Flex 3 中的 XML 和 XMLList 和 XMLListCollection [英] XML and XMLList and XMLListCollection in Flex 3

问题描述

请解释一下 XML 与 XMLList 和 XMLListCollection 之间的区别.如果可能的话，用简单的话举例.提前致谢.

Please explain me what is the difference between XML and XMLList and XMLListCollection. If possible in simple words with example. Thanks in advance.

推荐答案

首先，链接到 Flex 3 语言参考 - 必须有书签才能查找这些内容.

First, links to Flex 3 Language Reference - a must have bookmark for looking this stuff up.

http://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/index.html

XML

XMLList

XMLListCollection

其次，我会说检查 XMLList 的 Examples 链接，因为它提供了一个很好的 XML 和 XMLList 差异之间的工作示例.

Secondly, I'd say check the Examples link for XMLList as that gives a good working example between the difference of XML and XMLList.

当您想使用 XML 文档的值创建变量时，请使用 XML.

Use XML when you want to create a variable with a value of an XML document.

var mybooks:XML = <books>
  <book>
    <title>Book1</title>
  </book>
  <book>
     <title>Book2</title>
  </book>
</books>;

使用 XMLList 从 XML 变量创建数据子集.

Use XMLList to create subsets of data from an XML variable.

var mybookTitles:XMLList = mybooks.title;  

最后，XMLListCollection 类基本上是一个辅助类，用于获取您的 XML 或 XMLList 对象并在控件中使用它.

Finally, an XMLListCollection class is basically a helper class for taking your XML or XMLList object and using it in a control.

从 mx.core.Repeater 文档中的 dataProvider 属性中获取此代码段

Take this snippet from mx.core.Repeater docs on its dataProvider property

If you set it to an XML or XMLList, it is converted into an XMLListCollection.

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