在应用程序启动/初始化之前在 flex 中加载 xml 文件 [英] Load xml file in flex before application start/initialises

问题描述

我有一个配置 xml 文件，我需要在 flex 应用程序加载之前解析它的值.

I've got a configuration xml file that I need to parse for values before a flex application laods.

我创建了一个静态类，允许检索 xml 配置文件中的值.

I've created a static class that allows for the values in the xml config file to be retrieved.

我在应用程序第一次加载时初始化这个类，但是当 xml 文件加载了一个同步加载的 Loader 类时，在实际加载 xml 文件之前要求类提供值 - 所以它抛出一个错误.

I'm initialising this class when the application first loads but as the xml file is loaded with a Loader class that loads a synchronously the class is being asked for values before the xml file is actually loaded - so it is throwing a error.

有没有办法同步加载这个 xml 文件，或者有人可以建议解决这个问题吗?我们不能将文件作为类变量嵌入，因为我们需要能够远程更改这些值.

Is there a way to load this xml file synchronously or can anyone suggest a work around to this? We cannot embed the file as a class variable as we need to be able to change the values remotely.

推荐答案

您需要覆盖设置的初始化函数.

You'll want to override the set initialized function.

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

        <mx:Script>
            <![CDATA[

                private function preInitHandler (event : Event) : void
                {
                   //load the xml, add the xmlCompleteHandler as a listener
                }

                private function xmlCompleteHandler (event : Event) : void
                {
                    //handle the xml
                    super.initialized = true;
                }

                override public function set initialized (value : Boolean) :
                    void
                {
                    // don't do anything, so we wait until the xml loads
                }

            ]]>
        </mx:Script>

    </mx:Application>

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