flex 4项目向后迁移到Flex 3，并且需要将其映射到MXML中的< fx：Declarations> 块中。 Flex 3是否有类似的东西？ Flex 3中已经有一段时间了。

解决方案

在Flex 3中没有等价的东西。你的其他组件。 Flex 4中的差异将视觉和非视觉项目（包括效果，验证器，格式化器，数据声明和RPC类）更清晰。

例如，在Flex 4中，您可以这样做：

 <？xml version =1.0encoding =utf-8？> 
  xmlns：fx =http://ns.adobe.com/mxml/2009
 xmlns：s =library：//ns.adobe.com / flex / spark
 xmlns：mx =library：//ns.adobe.com/flex/mx> 
 
< fx：声明> 
< fx：String> Hello，world！< / fx：String> 
< / fx：声明> 
 
 <！ - 组件定义 - > 
 
< / s：Application> 
  

但是在Flex 3中，您可以这样做：

 <？xml version =1.0encoding =utf-8？> 
  xmlns：mx =http://www.adobe.com/2006/mxml> 
 
< mx：String> blah< / mx：String> 
 
 <！ - 组件定义 - > 
 
< / mx：应用程序> 
  

然而，你可以定义你的变量和任何其他的声明（视觉与否）在Flex 3和4中分别为c $ c>< mx：Script> 或< fx：Script> 标记。 b
$ b

如果您遇到其他更改，请在Adobe网站上搜索从flex 3迁移到flex 4 ，查看您可能需要做的其他更改。

I'm trying to migrate a Flex 4 project backwards to Flex 3, and I need to move stuff mapped in a <fx:Declarations> block in MXML. Does Flex 3 have something similar to this? It's been a while since I've done Flex 3.

解决方案

There is no equivalent in Flex 3. You can declare things alongside your other components. The difference in Flex 4 makes the separation between visual and non-visual items (including things like effects, validators, formatters, data declarations, and RPC classes) clearer.

For example, in Flex 4 you would do this:

<?xml version="1.0" encoding="utf-8"?>
<s:Application
    xmlns:fx="http://ns.adobe.com/mxml/2009"
    xmlns:s="library://ns.adobe.com/flex/spark"
    xmlns:mx="library://ns.adobe.com/flex/mx">

    <fx:Declarations>
        <fx:String>Hello, world!</fx:String>
    </fx:Declarations>

    <!-- Component defintions -->

</s:Application>

but in Flex 3, you would do this:

<?xml version="1.0" encoding="utf-8"?>
<mx:Application
    xmlns:mx="http://www.adobe.com/2006/mxml">

    <mx:String>blah</mx:String>

    <!-- Component defintions -->

</mx:Application>

You can, however, define your variables and whatever other declarations (visual or not) within the <mx:Script> or <fx:Script> tag in Flex 3 and 4 respectively.

If you're stuck on other changes, search Adobe's website about migrating from flex 3 to flex 4 to see what other changes you may have to make.

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