as3 create xml basic question

Question

While I'm having no problems parsing incoming XML, I can't seem to construct valid outgoing xml. This is my code:

   myXML =
   <INFO>
   <imgname>testimage.jpg</imgname>
   <totalCols>{totalCols}</totalCols>
   </INFO>;

//The XML up to this point traces the desired output, it's when I try to append with the for loop that problems arise:

for (var i:Number = 0; i<totalCols; i++)
   {
    var tags:XML = 
    <tags>
    <tagx> {tagDisplay[i].x} </tagx>
    <tagy> {tagDisplay[i].y} </tagy>
    <tagtext> {tagDisplay[i].tagTxt.text} </tagtext>
    </tags>;

    myXML.appendChild(tags);
   }

The desired output I want is:

    <INFO>
    <imgname>testimage.jpg</imgname>
    <totalCols>7</totalCols>
//for loop kicks in here:
    <tags>
    <tagx>100</tagx>
    <tagy>100</tagy>
    <tagtext>tag1</tagtext>
    </tags>
    <tags>
    <tagx>120</tagx>
    <tagy>120</tagy>
    <tagtext>tag2</tagtext>
    </tags>
...etc for the total number in the for loop.
    </INFO>

Really simple I know, but my code just doesn't seem to work with the for loop included! Any advice much appreciated.

Bah, people are telling you to ditch this and use string manipulation. Ignore them. Your way is better. — Chris Burt-Brown
– Chris Burt-Brown, Commented Nov 15, 2010 at 10:19

grapefrukt · Accepted Answer · 2010-11-15 08:33:06Z

1

I can't see any reason to use substitution here, simple assignments are nice and clear:

for (var i:Number = 0; i < totalCols; i++) {
    var tags:XML = <tags></tags>;
    tags.tagx    = tagDisplay[i].x;
    tags.tagy    = tagDisplay[i].y;
    tags.tagtext = tagDisplay[i].tagTxt.text;
    myXML.appendChild(tags);
}

answered Nov 15, 2010 at 8:33

grapefrukt

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Comments

Chris Burt-Brown · Accepted Answer · 2010-11-15 10:11:04Z

1

I just added this code to an empty FLA:

var totalCols:Number = 4;
var tagDisplay:Array = [
    {x:0, y:0, tagTxt:{text:"stuff"}},
    {x:0, y:0, tagTxt:{text:"stuff"}},
    {x:0, y:0, tagTxt:{text:"stuff"}},
    {x:0, y:0, tagTxt:{text:"stuff"}}
];

var myXML:XML =
   <INFO>
   <imgname>testimage.jpg</imgname>
   <totalCols>{totalCols}</totalCols>
   </INFO>;

for (var i:Number = 0; i<totalCols; i++)
{
    var tags:XML = 
    <tags>
    <tagx> {tagDisplay[i].x} </tagx>
    <tagy> {tagDisplay[i].y} </tagy>
    <tagtext> {tagDisplay[i].tagTxt.text} </tagtext>
    </tags>;

    myXML.appendChild(tags);
}

trace(myXML);

The response I got was:

<INFO>
  <imgname>testimage.jpg</imgname>
  <totalCols>4</totalCols>
  <tags>
    <tagx>0</tagx>
    <tagy>0</tagy>
    <tagtext>stuff</tagtext>
  </tags>
  <tags>
    <tagx>0</tagx>
    <tagy>0</tagy>
    <tagtext>stuff</tagtext>
  </tags>
  <tags>
    <tagx>0</tagx>
    <tagy>0</tagy>
    <tagtext>stuff</tagtext>
  </tags>
  <tags>
    <tagx>0</tagx>
    <tagy>0</tagy>
    <tagtext>stuff</tagtext>
  </tags>
</INFO>

I think that is exactly what you want, isn't it? I haven't changed your code other than some sample input.

answered Nov 15, 2010 at 10:11

Chris Burt-Brown

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1 Comment

daxski Over a year ago

Well that's interesting... it probably means my variables aren't being initialised properly. I'll have a look cheers.

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