Question

我需要掌握数组和XML数据，但我无法理解如何将xml数据转换为有用的数据。我希望这些论坛可以提供一些见解。

我使用以下代码加载我的XML：

//set values for XML data file
private var XML_URL:String = "http://www.mysite.com/media/locXML.xml";
private var locXML:XML = new XML();

private function getXMLdata():void
{
    var locXMLURL:URLRequest = new URLRequest(XML_URL);
    var locXMLLoader:URLLoader = new URLLoader(locXMLURL);
    locXMLLoader.addEventListener("complete", xmlLoaded);

    function xmlLoaded(event:Event):void
    {
        locXML = XML(locXMLLoader.data);
        trace("Data loaded. " + locXML);
    }
}

我正在尝试将以下代码放入由该XML数据填充的数组中。你到处都看到'[]'我需要的数字与locXML文件的数字记录相匹配......

    for each (var point[]:XML in locXML.location)
    {
        pointMarker] = new PointMarker();
        pointMarker[].buttonMode = pointMarker[].useHandCursor = true;
        var image[]:Loader = new Loader();
        image[].load(image[]Req, context);
        image[].x = -iconHeight/2;
        image[].y = -iconWidth/2;
        if (pointMarker[]_motion == true)
        {
            var iconShimmer[]:MovieClip = new IconShimmer() as MovieClip;
            iconShimmer[].x = image[].x;
            iconShimmer[].y = image[].y;
            pointMarker[].addChild(image[]);
            pointMarker[].addChild(iconShimmer[]);
            pointMarker[].pointName[] = point[].name;
            pointMarker[].name = imageBubbleFile[];
        }else{
            pointMarker[].addChild(image[]);
            pointMarker[].pointName[] = point[].name;
            pointMarker[].name = imageBubbleFile[];
        }
        pointMarker[].pointDesc[] = point[].description;
        _map.putMarker(new Location(point[].lat, point[].long), pointMarker[]);
        pointMarker[].addEventListener(MouseEvent.CLICK, pointMarker[]_Click);
        pointMarker[].addEventListener(MouseEvent.ROLL_OVER, pointMarker[]_RO);
        pointMarker[].mouseChildren=false;
    }       
}
}

这是XML文件的一小段：

<?xml version="1.0" encoding="utf-8"?>
<root>
<!--~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~-->
<location ID="maplogo">
<name>mapLogo</name>
<lat>31.3731712263342</lat>
<long>-94.08871702323849</long>
<iconFile>town.jpg</iconFile>
<imageFile>type1.swf</imageFile>
<motion>false</motion>
</location>
<!--~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~-->
<location ID="bigstarsupermarket">
<name>Big Star Supermarket</name>
<lat>31.5664202</lat>
<long>-93.4904959</long>
<iconFile>bigStar.jpg</iconFile>
<imageFile>type1.swf</imageFile>
<motion>false</motion>
</location>
<!--~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~-->
</root>

如果不占用2000行代码，我怎么能这样做呢？我很难在每个'[]'括号中编码一个数字，但这变得非常费力......？

EDIT ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~编辑我将它更改为在解析xml期间循环的位置。但是每种格式化[“icon”+ XMLpCounter]

都会产生错误

    public function parseLocXML(nodeName:String, lat:Number, 
         long:Number, iconFile:String, 
         imageFile:String, motion:String):void

    {   
        if (XMLpCounter==0)
        {
        //addMarkers();
        //trace(arguments);
        //trace("--- drawMap ---");
        //trace(arguments.join("\r"));
        XMLpCounter++;
        } else {
        XMLpCounter++;

        //----------------------------------------------------------------------------------------
        var this.["icon"+XMLpCounter]:Loader = new Loader();
        var this.["iconFileLink"+XMLpCounter]:String = mediaLoc + locXML.location.iconFile[XMLpCounter];
        var this.["iconFile"+XMLpCounter+"Req"]:URLRequest = new URLRequest(iconFileLink[XMLpCounter]);
        ["imageFileLink"+XMLpCounter] = mediaLoc + locXML.location.imageFile[XMLpCounter];
        ["imageFile"+XMLpCounter+"Req"] = new URLRequest(imageFileLink[XMLpCounter]);
        ["locPointMarker"+XMLpCounter] = new PointMarker();
        ["locPointMarker"+XMLpCounter].buttonMode = ["locPointMarker"+XMLpCounter].useHandCursor = true;

