在一个子窗口如何使用数据从主窗口？ [英] How do I use data from the main window in a sub-window?

问题描述

我刚刚开始工作使用Flex照片查看器型桌面AIR应用程序。从主窗口，我可以启动子窗口，但在这些子窗口，我似乎无法访问我收集在主窗口中的数据。

I've just started working on a photo viewer type desktop AIR app with Flex. From the main window I can launch sub-windows, but in these sub-windows I can't seem to access the data I collected in the main window.

我怎样才能访问这些数据？
或者，我怎么能将此数据发送到创建的子窗口？它并不需要被动态地链接

How can I access this data?
Or, how can I send this data to the sub-window on creation? It doesn't need to be dynamically linked.

myMain.mxml

myMain.mxml

    <?xml version="1.0" encoding="utf-8"?>
<s:WindowedApplication xmlns:fx="http://ns.adobe.com/mxml/2009"
                       xmlns:s="library://ns.adobe.com/flex/spark"
                       xmlns:mx="library://ns.adobe.com/flex/mx"
                       width="260" height="200"
                       title="myMain">
    <fx:Declarations>
    </fx:Declarations>
    <fx:Script>
        <![CDATA[
            public function openWin():void {
                new myWindow().open();
            }

            public var myData:Array = new Array('The Eiffel Tower','Paris','John Doe');
        ]]>
    </fx:Script>
    <s:Button x="10" y="10" width="240" label="open a sub-window" click="openWin();"/>
</s:WindowedApplication>

myWindow.mxml

myWindow.mxml

    <?xml version="1.0" encoding="utf-8"?>
<mx:Window name="myWindow"
           title="myWindow"
           xmlns:mx="http://www.adobe.com/2006/mxml"
           layout="absolute"
           width="640" height="360">
    <mx:Script>
        <![CDATA[

        ]]>
    </mx:Script>
    <mx:Label id="comment" x="10" y="10" text=""/>
    <mx:Label id="location" x="10" y="30" text=""/>
    <mx:Label id="author" x="10" y="50" text=""/>
</mx:Window>

我意识到这可能是一个非常简单的问题，但我已经在网上搜索，阅读和观看随机AIR科目教程了几天，但没有找到它。的，看起来像傻瓜的危险，现在是值得的，我想在我的第一个应用程序！

I realize this might be a very easy question but I have searched the web, read and watched tutorials on random AIR subjects for a few days and couldn't find it. The risk of looking like a fool is worth it now, I want to get on with my first app!

推荐答案

您可以添加一个属性到你的窗口类，并从应用程序传递数据。

You could add an attribute to your window class, and pass the data from the application.

使用属性和setter函数：

With an attribute and a setter function :

myWindow.mxml：

myWindow.mxml :

    <![CDATA[
        private var _data : Array;

        public function set data(data : Array) : void {
             this._data = data;
        }

    ]]>

主要

    <![CDATA[
        public function openWin():void {
            var w : myWindow = new myWindow();
            w.data = myData;
            w.open();
        }

        public var myData:Array = new Array('The Eiffel Tower',
                                            'Paris','John Doe');
    ]]>

您也可以做到这一点通过添加一个构造函数的参数到你的窗口，但你必须写在ActionScript的窗口组件。

You could also do it by adding a constructor parameter to your window, but you will have to write your Window component in ActionScript.

。（另外：你可能想使用mywindow的为您的组件，而不是为mywindow的名字，但是这只是conventionnal挑剔）

(Also : you might want to use MyWindow for the name of your component instead of myWindow, but that's just conventionnal nitpicking).

另外，请注意，有一个单变量Application.application，都可以访问应用中的所有类;不过，我不知道这是否适用于所以WindowedApplication，并且无论哪种方式，它是不推荐的方法。

Also, note that there is a singleton variable Application.application that is accessible to all classes in an Application ; however I don't know if this applies to a WindowedApplication, and either way it is not the recommended approach.

这篇关于在一个子窗口如何使用数据从主窗口？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！