        ["icon"+XMLpCounter].load(["iconFile"+XMLpCounter+"Req"], context);
        ["icon"+XMLpCounter].x = -iconHeight/2;
        ["icon"+XMLpCounter].y = -iconWidth/2;

and so on
}

错误~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~ ERRORS

var ["icon" + XMLpCounter]:Loader = new Loader();//1084: Syntax error: expecting identifier before left bracket. & 1084: Syntax error: expecting identifier before right bracket.
//var iconFileLink1:String;
//var iconFile1Req:URLRequest;
//var imageFileLink1:String;
//var imageFile1Req:URLRequest;
//obtain from XML the icon for map
var ["iconFileLink"+XMLpCounter]:String = mediaLoc + locXML.location.iconFile[XMLpCounter];//1084: Syntax error: expecting identifier before left bracket. & 1084: Syntax error: expecting identifier before right bracket.
var ["iconFile"+XMLpCounter+"Req"]:URLRequest = new URLRequest(iconFileLink[XMLpCounter]);//1084: Syntax error: expecting identifier before plus. & 1084: Syntax error: expecting identifier before left bracket.
//obtain from XML the ad for bubble
["imageFileLink"+XMLpCounter] = mediaLoc + locXML.location.imageFile[XMLpCounter]; //1084: Syntax error: expecting identifier before assign.
["imageFile"+XMLpCounter+"Req"] = new URLRequest(imageFileLink[XMLpCounter]);//1084: Syntax error: expecting identifier before assign.
["locPointMarker"+XMLpCounter] = new PointMarker();//1084: Syntax error: expecting identifier before assign.
["locPointMarker"+XMLpCounter].buttonMode = ["locPointMarker"+XMLpCounter].useHandCursor = true;//1084: Syntax error: expecting identifier before dot.

["icon"+XMLpCounter].load(["iconFile"+XMLpCounter+"Req"], context);//1084: Syntax error: expecting identifier before dot.
["icon"+XMLpCounter].x = -iconHeight/2;//1084: Syntax error: expecting identifier before dot.
["icon"+XMLpCounter].y = -iconWidth/2;//1084: Syntax error: expecting identifier before dot.

EDIT ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~编辑~~~~ 除了两个问题，现在一切似乎都在起作用。在代码的最后一位，它为每个标记添加了事件监听器;当循环到达以下代码行时，它会抛出一个错误（如下面的代码所示）：

dict["locPointMarker"+i.toString()].addEventListener(MouseEvent.CLICK, ["locPointMarker"+ i.toString()+"_Click"]);
dict["locPointMarker"+i.toString()].addEventListener(MouseEvent.ROLL_OVER, ["locPointMarker"+i.toString()+"_RO"]);

我也尝试过以下代码：

dict["locPointMarker"+i.toString()].addEventListener(MouseEvent.CLICK, ["locPointMarker_Click"+ i.toString()]);
dict["locPointMarker"+i.toString()].addEventListener(MouseEvent.ROLL_OVER, ["locPointMarker_RO"+i.toString()]);

错误＃1034：类型强制失败：无法将[] @ 1488bac1转换为函数。

我想要做的是省略最后两行，然后在最后的循环中添加事件侦听器。也许通过发送他们的论据或某事......这可能吗？

Answer 1

我建议创建一个表示从0开始的计数器的变量，并在for循环中每次运行时递增它。然后，您可以使用计数器来处理数组中的条目。

查看您的代码，我甚至不确定您是否真的需要解决数组条目。我认为最好在for循环中创建一个PointMarker实例，然后在循环中每次运行结束时将其推送到数组上。

var pointMarkers:Array = [];

for each (var locationXML:XML in locXML.location) {
    var pointMarker:PointMarker = new PointMarker();
    pointMarker.buttonMode = pointMarker.useHandCursor = true;
    ...
    pointMarkers.push(pointMarker);
}

Answer 2

我认为这会奏效。在for循环之前创建迭代器var。

var i:number = 0;

你的for循环中的

调用你的变量

["pointMarker" + i]. // on first pass this should evaluate to pointMarker0, on second pointMarker1, etc.

在循环结束时添加

i++;

编辑2/22：好的，所以我才意识到字典是继续这个领导的方式：

private function init():void{
    var dict:Object = new Object();
    var i:Number = 0;
    var e:Number = 100;
    for(i;i<e;i++){
        dict["blah" + i.toString()] = i;
    }
    trace(dict["blah3"]); //returns 3
    trace(dict.blah23);//returns 23
}

Answer 3

我无法理解如何将xml数据转换为有用的数据。

使用动作脚本中的e4x XML数据非常有用。我有完整的应用程序运行XML变量，取自与您的XML页面非常相似的XML页面。查询XML的速度和能力使其易于使用。

我认为您应该坚持使用XML格式的数据，如果您需要数据中的特定内容，只需查询它们即可。此示例将图标图像的源更改为town.jpg

iconImage.source =  locXML.location.(@ID=="maplogo").iconFile;

FLEX：XML到数据阵列？

3 个答案: